Saison des inondations, mois par mois dans le monde

Le fleuve envahit les rues la plupart des années.

Cette page est un avertissement, pas une recommandation. Saison des inondations concerne 112 destinations sur SeasonMap ; les mois ci-dessous sont ceux où la période de risque est ouverte — la plupart des semaines passent sans histoire, et le score affiché à côté de chaque lieu reste le score climatique habituel, risque compris.

← Toutes les saisonsLe calendrier du monde

Quand ça a lieu

Nombre de destinations concernées (saison des inondations) ce mois-là. Les périodes bougent un peu chaque année.

Saison des inondations en janvier

  1. Fujaïrah 🇦🇪 Émirats arabes unisWinter rain and wadi floods · 1 déc. – 31 mars (en général)This is the wettest corner of the Emirates, and a day of rain on the Hajar mountains sends water down the wadis fast enough to cut the roads.92
  2. Dahab 🇪🇬 ÉgypteSinai flash floods · 15 oct. – 15 mars (en général)Rare and violent: a storm over the mountains sends water down the wadis and across the coast road, cutting the runs to Nuweiba and St Catherine for a day.91
  3. La Mecque 🇸🇦 Arabie saouditeWinter flash floods · 1 nov. – 31 janv. (en général)The valley takes most of its rain in a handful of storms and the runoff comes off bare rock into the streets, shutting underpasses and approach roads for a few hours.90
  4. Aqaba 🇯🇴 JordanieWadi flash-flood season · 15 oct. – 31 mars (en général)Rain over the mountains behind town runs off bare rock and crosses the roads out to Wadi Rum and the Dead Sea.90
  5. Cafayate 🇦🇷 ArgentineSummer storm road closures · 15 déc. – 15 mars (en général)The valley's rain arrives as short violent summer storms and the Quebrada de las Conchas road towards Salta closes for rockfall and washed-out crossings.87
  6. Trujillo 🇵🇪 PérouRain floods from the ravines · 15 janv. – 15 avr. (en général)In most years the coast stays dry, but warm-sea years bring heavy rains that activate the dry ravines above the city.85
  7. Alexandrie 🇪🇬 ÉgypteWinter storms off the sea · 15 nov. – 15 mars (en général)Named storms come in off the Mediterranean every few weeks and the drains give up before the rain does: flooded underpasses, closed corniche lanes, a day written off.84
  8. Mer Morte 🇯🇴 JordanieWadi flash-flood season · 1 nov. – 31 marsRain falling on the highlands drains into the canyons that come down to the shore, and the valley road and every side wadi close at short notice.84
  9. Ica 🇵🇪 PérouHighland rains and huaicos · 15 janv. – 31 mars (en général)Rain in the Andes sends mudflows and river surges down into the desert valleys; in bad years the Ica, Ocucaje and Nazca areas flood and the Panamericana Sur is cut for hours.81
  10. Pétra 🇯🇴 JordanieFlash-flood closures · 1 nov. – 31 marsThe Siq is a drain for a wide catchment, and after heavy rain on the plateau the authority evacuates the site with little warning.79
  11. Wadi Rum 🇯🇴 JordanieFlash floods in the wadis · 1 nov. – 31 mars (en général)Rain on the plateau runs off bare rock and fills the wadis within minutes, and the desert tracks and the road in can both be cut for a day.76
  12. Gaborone 🇧🇼 BotswanaSummer flash floods · 1 déc. – 15 mars (en général)Intense summer storms can overwhelm the city's drainage; the February 2025 floods killed people in Gaborone and closed roads, bridges and schools.75
  13. Bagdad 🇮🇶 IrakStreet flooding in the first rains · 25 oct. – 31 janv. (en général)The season's first heavy downpours regularly overwhelm Baghdad's drainage and pumping stations: underpasses and main roads flood, traffic seizes up and some districts sit in water for a day or more.74
  14. Harare 🇿🇼 ZimbabweFlash floods in the heavy rains · 1 déc. – 15 mars (en général)Afternoon storms at the height of the rains overwhelm drains in the city centre and low-lying suburbs such as Mbare, Glen View and Budiriro.70
  15. Franz Josef 🇳🇿 Nouvelle-ZélandeHighway closures in heavy rain · 1 janv. – 31 déc.There is one road in and one road out, and a big West Coast rain event closes it north or south of the village a few times a year.69
  16. Coimbra 🇵🇹 PortugalMondego river floods · 15 déc. – 15 mars (en général)In wet winters the Mondego tops its banks: the riverside cafes of Parque Verde and the grounds of Santa Clara-a-Velha go under, and in the worst storms low-lying Baixa streets and schools close.66
  17. Brazzaville 🇨🇬 République du CongoCongo River flood season · 15 nov. – 31 janv. (en général)The river runs highest at the end of the year while storms overwhelm the drains, so low-lying districts such as Talangai and Mfilou can flood and roads get cut.65
  18. São Paulo 🇧🇷 BrésilSummer storms and flooding · 1 déc. – 31 mars (en général)Late-afternoon storms most days through the southern summer, and the ones that stall put the Tiete and the marginais under water and the traffic at a standstill for hours.63
  19. Salta 🇦🇷 ArgentineSummer rain closes the mountain roads · 15 déc. – 15 mars (en général)Storms in the southern summer send debris over the Cuesta del Obispo and the road down to Cafayate, and either can shut for a day.62
  20. Lusaka 🇿🇲 ZambieRainy-season flooding · 1 déc. – 31 mars (en général)Poor drainage and dense informal settlements mean heavy rains regularly submerge roads and low-lying suburbs each rainy season.60
  21. Machupicchu Pueblo 🇵🇪 PérouLandslides on the rail line · 1 janv. – 31 mars (en général)The Urubamba runs high through the wet months and a huaico takes out a stretch of track most years, usually towards Hidroelectrica.60
  22. Venise 🇮🇹 ItalieAcqua alta season · 1 oct. – 15 janv. (en général)High water comes with the autumn tides.59
  23. Parc national de Congaree 🇺🇸 États-UnisFloodwater on the boardwalk · 1 déc. – 30 avr. (en général)The floodplain takes water about ten times a year, most often in the wet half, and a rise puts the backcountry trails and parts of the boardwalk underwater.59
  24. Majuro 🇲🇭 Îles MarshallKing tides wash the road · 15 déc. – 15 mars (en général)The atoll is a few hundred metres wide in places with the lagoon on one side and the ocean on the other.57
  25. Tarawa 🇰🇮 KiribatiKing tides over the causeways · 15 janv. – 20 mars (en général)South Tarawa is a thin line of islets joined by causeways, and the highest tides of the year put seawater across the road and into the wells.55

…et 15 de plus en janvier.

Au programme dans le monde en janvier →

Saison des inondations en février

  1. Aqaba 🇯🇴 JordanieWadi flash-flood season · 15 oct. – 31 mars (en général)Rain over the mountains behind town runs off bare rock and crosses the roads out to Wadi Rum and the Dead Sea.96
  2. Dahab 🇪🇬 ÉgypteSinai flash floods · 15 oct. – 15 mars (en général)Rare and violent: a storm over the mountains sends water down the wadis and across the coast road, cutting the runs to Nuweiba and St Catherine for a day.95
  3. Mer Morte 🇯🇴 JordanieWadi flash-flood season · 1 nov. – 31 marsRain falling on the highlands drains into the canyons that come down to the shore, and the valley road and every side wadi close at short notice.90
  4. Alexandrie 🇪🇬 ÉgypteWinter storms off the sea · 15 nov. – 15 mars (en général)Named storms come in off the Mediterranean every few weeks and the drains give up before the rain does: flooded underpasses, closed corniche lanes, a day written off.89
  5. Cafayate 🇦🇷 ArgentineSummer storm road closures · 15 déc. – 15 mars (en général)The valley's rain arrives as short violent summer storms and the Quebrada de las Conchas road towards Salta closes for rockfall and washed-out crossings.89
  6. Fujaïrah 🇦🇪 Émirats arabes unisWinter rain and wadi floods · 1 déc. – 31 mars (en général)This is the wettest corner of the Emirates, and a day of rain on the Hajar mountains sends water down the wadis fast enough to cut the roads.89
  7. Pétra 🇯🇴 JordanieFlash-flood closures · 1 nov. – 31 marsThe Siq is a drain for a wide catchment, and after heavy rain on the plateau the authority evacuates the site with little warning.82
  8. Trujillo 🇵🇪 PérouRain floods from the ravines · 15 janv. – 15 avr. (en général)In most years the coast stays dry, but warm-sea years bring heavy rains that activate the dry ravines above the city.80
  9. Ica 🇵🇪 PérouHighland rains and huaicos · 15 janv. – 31 mars (en général)Rain in the Andes sends mudflows and river surges down into the desert valleys; in bad years the Ica, Ocucaje and Nazca areas flood and the Panamericana Sur is cut for hours.79
  10. Wadi Rum 🇯🇴 JordanieFlash floods in the wadis · 1 nov. – 31 mars (en général)Rain on the plateau runs off bare rock and fills the wadis within minutes, and the desert tracks and the road in can both be cut for a day.79
  11. Harare 🇿🇼 ZimbabweFlash floods in the heavy rains · 1 déc. – 15 mars (en général)Afternoon storms at the height of the rains overwhelm drains in the city centre and low-lying suburbs such as Mbare, Glen View and Budiriro.78
  12. Bujumbura-Mairie 🇧🇮 BurundiLong rains and flooding · 1 févr. – 31 mai (en général)The long rains swell the rivers off the hills behind the city and, in wet years, Lake Tanganyika itself, flooding low-lying lakeside districts and the beach strip.75
  13. Coimbra 🇵🇹 PortugalMondego river floods · 15 déc. – 15 mars (en général)In wet winters the Mondego tops its banks: the riverside cafes of Parque Verde and the grounds of Santa Clara-a-Velha go under, and in the worst storms low-lying Baixa streets and schools close.74
  14. Gaborone 🇧🇼 BotswanaSummer flash floods · 1 déc. – 15 mars (en général)Intense summer storms can overwhelm the city's drainage; the February 2025 floods killed people in Gaborone and closed roads, bridges and schools.73
  15. Franz Josef 🇳🇿 Nouvelle-ZélandeHighway closures in heavy rain · 1 janv. – 31 déc.There is one road in and one road out, and a big West Coast rain event closes it north or south of the village a few times a year.71
  16. Lusaka 🇿🇲 ZambieRainy-season flooding · 1 déc. – 31 mars (en général)Poor drainage and dense informal settlements mean heavy rains regularly submerge roads and low-lying suburbs each rainy season.70
  17. São Paulo 🇧🇷 BrésilSummer storms and flooding · 1 déc. – 31 mars (en général)Late-afternoon storms most days through the southern summer, and the ones that stall put the Tiete and the marginais under water and the traffic at a standstill for hours.68
  18. Salta 🇦🇷 ArgentineSummer rain closes the mountain roads · 15 déc. – 15 mars (en général)Storms in the southern summer send debris over the Cuesta del Obispo and the road down to Cafayate, and either can shut for a day.67
  19. Parc national de Congaree 🇺🇸 États-UnisFloodwater on the boardwalk · 1 déc. – 30 avr. (en général)The floodplain takes water about ten times a year, most often in the wet half, and a rise puts the backcountry trails and parts of the boardwalk underwater.66
  20. Brazzaville 🇨🇬 République du CongoStorm flooding and gullies · 15 févr. – 15 mai (en général)The heaviest downpours of the long rainy season swamp low streets and cut erosion gullies through the northern districts; drainage is undersized, so a single storm can leave roads impassable.63
  21. Tarawa 🇰🇮 KiribatiKing tides over the causeways · 15 janv. – 20 mars (en général)South Tarawa is a thin line of islets joined by causeways, and the highest tides of the year put seawater across the road and into the wells.62
  22. Oxford 🇬🇧 Royaume-UniPort Meadow under water · 1 déc. – 28 févr. (en général)The Thames spreads across Port Meadow most winters and the towpath north of Walton Well goes under.61
  23. Majuro 🇲🇭 Îles MarshallKing tides wash the road · 15 déc. – 15 mars (en général)The atoll is a few hundred metres wide in places with the lagoon on one side and the ocean on the other.60
  24. York 🇬🇧 Royaume-UniThe Ouse comes up · 1 nov. – 28 févr. (en général)King's Staith and the riverside pubs flood most winters — the pubs have tide marks on the walls and mop out afterwards.60
  25. Machupicchu Pueblo 🇵🇪 PérouLandslides on the rail line · 1 janv. – 31 mars (en général)The Urubamba runs high through the wet months and a huaico takes out a stretch of track most years, usually towards Hidroelectrica.59

…et 15 de plus en février.

Au programme dans le monde en février →

Saison des inondations en mars

  1. Mer Morte 🇯🇴 JordanieWadi flash-flood season · 1 nov. – 31 marsRain falling on the highlands drains into the canyons that come down to the shore, and the valley road and every side wadi close at short notice.94
  2. Alexandrie 🇪🇬 ÉgypteWinter storms off the sea · 15 nov. – 15 mars (en général)Named storms come in off the Mediterranean every few weeks and the drains give up before the rain does: flooded underpasses, closed corniche lanes, a day written off.93
  3. Dahab 🇪🇬 ÉgypteSinai flash floods · 15 oct. – 15 mars (en général)Rare and violent: a storm over the mountains sends water down the wadis and across the coast road, cutting the runs to Nuweiba and St Catherine for a day.93
  4. Cafayate 🇦🇷 ArgentineSummer storm road closures · 15 déc. – 15 mars (en général)The valley's rain arrives as short violent summer storms and the Quebrada de las Conchas road towards Salta closes for rockfall and washed-out crossings.92
  5. Pétra 🇯🇴 JordanieFlash-flood closures · 1 nov. – 31 marsThe Siq is a drain for a wide catchment, and after heavy rain on the plateau the authority evacuates the site with little warning.88
  6. Aqaba 🇯🇴 JordanieWadi flash-flood season · 15 oct. – 31 mars (en général)Rain over the mountains behind town runs off bare rock and crosses the roads out to Wadi Rum and the Dead Sea.88
  7. Harare 🇿🇼 ZimbabweFlash floods in the heavy rains · 1 déc. – 15 mars (en général)Afternoon storms at the height of the rains overwhelm drains in the city centre and low-lying suburbs such as Mbare, Glen View and Budiriro.85
  8. Wadi Rum 🇯🇴 JordanieFlash floods in the wadis · 1 nov. – 31 mars (en général)Rain on the plateau runs off bare rock and fills the wadis within minutes, and the desert tracks and the road in can both be cut for a day.85
  9. Gaborone 🇧🇼 BotswanaSummer flash floods · 1 déc. – 15 mars (en général)Intense summer storms can overwhelm the city's drainage; the February 2025 floods killed people in Gaborone and closed roads, bridges and schools.84
  10. Fujaïrah 🇦🇪 Émirats arabes unisWinter rain and wadi floods · 1 déc. – 31 mars (en général)This is the wettest corner of the Emirates, and a day of rain on the Hajar mountains sends water down the wadis fast enough to cut the roads.81
  11. Ica 🇵🇪 PérouHighland rains and huaicos · 15 janv. – 31 mars (en général)Rain in the Andes sends mudflows and river surges down into the desert valleys; in bad years the Ica, Ocucaje and Nazca areas flood and the Panamericana Sur is cut for hours.80
  12. Lusaka 🇿🇲 ZambieRainy-season flooding · 1 déc. – 31 mars (en général)Poor drainage and dense informal settlements mean heavy rains regularly submerge roads and low-lying suburbs each rainy season.78
  13. Trujillo 🇵🇪 PérouRain floods from the ravines · 15 janv. – 15 avr. (en général)In most years the coast stays dry, but warm-sea years bring heavy rains that activate the dry ravines above the city.77
  14. Coimbra 🇵🇹 PortugalMondego river floods · 15 déc. – 15 mars (en général)In wet winters the Mondego tops its banks: the riverside cafes of Parque Verde and the grounds of Santa Clara-a-Velha go under, and in the worst storms low-lying Baixa streets and schools close.75
  15. Budapest 🇭🇺 HongrieDanube high water · 1 mars – 30 avr. (en général)Snowmelt upstream pushes the river over the lower quays most springs.74
  16. Parc national de Congaree 🇺🇸 États-UnisFloodwater on the boardwalk · 1 déc. – 30 avr. (en général)The floodplain takes water about ten times a year, most often in the wet half, and a rise puts the backcountry trails and parts of the boardwalk underwater.72
  17. Bujumbura-Mairie 🇧🇮 BurundiLong rains and flooding · 1 févr. – 31 mai (en général)The long rains swell the rivers off the hills behind the city and, in wet years, Lake Tanganyika itself, flooding low-lying lakeside districts and the beach strip.72
  18. São Paulo 🇧🇷 BrésilSummer storms and flooding · 1 déc. – 31 mars (en général)Late-afternoon storms most days through the southern summer, and the ones that stall put the Tiete and the marginais under water and the traffic at a standstill for hours.70
  19. Dresde 🇩🇪 AllemagneElbe high water · 15 févr. – 15 juin (en général)Snowmelt out of the Czech mountains pushes the Elbe up most springs; the riverside paths, the beer gardens and the ferry landings go under first, and the city has flood gauges marked on the old town wall.68
  20. Salta 🇦🇷 ArgentineSummer rain closes the mountain roads · 15 déc. – 15 mars (en général)Storms in the southern summer send debris over the Cuesta del Obispo and the road down to Cafayate, and either can shut for a day.68
  21. Uluru/Ayers Rock 🇦🇺 AustralieSummer storms and waterfalls · 1 déc. – 15 mars (en général)Thunderstorms come off the desert in the hot months and the rock runs with waterfalls for a few hours, which is the sight nobody plans for.67
  22. Cologne 🇩🇪 AllemagneRhine high water · 1 déc. – 31 mars (en général)Winter rain and Alpine melt push the Rhine over the riverside paths most years and occasionally into the old town cellars.67
  23. Wrocław 🇵🇱 PologneOdra high water · 1 mars – 31 juil. (en général)The city is built across a dozen islands and channels, and it has been overwhelmed twice in living memory — 1997 and again in 2024.67
  24. Franz Josef 🇳🇿 Nouvelle-ZélandeHighway closures in heavy rain · 1 janv. – 31 déc.There is one road in and one road out, and a big West Coast rain event closes it north or south of the village a few times a year.67
  25. Cincinnati 🇺🇸 États-UnisOhio River flood season · 1 févr. – 15 avr. (en général)Late winter rain on frozen ground puts the river over its banks most years, and the low riverfront roads and Sawyer Point paths go under first.66

…et 14 de plus en mars.

Au programme dans le monde en mars →

Saison des inondations en avril

  1. Budapest 🇭🇺 HongrieDanube high water · 1 mars – 30 avr. (en général)Snowmelt upstream pushes the river over the lower quays most springs.88
  2. Trujillo 🇵🇪 PérouRain floods from the ravines · 15 janv. – 15 avr. (en général)In most years the coast stays dry, but warm-sea years bring heavy rains that activate the dry ravines above the city.87
  3. Saint-Louis 🇺🇸 États-UnisSpring river flooding · 1 avr. – 30 juin (en général)Snowmelt and spring rain up two river systems meet here, and the Arch grounds, Laclede's Landing and the riverboat docks go under in the bad years.80
  4. Dresde 🇩🇪 AllemagneElbe high water · 15 févr. – 15 juin (en général)Snowmelt out of the Czech mountains pushes the Elbe up most springs; the riverside paths, the beer gardens and the ferry landings go under first, and the city has flood gauges marked on the old town wall.78
  5. Wrocław 🇵🇱 PologneOdra high water · 1 mars – 31 juil. (en général)The city is built across a dozen islands and channels, and it has been overwhelmed twice in living memory — 1997 and again in 2024.77
  6. Parc national de Congaree 🇺🇸 États-UnisFloodwater on the boardwalk · 1 déc. – 30 avr. (en général)The floodplain takes water about ten times a year, most often in the wet half, and a rise puts the backcountry trails and parts of the boardwalk underwater.76
  7. Cincinnati 🇺🇸 États-UnisOhio River flood season · 1 févr. – 15 avr. (en général)Late winter rain on frozen ground puts the river over its banks most years, and the low riverfront roads and Sawyer Point paths go under first.76
  8. Parc national de Gateway Arch 🇺🇸 États-UnisMississippi spring flood · 15 mars – 30 juin (en général)Snowmelt and spring rain from half a continent arrive here, and the cobblestone levee below the Arch goes under most years — sometimes the riverfront path with it.69
  9. Winnipeg 🇨🇦 CanadaRed River flood season · 1 avr. – 10 mai (en général)Snowmelt on a flat, north-flowing river backs water up across the valley most springs, and the floodway around the city was dug for exactly this.68
  10. Lomé 🇹🇬 TogoLong-rains street flooding · 1 avr. – 30 juin (en général)The long rains turn streets in Be, Nyekonakpoe, Agoe and other districts into muddy torrents after each downpour because the drains are clogged.66
  11. Cotonou 🇧🇯 BéninRainy-season flooding · 15 avr. – 31 juil. (en général)The long rains swamp Cotonou's low-lying districts and neighbouring Abomey-Calavi after heavy downpours, when drains overflow and whole streets sit under water for days.66
  12. Bujumbura-Mairie 🇧🇮 BurundiLong rains and flooding · 1 févr. – 31 mai (en général)The long rains swell the rivers off the hills behind the city and, in wet years, Lake Tanganyika itself, flooding low-lying lakeside districts and the beach strip.65
  13. Paraty 🇧🇷 BrésilSea into the streets · 1 janv. – 31 déc.The colonial centre was laid below the spring-tide line on purpose, so around the full and new moons the sea comes up through the seawall openings and drains back out, taking the day's dirt with it.65
  14. Puerto Iguazú 🇦🇷 ArgentineGarganta walkway shut in flood · 1 nov. – 30 avr. (en général)Summer rain upriver can put the Iguazu over the catwalk to the Devil's Throat balcony, and the circuit shuts until the flow drops.64
  15. Foz do Iguaçu 🇧🇷 BrésilDevil's Throat walkway shut · 1 nov. – 30 avr. (en général)When the Iguacu runs above the safe limit the catwalk out to the Devil's Throat closes on both sides, sometimes for days.64
  16. Franz Josef 🇳🇿 Nouvelle-ZélandeHighway closures in heavy rain · 1 janv. – 31 déc.There is one road in and one road out, and a big West Coast rain event closes it north or south of the village a few times a year.60
  17. Brazzaville 🇨🇬 République du CongoStorm flooding and gullies · 15 févr. – 15 mai (en général)The heaviest downpours of the long rainy season swamp low streets and cut erosion gullies through the northern districts; drainage is undersized, so a single storm can leave roads impassable.58
  18. Belém 🇧🇷 BrésilRain and spring-tide flooding · 15 janv. – 30 avr. (en général)At the height of the Amazonian winter, heavy afternoon rain meeting the highest tides of the year, above all around March, floods low streets near the canals and the waterfront; check tide tables before planning a day around the old town.46
  19. Guayaquil 🇪🇨 ÉquateurRainy season street flooding · 1 janv. – 30 avr. (en général)The coastal winter brings heavy downpours that flood low-lying streets, worst when they coincide with high tides on the Estero Salado.45

Au programme dans le monde en avril →

Saison des inondations en mai

  1. Saint-Louis 🇺🇸 États-UnisSpring river flooding · 1 avr. – 30 juin (en général)Snowmelt and spring rain up two river systems meet here, and the Arch grounds, Laclede's Landing and the riverboat docks go under in the bad years.87
  2. Dresde 🇩🇪 AllemagneElbe high water · 15 févr. – 15 juin (en général)Snowmelt out of the Czech mountains pushes the Elbe up most springs; the riverside paths, the beer gardens and the ferry landings go under first, and the city has flood gauges marked on the old town wall.85
  3. Wrocław 🇵🇱 PologneOdra high water · 1 mars – 31 juil. (en général)The city is built across a dozen islands and channels, and it has been overwhelmed twice in living memory — 1997 and again in 2024.85
  4. Parc national des Guadalupe Mountains 🇺🇸 États-UnisMonsoon storms and flash floods · 15 mai – 30 sept. (en général)The wet months bring heavy afternoon thunderstorms and flash flooding in the canyons, which is also what breaks the heat of the day.81
  5. Winnipeg 🇨🇦 CanadaRed River flood season · 1 avr. – 10 mai (en général)Snowmelt on a flat, north-flowing river backs water up across the valley most springs, and the floodway around the city was dug for exactly this.80
  6. Paraty 🇧🇷 BrésilSea into the streets · 1 janv. – 31 déc.The colonial centre was laid below the spring-tide line on purpose, so around the full and new moons the sea comes up through the seawall openings and drains back out, taking the day's dirt with it.77
  7. Bujumbura-Mairie 🇧🇮 BurundiLong rains and flooding · 1 févr. – 31 mai (en général)The long rains swell the rivers off the hills behind the city and, in wet years, Lake Tanganyika itself, flooding low-lying lakeside districts and the beach strip.75
  8. Parc national de Gateway Arch 🇺🇸 États-UnisMississippi spring flood · 15 mars – 30 juin (en général)Snowmelt and spring rain from half a continent arrive here, and the cobblestone levee below the Arch goes under most years — sometimes the riverfront path with it.74
  9. San Antonio 🇺🇸 États-UnisFlash flood season · 1 mai – 15 juin (en général)The Hill Country upstream turns rain into wall-of-water floods faster than almost anywhere in the country, and late spring is the worst of it.70
  10. Djouba 🇸🇸 Soudan du SudRainy-season road cuts · 15 mai – 31 oct. (en général)Juba's own streets stay passable, but the dirt roads beyond turn to deep mud and floodwater, cutting off towns for weeks.68
  11. Brazzaville 🇨🇬 République du CongoStorm flooding and gullies · 15 févr. – 15 mai (en général)The heaviest downpours of the long rainy season swamp low streets and cut erosion gullies through the northern districts; drainage is undersized, so a single storm can leave roads impassable.67
  12. Lomé 🇹🇬 TogoLong-rains street flooding · 1 avr. – 30 juin (en général)The long rains turn streets in Be, Nyekonakpoe, Agoe and other districts into muddy torrents after each downpour because the drains are clogged.63
  13. Cotonou 🇧🇯 BéninRainy-season flooding · 15 avr. – 31 juil. (en général)The long rains swamp Cotonou's low-lying districts and neighbouring Abomey-Calavi after heavy downpours, when drains overflow and whole streets sit under water for days.61
  14. Lagos 🇳🇬 NigeriaFlash-flood season · 1 mai – 20 juil. (en général)Downpours in the main rains flood Victoria Island, Lekki, Ikeja and other districts within hours, turning roads into gridlock; allow hours extra for the airport and avoid driving during a storm.57
  15. Cape Coast 🇬🇭 GhanaMajor rainy season floods · 15 mai – 15 juil. (en général)The heaviest rains of the year fall in May and June; Cape Coast was the worst-hit town in the Central Region floods of June 2026, with drowned roads and collapsed buildings.56
  16. Abidjan 🇨🇮 Côte d'IvoireRainy-season flash floods · 15 mai – 15 juil. (en général)The long rains peak around June, and cloudbursts regularly flood low-lying districts, cut roads and trigger deadly landslides on hillside neighbourhoods such as Attecoube and Yopougon.53
  17. Guilin 🇨🇳 ChineLi River flood closures · 15 mai – 31 juil. (en général)Heavy rain in the flood season, especially around the Dragon Boat Festival and when typhoon remnants arrive, pushes the Li River towards warning level; the maritime authority then halts every cruise and bamboo raft, sometimes for days.53
  18. Vang Vieng 🇱🇦 LaosFast, muddy Nam Song · 15 mai – 15 oct. (en général)In the rains the river runs high, brown and fast; tubing and kayaking get genuinely risky after heavy downpours.52
  19. Franz Josef 🇳🇿 Nouvelle-ZélandeHighway closures in heavy rain · 1 janv. – 31 déc.There is one road in and one road out, and a big West Coast rain event closes it north or south of the village a few times a year.50
  20. Barranquilla 🇨🇴 ColombieArroyos in the streets · 1 mai – 15 nov. (en général)The city drains its downpours down the roads, and within minutes certain streets carry a current that will move a car.49
  21. Georgetown 🇬🇾 GuyanaFlooding in the city · 1 mai – 31 juil. (en général)Georgetown lies below sea level and drains through canals and kokers that only open at low tide.47
  22. Sylhet 🇧🇩 BangladeshFlash-flood season · 15 mai – 30 sept. (en général)The Surma and Kushiyara rivers regularly burst their banks between May and September: the 2022 flood submerged most of Sylhet and neighbouring Sunamganj district, shut the airport and railway station, and displaced close to half a million people.46

Au programme dans le monde en mai →

Saison des inondations en juin

  1. Dresde 🇩🇪 AllemagneElbe high water · 15 févr. – 15 juin (en général)Snowmelt out of the Czech mountains pushes the Elbe up most springs; the riverside paths, the beer gardens and the ferry landings go under first, and the city has flood gauges marked on the old town wall.91
  2. Wrocław 🇵🇱 PologneOdra high water · 1 mars – 31 juil. (en général)The city is built across a dozen islands and channels, and it has been overwhelmed twice in living memory — 1997 and again in 2024.91
  3. Paraty 🇧🇷 BrésilSea into the streets · 1 janv. – 31 déc.The colonial centre was laid below the spring-tide line on purpose, so around the full and new moons the sea comes up through the seawall openings and drains back out, taking the day's dirt with it.82
  4. Parc national des Guadalupe Mountains 🇺🇸 États-UnisMonsoon storms and flash floods · 15 mai – 30 sept. (en général)The wet months bring heavy afternoon thunderstorms and flash flooding in the canyons, which is also what breaks the heat of the day.78
  5. Saint-Louis 🇺🇸 États-UnisSpring river flooding · 1 avr. – 30 juin (en général)Snowmelt and spring rain up two river systems meet here, and the Arch grounds, Laclede's Landing and the riverboat docks go under in the bad years.76
  6. Parc national de Saguaro 🇺🇸 États-UnisMonsoon season · 15 juin – 30 sept.From the middle of June to the end of September the afternoons build storms over the mountains, and the washes and canyons flash-flood fast enough to catch people out.71
  7. Djouba 🇸🇸 Soudan du SudRainy-season road cuts · 15 mai – 31 oct. (en général)Juba's own streets stay passable, but the dirt roads beyond turn to deep mud and floodwater, cutting off towns for weeks.71
  8. Addis-Abeba 🇪🇹 ÉthiopieKiremt rains flood the roads · 20 juin – 15 sept. (en général)The long rains arrive in late June and the first downpours hit drains clogged after months of dust, so streets flood and traffic locks up for hours.70
  9. Parc national de Gateway Arch 🇺🇸 États-UnisMississippi spring flood · 15 mars – 30 juin (en général)Snowmelt and spring rain from half a continent arrive here, and the cobblestone levee below the Arch goes under most years — sometimes the riverfront path with it.66
  10. San Antonio 🇺🇸 États-UnisFlash flood season · 1 mai – 15 juin (en général)The Hill Country upstream turns rain into wall-of-water floods faster than almost anywhere in the country, and late spring is the worst of it.61
  11. Lomé 🇹🇬 TogoLong-rains street flooding · 1 avr. – 30 juin (en général)The long rains turn streets in Be, Nyekonakpoe, Agoe and other districts into muddy torrents after each downpour because the drains are clogged.59
  12. Punakha 🇧🇹 BhoutanGlacial flood risk on the rivers · 1 juin – 15 oct. (en général)The Mo Chhu and Pho Chhu, which meet at the dzong, are fed by glacial lakes upstream that have burst before: floods in 1957, 1960, 1994 and 1996 each damaged Punakha Dzong, the worst killing 23 people.59
  13. Cape Coast 🇬🇭 GhanaMajor rainy season floods · 15 mai – 15 juil. (en général)The heaviest rains of the year fall in May and June; Cape Coast was the worst-hit town in the Central Region floods of June 2026, with drowned roads and collapsed buildings.57
  14. Cotonou 🇧🇯 BéninRainy-season flooding · 15 avr. – 31 juil. (en général)The long rains swamp Cotonou's low-lying districts and neighbouring Abomey-Calavi after heavy downpours, when drains overflow and whole streets sit under water for days.56
  15. Chongqing 🇨🇳 ChineYangtze flood season · 15 juin – 5 sept. (en général)The summer rains upstream push the Yangtze and Jialing up their banks most years, and in a bad one the lower levels of Hongya Dong and the riverside walks go under for a week.55
  16. Manille 🇵🇭 PhilippinesHabagat and street flooding · 1 juin – 15 oct. (en général)The southwest monsoon puts water across España and the low parts of Manila several times a season, and the city calls off work and school when it does.53
  17. Franz Josef 🇳🇿 Nouvelle-ZélandeHighway closures in heavy rain · 1 janv. – 31 déc.There is one road in and one road out, and a big West Coast rain event closes it north or south of the village a few times a year.53
  18. Monrovia 🇱🇷 LiberiaFlooded streets in the rains · 1 juin – 30 sept. (en général)Heavy downpours overwhelm the drains in low-lying neighbourhoods, turning main roads into rivers and stalling traffic for hours.51
  19. Abidjan 🇨🇮 Côte d'IvoireRainy-season flash floods · 15 mai – 15 juil. (en général)The long rains peak around June, and cloudbursts regularly flood low-lying districts, cut roads and trigger deadly landslides on hillside neighbourhoods such as Attecoube and Yopougon.50
  20. Barranquilla 🇨🇴 ColombieArroyos in the streets · 1 mai – 15 nov. (en général)The city drains its downpours down the roads, and within minutes certain streets carry a current that will move a car.50
  21. Lagos 🇳🇬 NigeriaFlash-flood season · 1 mai – 20 juil. (en général)Downpours in the main rains flood Victoria Island, Lekki, Ikeja and other districts within hours, turning roads into gridlock; allow hours extra for the airport and avoid driving during a storm.49
  22. Conakry 🇬🇳 GuinéeRainy season floods · 20 juin – 15 sept. (en général)Conakry is one of Africa's wettest capitals, and July and August downpours flood low neighbourhoods such as Matoto and Sonfonia, cutting roads and causing deaths most years.48
  23. Georgetown 🇬🇾 GuyanaFlooding in the city · 1 mai – 31 juil. (en général)Georgetown lies below sea level and drains through canals and kokers that only open at low tide.48
  24. Guilin 🇨🇳 ChineLi River flood closures · 15 mai – 31 juil. (en général)Heavy rain in the flood season, especially around the Dragon Boat Festival and when typhoon remnants arrive, pushes the Li River towards warning level; the maritime authority then halts every cruise and bamboo raft, sometimes for days.43
  25. Vang Vieng 🇱🇦 LaosFast, muddy Nam Song · 15 mai – 15 oct. (en général)In the rains the river runs high, brown and fast; tubing and kayaking get genuinely risky after heavy downpours.42

…et 2 de plus en juin.

Au programme dans le monde en juin →

Saison des inondations en juillet

  1. Wrocław 🇵🇱 PologneOdra high water · 1 mars – 31 juil. (en général)The city is built across a dozen islands and channels, and it has been overwhelmed twice in living memory — 1997 and again in 2024.88
  2. Paraty 🇧🇷 BrésilSea into the streets · 1 janv. – 31 déc.The colonial centre was laid below the spring-tide line on purpose, so around the full and new moons the sea comes up through the seawall openings and drains back out, taking the day's dirt with it.87
  3. Parc national des Guadalupe Mountains 🇺🇸 États-UnisMonsoon storms and flash floods · 15 mai – 30 sept. (en général)The wet months bring heavy afternoon thunderstorms and flash flooding in the canyons, which is also what breaks the heat of the day.77
  4. Cape Coast 🇬🇭 GhanaMajor rainy season floods · 15 mai – 15 juil. (en général)The heaviest rains of the year fall in May and June; Cape Coast was the worst-hit town in the Central Region floods of June 2026, with drowned roads and collapsed buildings.74
  5. Parc national de Capitol Reef 🇺🇸 États-UnisMonsoon flash floods · 1 juil. – 20 sept. (en général)The slot canyons off the Scenic Drive fill from storms that break out of sight, and the dirt roads in the Waterpocket district turn to grease.72
  6. Parc national de Big Bend 🇺🇸 États-UnisMonsoon flash floods · 1 juil. – 30 sept. (en général)Afternoon storms put water down the arroyos with no warning and cut the unpaved roads; Old Maverick Road and the Santa Elena approach have been closed by flood damage for long stretches.72
  7. Djouba 🇸🇸 Soudan du SudRainy-season road cuts · 15 mai – 31 oct. (en général)Juba's own streets stay passable, but the dirt roads beyond turn to deep mud and floodwater, cutting off towns for weeks.72
  8. Parc national de Zion 🇺🇸 États-UnisMonsoon flash floods · 1 juil. – 20 sept. (en général)Late-summer storms over the plateau put water into slot canyons under blue sky downstream.71
  9. Abidjan 🇨🇮 Côte d'IvoireRainy-season flash floods · 15 mai – 15 juil. (en général)The long rains peak around June, and cloudbursts regularly flood low-lying districts, cut roads and trigger deadly landslides on hillside neighbourhoods such as Attecoube and Yopougon.71
  10. Monterrey 🇲🇽 MexiqueTropical rain and flooding · 1 juil. – 15 oct. (en général)Gulf storms that cross the coast dump their rain on the Sierra Madre behind the city, and the Santa Catarina riverbed fills within hours.70
  11. Saint-Louis 🇸🇳 SénégalSenegal River flood season · 15 juil. – 31 oct. (en général)Rain far upstream swells the Senegal River from July to October, and in high years it spills into low-lying mainland neighbourhoods and the northern tip of the island.70
  12. Parc national de la vallée de la Mort 🇺🇸 États-UnisMonsoon flash floods · 15 juil. – 30 sept. (en général)Late summer storms tear out the unpaved canyon roads most years, and some stay shut for months afterwards.68
  13. Parc national des grottes de Carlsbad 🇺🇸 États-UnisMonsoon flash floods · 1 juil. – 20 sept. (en général)Afternoon storms come off the Guadalupe escarpment and put water across Walnut Canyon Desert Drive and the road up from Whites City.68
  14. Parc national de Saguaro 🇺🇸 États-UnisMonsoon season · 15 juin – 30 sept.From the middle of June to the end of September the afternoons build storms over the mountains, and the washes and canyons flash-flood fast enough to catch people out.67
  15. Cotonou 🇧🇯 BéninRainy-season flooding · 15 avr. – 31 juil. (en général)The long rains swamp Cotonou's low-lying districts and neighbouring Abomey-Calavi after heavy downpours, when drains overflow and whole streets sit under water for days.66
  16. Niamey 🇳🇪 NigerNiger river flooding · 15 juil. – 30 sept. (en général)Storm runoff and then the river rise put whole neighbourhoods on the right bank under water most years.64
  17. Addis-Abeba 🇪🇹 ÉthiopieKiremt rains flood the roads · 20 juin – 15 sept. (en général)The long rains arrive in late June and the first downpours hit drains clogged after months of dust, so streets flood and traffic locks up for hours.61
  18. Parc national des Canyonlands 🇺🇸 États-UnisMonsoon flash floods · 1 juil. – 20 sept. (en général)Afternoon storms fill the canyons from rain that fell miles upstream, and the dirt roads into the Needles and the Maze turn to impassable clay within minutes.60
  19. Lagos 🇳🇬 NigeriaFlash-flood season · 1 mai – 20 juil. (en général)Downpours in the main rains flood Victoria Island, Lekki, Ikeja and other districts within hours, turning roads into gridlock; allow hours extra for the airport and avoid driving during a storm.59
  20. Ensemble monumental de Hampi 🇮🇳 IndeTungabhadra dam releases · 15 juil. – 30 sept. (en général)When the upstream dam fills, its gates open and the river rises fast: riverside ruins such as Purandara Mandapa and the Chakratirtha ghat go under, coracle crossings stop and people on the far bank can be cut off.59
  21. Parc national des Arches 🇺🇸 États-UnisMonsoon flash floods · 15 juil. – 15 sept. (en général)Late summer storms send water down slots and washes that were dry an hour earlier, and the rain does not have to be overhead.59
  22. Abuja 🇳🇬 NigeriaFlash floods · 1 juil. – 30 sept. (en général)The heaviest downpours of the rainy season regularly flood parts of the city, including Wuse 2, Lokogoma and Gwagwalada.59
  23. Barranquilla 🇨🇴 ColombieArroyos in the streets · 1 mai – 15 nov. (en général)The city drains its downpours down the roads, and within minutes certain streets carry a current that will move a car.59
  24. Karachi 🇵🇰 PakistanUrban flooding · 1 juil. – 31 août (en général)A single heavy spell puts the underpasses and half the main arteries under water and takes the grid down with them.56
  25. Georgetown 🇬🇾 GuyanaFlooding in the city · 1 mai – 31 juil. (en général)Georgetown lies below sea level and drains through canals and kokers that only open at low tide.55

…et 19 de plus en juillet.

Au programme dans le monde en juillet →

Saison des inondations en août

  1. Paraty 🇧🇷 BrésilSea into the streets · 1 janv. – 31 déc.The colonial centre was laid below the spring-tide line on purpose, so around the full and new moons the sea comes up through the seawall openings and drains back out, taking the day's dirt with it.81
  2. Parc national des Guadalupe Mountains 🇺🇸 États-UnisMonsoon storms and flash floods · 15 mai – 30 sept. (en général)The wet months bring heavy afternoon thunderstorms and flash flooding in the canyons, which is also what breaks the heat of the day.79
  3. Parc national de Capitol Reef 🇺🇸 États-UnisMonsoon flash floods · 1 juil. – 20 sept. (en général)The slot canyons off the Scenic Drive fill from storms that break out of sight, and the dirt roads in the Waterpocket district turn to grease.77
  4. Parc national de Zion 🇺🇸 États-UnisMonsoon flash floods · 1 juil. – 20 sept. (en général)Late-summer storms over the plateau put water into slot canyons under blue sky downstream.75
  5. Parc national de Big Bend 🇺🇸 États-UnisMonsoon flash floods · 1 juil. – 30 sept. (en général)Afternoon storms put water down the arroyos with no warning and cut the unpaved roads; Old Maverick Road and the Santa Elena approach have been closed by flood damage for long stretches.73
  6. Monterrey 🇲🇽 MexiqueTropical rain and flooding · 1 juil. – 15 oct. (en général)Gulf storms that cross the coast dump their rain on the Sierra Madre behind the city, and the Santa Catarina riverbed fills within hours.72
  7. Parc national de la vallée de la Mort 🇺🇸 États-UnisMonsoon flash floods · 15 juil. – 30 sept. (en général)Late summer storms tear out the unpaved canyon roads most years, and some stay shut for months afterwards.71
  8. Djouba 🇸🇸 Soudan du SudRainy-season road cuts · 15 mai – 31 oct. (en général)Juba's own streets stay passable, but the dirt roads beyond turn to deep mud and floodwater, cutting off towns for weeks.71
  9. Parc national de Saguaro 🇺🇸 États-UnisMonsoon season · 15 juin – 30 sept.From the middle of June to the end of September the afternoons build storms over the mountains, and the washes and canyons flash-flood fast enough to catch people out.70
  10. Parc national des Canyonlands 🇺🇸 États-UnisMonsoon flash floods · 1 juil. – 20 sept. (en général)Afternoon storms fill the canyons from rain that fell miles upstream, and the dirt roads into the Needles and the Maze turn to impassable clay within minutes.69
  11. Nouakchott 🇲🇷 MauritanieFlooded districts after storms · 1 août – 30 sept. (en général)Parts of the city lie below sea level with almost no storm drains, so the few heavy downpours of the short rainy season leave Sebkha and El Mina under standing water for days, cutting roads.69
  12. Parc national des Arches 🇺🇸 États-UnisMonsoon flash floods · 15 juil. – 15 sept. (en général)Late summer storms send water down slots and washes that were dry an hour earlier, and the rain does not have to be overhead.68
  13. Parc national des grottes de Carlsbad 🇺🇸 États-UnisMonsoon flash floods · 1 juil. – 20 sept. (en général)Afternoon storms come off the Guadalupe escarpment and put water across Walnut Canyon Desert Drive and the road up from Whites City.67
  14. Ensemble monumental de Hampi 🇮🇳 IndeTungabhadra dam releases · 15 juil. – 30 sept. (en général)When the upstream dam fills, its gates open and the river rises fast: riverside ruins such as Purandara Mandapa and the Chakratirtha ghat go under, coracle crossings stop and people on the far bank can be cut off.65
  15. Saint-Louis 🇸🇳 SénégalSenegal River flood season · 15 juil. – 31 oct. (en général)Rain far upstream swells the Senegal River from July to October, and in high years it spills into low-lying mainland neighbourhoods and the northern tip of the island.64
  16. Addis-Abeba 🇪🇹 ÉthiopieKiremt rains flood the roads · 20 juin – 15 sept. (en général)The long rains arrive in late June and the first downpours hit drains clogged after months of dust, so streets flood and traffic locks up for hours.63
  17. Niamey 🇳🇪 NigerNiger river flooding · 15 juil. – 30 sept. (en général)Storm runoff and then the river rise put whole neighbourhoods on the right bank under water most years.63
  18. Moab 🇺🇸 États-UnisMonsoon flash floods · 10 juil. – 15 sept. (en général)Storms that break fifty miles upstream fill the slot canyons here with no warning, and the road into Canyonlands' Needles has been cut by debris more than once.60
  19. Karachi 🇵🇰 PakistanUrban flooding · 1 juil. – 31 août (en général)A single heavy spell puts the underpasses and half the main arteries under water and takes the grid down with them.60
  20. Islamabad 🇵🇰 PakistanNullah flooding · 1 juil. – 31 août (en général)A cell parking over the Margallas fills the storm channels through the sectors within the hour and takes the Expressway underpasses with them.56
  21. Punakha 🇧🇹 BhoutanGlacial flood risk on the rivers · 1 juin – 15 oct. (en général)The Mo Chhu and Pho Chhu, which meet at the dzong, are fed by glacial lakes upstream that have burst before: floods in 1957, 1960, 1994 and 1996 each damaged Punakha Dzong, the worst killing 23 people.55
  22. Abuja 🇳🇬 NigeriaFlash floods · 1 juil. – 30 sept. (en général)The heaviest downpours of the rainy season regularly flood parts of the city, including Wuse 2, Lokogoma and Gwagwalada.53
  23. Monrovia 🇱🇷 LiberiaFlooded streets in the rains · 1 juin – 30 sept. (en général)Heavy downpours overwhelm the drains in low-lying neighbourhoods, turning main roads into rivers and stalling traffic for hours.53
  24. Barranquilla 🇨🇴 ColombieArroyos in the streets · 1 mai – 15 nov. (en général)The city drains its downpours down the roads, and within minutes certain streets carry a current that will move a car.53
  25. Franz Josef 🇳🇿 Nouvelle-ZélandeHighway closures in heavy rain · 1 janv. – 31 déc.There is one road in and one road out, and a big West Coast rain event closes it north or south of the village a few times a year.52

…et 14 de plus en août.

Au programme dans le monde en août →

Saison des inondations en septembre

  1. Avignon 🇫🇷 FranceAutumn flash floods · 10 sept. – 30 nov. (en général)Mediterranean downpours can drop months of rain in a few hours on the Vaucluse and Gard in autumn.89
  2. Malaga 🇪🇸 EspagneAutumn storms and flash floods · 1 sept. – 30 nov. (en général)A cut-off low over a warm Mediterranean can drop a season's rain in a few hours, and the dry riverbeds inland are what carry it into the towns.85
  3. Gênes 🇮🇹 ItalieAutumn flash floods · 15 sept. – 30 nov.Warm sea and steep hills behind a narrow city produce autumn storms that drop a month of rain in hours.85
  4. Parc national des Guadalupe Mountains 🇺🇸 États-UnisMonsoon storms and flash floods · 15 mai – 30 sept. (en général)The wet months bring heavy afternoon thunderstorms and flash flooding in the canyons, which is also what breaks the heat of the day.83
  5. Hambourg 🇩🇪 AllemagneStorm surge season · 15 sept. – 31 marsThe city counts its storm tide season from mid-September to the end of March.82
  6. Parc national de Capitol Reef 🇺🇸 États-UnisMonsoon flash floods · 1 juil. – 20 sept. (en général)The slot canyons off the Scenic Drive fill from storms that break out of sight, and the dirt roads in the Waterpocket district turn to grease.82
  7. Valence 🇪🇸 EspagneGota fria and DANA storms · 1 sept. – 15 nov.Autumn is when a cut-off low over a warm Mediterranean can drop a season's rain on the coastal plain in hours.80
  8. Parc national de Zion 🇺🇸 États-UnisMonsoon flash floods · 1 juil. – 20 sept. (en général)Late-summer storms over the plateau put water into slot canyons under blue sky downstream.80
  9. Moab 🇺🇸 États-UnisMonsoon flash floods · 10 juil. – 15 sept. (en général)Storms that break fifty miles upstream fill the slot canyons here with no warning, and the road into Canyonlands' Needles has been cut by debris more than once.80
  10. Parc national de la vallée de la Mort 🇺🇸 États-UnisMonsoon flash floods · 15 juil. – 30 sept. (en général)Late summer storms tear out the unpaved canyon roads most years, and some stay shut for months afterwards.79
  11. Alicante 🇪🇸 EspagneGota fria storms · 1 sept. – 15 nov. (en général)Autumn on this coast delivers its rain in a day or two rather than in showers, and the ramblas that are dry all year are the reason those days close roads.79
  12. Benidorm 🇪🇸 EspagneGota fria storms · 1 sept. – 15 nov. (en général)Autumn rain on this coast arrives as one or two violent days rather than as drizzle, and those days flood the dry ravines and shut the coast road.79
  13. Parc national des Arches 🇺🇸 États-UnisMonsoon flash floods · 15 juil. – 15 sept. (en général)Late summer storms send water down slots and washes that were dry an hour earlier, and the rain does not have to be overhead.78
  14. Parc national des Canyonlands 🇺🇸 États-UnisMonsoon flash floods · 1 juil. – 20 sept. (en général)Afternoon storms fill the canyons from rain that fell miles upstream, and the dirt roads into the Needles and the Maze turn to impassable clay within minutes.78
  15. Parc national de Big Bend 🇺🇸 États-UnisMonsoon flash floods · 1 juil. – 30 sept. (en général)Afternoon storms put water down the arroyos with no warning and cut the unpaved roads; Old Maverick Road and the Santa Elena approach have been closed by flood damage for long stretches.77
  16. Parc national des grottes de Carlsbad 🇺🇸 États-UnisMonsoon flash floods · 1 juil. – 20 sept. (en général)Afternoon storms come off the Guadalupe escarpment and put water across Walnut Canyon Desert Drive and the road up from Whites City.76
  17. Parc national de Saguaro 🇺🇸 États-UnisMonsoon season · 15 juin – 30 sept.From the middle of June to the end of September the afternoons build storms over the mountains, and the washes and canyons flash-flood fast enough to catch people out.75
  18. Paraty 🇧🇷 BrésilSea into the streets · 1 janv. – 31 déc.The colonial centre was laid below the spring-tide line on purpose, so around the full and new moons the sea comes up through the seawall openings and drains back out, taking the day's dirt with it.75
  19. Monterrey 🇲🇽 MexiqueTropical rain and flooding · 1 juil. – 15 oct. (en général)Gulf storms that cross the coast dump their rain on the Sierra Madre behind the city, and the Santa Catarina riverbed fills within hours.73
  20. Djouba 🇸🇸 Soudan du SudRainy-season road cuts · 15 mai – 31 oct. (en général)Juba's own streets stay passable, but the dirt roads beyond turn to deep mud and floodwater, cutting off towns for weeks.72
  21. Charleston 🇺🇸 États-UnisKing tide flooding · 1 sept. – 15 nov. (en général)The highest autumn tides put salt water over the Battery and into the lower peninsula streets on clear days, no storm required.69
  22. Ensemble monumental de Hampi 🇮🇳 IndeTungabhadra dam releases · 15 juil. – 30 sept. (en général)When the upstream dam fills, its gates open and the river rises fast: riverside ruins such as Purandara Mandapa and the Chakratirtha ghat go under, coracle crossings stop and people on the far bank can be cut off.68
  23. Addis-Abeba 🇪🇹 ÉthiopieKiremt rains flood the roads · 20 juin – 15 sept. (en général)The long rains arrive in late June and the first downpours hit drains clogged after months of dust, so streets flood and traffic locks up for hours.67
  24. Niamey 🇳🇪 NigerNiger river flooding · 15 juil. – 30 sept. (en général)Storm runoff and then the river rise put whole neighbourhoods on the right bank under water most years.66
  25. Yaoundé 🇨🇲 CamerounFlash-flood season · 1 sept. – 31 oct. (en général)The heaviest downpours of the year overwhelm blocked drains along the Mfoundi; streets in the centre around Avenue Kennedy and the Mfoundi market, and districts like Melen and Ekounou, flood and traffic stalls.65

…et 27 de plus en septembre.

Au programme dans le monde en septembre →

Saison des inondations en octobre

  1. Malaga 🇪🇸 EspagneAutumn storms and flash floods · 1 sept. – 30 nov. (en général)A cut-off low over a warm Mediterranean can drop a season's rain in a few hours, and the dry riverbeds inland are what carry it into the towns.89
  2. Alicante 🇪🇸 EspagneGota fria storms · 1 sept. – 15 nov. (en général)Autumn on this coast delivers its rain in a day or two rather than in showers, and the ramblas that are dry all year are the reason those days close roads.89
  3. Benidorm 🇪🇸 EspagneGota fria storms · 1 sept. – 15 nov. (en général)Autumn rain on this coast arrives as one or two violent days rather than as drizzle, and those days flood the dry ravines and shut the coast road.89
  4. Valence 🇪🇸 EspagneGota fria and DANA storms · 1 sept. – 15 nov.Autumn is when a cut-off low over a warm Mediterranean can drop a season's rain on the coastal plain in hours.88
  5. Charleston 🇺🇸 États-UnisKing tide flooding · 1 sept. – 15 nov. (en général)The highest autumn tides put salt water over the Battery and into the lower peninsula streets on clear days, no storm required.85
  6. Monterrey 🇲🇽 MexiqueTropical rain and flooding · 1 juil. – 15 oct. (en général)Gulf storms that cross the coast dump their rain on the Sierra Madre behind the city, and the Santa Catarina riverbed fills within hours.84
  7. Avignon 🇫🇷 FranceAutumn flash floods · 10 sept. – 30 nov. (en général)Mediterranean downpours can drop months of rain in a few hours on the Vaucluse and Gard in autumn.81
  8. Venise 🇮🇹 ItalieAcqua alta season · 1 oct. – 15 janv. (en général)High water comes with the autumn tides.79
  9. Dahab 🇪🇬 ÉgypteSinai flash floods · 15 oct. – 15 mars (en général)Rare and violent: a storm over the mountains sends water down the wadis and across the coast road, cutting the runs to Nuweiba and St Catherine for a day.77
  10. Gênes 🇮🇹 ItalieAutumn flash floods · 15 sept. – 30 nov.Warm sea and steep hills behind a narrow city produce autumn storms that drop a month of rain in hours.76
  11. Côme 🇮🇹 ItalieLake floods the lakefront · 1 oct. – 15 déc. (en général)Autumn rain lifts the lake over the walls into Piazza Cavour most years, which is why the city has spent two decades building barriers.75
  12. Punakha 🇧🇹 BhoutanGlacial flood risk on the rivers · 1 juin – 15 oct. (en général)The Mo Chhu and Pho Chhu, which meet at the dzong, are fed by glacial lakes upstream that have burst before: floods in 1957, 1960, 1994 and 1996 each damaged Punakha Dzong, the worst killing 23 people.75
  13. Cinque Terre 🇮🇹 ItalieAutumn storm trail closures · 1 oct. – 30 nov. (en général)Autumn brings the downpours that flattened Vernazza and Monterosso in 2011.73
  14. Aqaba 🇯🇴 JordanieWadi flash-flood season · 15 oct. – 31 mars (en général)Rain over the mountains behind town runs off bare rock and crosses the roads out to Wadi Rum and the Dead Sea.72
  15. Hambourg 🇩🇪 AllemagneStorm surge season · 15 sept. – 31 marsThe city counts its storm tide season from mid-September to the end of March.69
  16. Bagdad 🇮🇶 IrakStreet flooding in the first rains · 25 oct. – 31 janv. (en général)The season's first heavy downpours regularly overwhelm Baghdad's drainage and pumping stations: underpasses and main roads flood, traffic seizes up and some districts sit in water for a day or more.69
  17. Djouba 🇸🇸 Soudan du SudRainy-season road cuts · 15 mai – 31 oct. (en général)Juba's own streets stay passable, but the dirt roads beyond turn to deep mud and floodwater, cutting off towns for weeks.69
  18. Miami 🇺🇸 États-UnisKing tide flooding · 1 sept. – 15 nov. (en général)The year's highest tides push seawater up through the storm drains on clear days, closing streets in Miami Beach and Brickell for a few hours around the new and full moons.63
  19. Vang Vieng 🇱🇦 LaosFast, muddy Nam Song · 15 mai – 15 oct. (en général)In the rains the river runs high, brown and fast; tubing and kayaking get genuinely risky after heavy downpours.63
  20. Bangui 🇨🇫 République centrafricaineUbangi River flood season · 1 oct. – 30 nov. (en général)The river peaks at the end of the rains and low-lying riverside districts of Bangui and Bimbo can flood; in 2019 it burst its banks in mid-October and tens of thousands in the city were affected.63
  21. Paraty 🇧🇷 BrésilSea into the streets · 1 janv. – 31 déc.The colonial centre was laid below the spring-tide line on purpose, so around the full and new moons the sea comes up through the seawall openings and drains back out, taking the day's dirt with it.63
  22. Saint-Louis 🇸🇳 SénégalSenegal River flood season · 15 juil. – 31 oct. (en général)Rain far upstream swells the Senegal River from July to October, and in high years it spills into low-lying mainland neighbourhoods and the northern tip of the island.63
  23. Cotonou 🇧🇯 BéninOueme river flood · 1 sept. – 31 oct. (en général)Later in the year the Oueme river spills into Lake Nokoue, flooding lakeside quarters such as Vossa, Fifadji and Dandji even when it is not raining in the city.60
  24. Yaoundé 🇨🇲 CamerounFlash-flood season · 1 sept. – 31 oct. (en général)The heaviest downpours of the year overwhelm blocked drains along the Mfoundi; streets in the centre around Avenue Kennedy and the Mfoundi market, and districts like Melen and Ekounou, flood and traffic stalls.59
  25. Ayutthaya 🇹🇭 ThaïlandeFlood season on the rivers · 1 sept. – 15 nov. (en général)Discharge from the Chao Phraya dam upstream backs into the low districts around the island most years, closing riverside roads and some outlying temples for days at a time.56

…et 9 de plus en octobre.

Au programme dans le monde en octobre →

Saison des inondations en novembre

  1. Alexandrie 🇪🇬 ÉgypteWinter storms off the sea · 15 nov. – 15 mars (en général)Named storms come in off the Mediterranean every few weeks and the drains give up before the rain does: flooded underpasses, closed corniche lanes, a day written off.92
  2. Pétra 🇯🇴 JordanieFlash-flood closures · 1 nov. – 31 marsThe Siq is a drain for a wide catchment, and after heavy rain on the plateau the authority evacuates the site with little warning.91
  3. Bagdad 🇮🇶 IrakStreet flooding in the first rains · 25 oct. – 31 janv. (en général)The season's first heavy downpours regularly overwhelm Baghdad's drainage and pumping stations: underpasses and main roads flood, traffic seizes up and some districts sit in water for a day or more.89
  4. Alicante 🇪🇸 EspagneGota fria storms · 1 sept. – 15 nov. (en général)Autumn on this coast delivers its rain in a day or two rather than in showers, and the ramblas that are dry all year are the reason those days close roads.89
  5. Malaga 🇪🇸 EspagneAutumn storms and flash floods · 1 sept. – 30 nov. (en général)A cut-off low over a warm Mediterranean can drop a season's rain in a few hours, and the dry riverbeds inland are what carry it into the towns.87
  6. Benidorm 🇪🇸 EspagneGota fria storms · 1 sept. – 15 nov. (en général)Autumn rain on this coast arrives as one or two violent days rather than as drizzle, and those days flood the dry ravines and shut the coast road.87
  7. Wadi Rum 🇯🇴 JordanieFlash floods in the wadis · 1 nov. – 31 mars (en général)Rain on the plateau runs off bare rock and fills the wadis within minutes, and the desert tracks and the road in can both be cut for a day.87
  8. Charleston 🇺🇸 États-UnisKing tide flooding · 1 sept. – 15 nov. (en général)The highest autumn tides put salt water over the Battery and into the lower peninsula streets on clear days, no storm required.86
  9. Dahab 🇪🇬 ÉgypteSinai flash floods · 15 oct. – 15 mars (en général)Rare and violent: a storm over the mountains sends water down the wadis and across the coast road, cutting the runs to Nuweiba and St Catherine for a day.86
  10. Mer Morte 🇯🇴 JordanieWadi flash-flood season · 1 nov. – 31 marsRain falling on the highlands drains into the canyons that come down to the shore, and the valley road and every side wadi close at short notice.86
  11. Valence 🇪🇸 EspagneGota fria and DANA storms · 1 sept. – 15 nov.Autumn is when a cut-off low over a warm Mediterranean can drop a season's rain on the coastal plain in hours.85
  12. Aqaba 🇯🇴 JordanieWadi flash-flood season · 15 oct. – 31 mars (en général)Rain over the mountains behind town runs off bare rock and crosses the roads out to Wadi Rum and the Dead Sea.83
  13. La Mecque 🇸🇦 Arabie saouditeWinter flash floods · 1 nov. – 31 janv. (en général)The valley takes most of its rain in a handful of storms and the runoff comes off bare rock into the streets, shutting underpasses and approach roads for a few hours.76
  14. Miami 🇺🇸 États-UnisKing tide flooding · 1 sept. – 15 nov. (en général)The year's highest tides push seawater up through the storm drains on clear days, closing streets in Miami Beach and Brickell for a few hours around the new and full moons.73
  15. Bangui 🇨🇫 République centrafricaineUbangi River flood season · 1 oct. – 30 nov. (en général)The river peaks at the end of the rains and low-lying riverside districts of Bangui and Bimbo can flood; in 2019 it burst its banks in mid-October and tens of thousands in the city were affected.71
  16. Ayutthaya 🇹🇭 ThaïlandeFlood season on the rivers · 1 sept. – 15 nov. (en général)Discharge from the Chao Phraya dam upstream backs into the low districts around the island most years, closing riverside roads and some outlying temples for days at a time.70
  17. Avignon 🇫🇷 FranceAutumn flash floods · 10 sept. – 30 nov. (en général)Mediterranean downpours can drop months of rain in a few hours on the Vaucluse and Gard in autumn.70
  18. Gênes 🇮🇹 ItalieAutumn flash floods · 15 sept. – 30 nov.Warm sea and steep hills behind a narrow city produce autumn storms that drop a month of rain in hours.67
  19. Cinque Terre 🇮🇹 ItalieAutumn storm trail closures · 1 oct. – 30 nov. (en général)Autumn brings the downpours that flattened Vernazza and Monterosso in 2011.67
  20. Bangkok 🇹🇭 ThaïlandeChao Phraya flood season · 15 sept. – 15 nov. (en général)The upstream runoff peaks after the monsoon has moved on, and a high tide on top of it puts the riverside walkways and the low sois behind them under water for a few days at a time.65
  21. Côme 🇮🇹 ItalieLake floods the lakefront · 1 oct. – 15 déc. (en général)Autumn rain lifts the lake over the walls into Piazza Cavour most years, which is why the city has spent two decades building barriers.65
  22. Venise 🇮🇹 ItalieAcqua alta season · 1 oct. – 15 janv. (en général)High water comes with the autumn tides.63
  23. Puerto Iguazú 🇦🇷 ArgentineGarganta walkway shut in flood · 1 nov. – 30 avr. (en général)Summer rain upriver can put the Iguazu over the catwalk to the Devil's Throat balcony, and the circuit shuts until the flow drops.62
  24. Foz do Iguaçu 🇧🇷 BrésilDevil's Throat walkway shut · 1 nov. – 30 avr. (en général)When the Iguacu runs above the safe limit the catwalk out to the Devil's Throat closes on both sides, sometimes for days.62
  25. Paraty 🇧🇷 BrésilSea into the streets · 1 janv. – 31 déc.The colonial centre was laid below the spring-tide line on purpose, so around the full and new moons the sea comes up through the seawall openings and drains back out, taking the day's dirt with it.62

…et 11 de plus en novembre.

Au programme dans le monde en novembre →

Saison des inondations en décembre

  1. Aqaba 🇯🇴 JordanieWadi flash-flood season · 15 oct. – 31 mars (en général)Rain over the mountains behind town runs off bare rock and crosses the roads out to Wadi Rum and the Dead Sea.93
  2. Cafayate 🇦🇷 ArgentineSummer storm road closures · 15 déc. – 15 mars (en général)The valley's rain arrives as short violent summer storms and the Quebrada de las Conchas road towards Salta closes for rockfall and washed-out crossings.91
  3. Dahab 🇪🇬 ÉgypteSinai flash floods · 15 oct. – 15 mars (en général)Rare and violent: a storm over the mountains sends water down the wadis and across the coast road, cutting the runs to Nuweiba and St Catherine for a day.90
  4. Alexandrie 🇪🇬 ÉgypteWinter storms off the sea · 15 nov. – 15 mars (en général)Named storms come in off the Mediterranean every few weeks and the drains give up before the rain does: flooded underpasses, closed corniche lanes, a day written off.88
  5. Mer Morte 🇯🇴 JordanieWadi flash-flood season · 1 nov. – 31 marsRain falling on the highlands drains into the canyons that come down to the shore, and the valley road and every side wadi close at short notice.85
  6. Fujaïrah 🇦🇪 Émirats arabes unisWinter rain and wadi floods · 1 déc. – 31 mars (en général)This is the wettest corner of the Emirates, and a day of rain on the Hajar mountains sends water down the wadis fast enough to cut the roads.85
  7. La Mecque 🇸🇦 Arabie saouditeWinter flash floods · 1 nov. – 31 janv. (en général)The valley takes most of its rain in a handful of storms and the runoff comes off bare rock into the streets, shutting underpasses and approach roads for a few hours.83
  8. Pétra 🇯🇴 JordanieFlash-flood closures · 1 nov. – 31 marsThe Siq is a drain for a wide catchment, and after heavy rain on the plateau the authority evacuates the site with little warning.82
  9. Wadi Rum 🇯🇴 JordanieFlash floods in the wadis · 1 nov. – 31 mars (en général)Rain on the plateau runs off bare rock and fills the wadis within minutes, and the desert tracks and the road in can both be cut for a day.78
  10. Harare 🇿🇼 ZimbabweFlash floods in the heavy rains · 1 déc. – 15 mars (en général)Afternoon storms at the height of the rains overwhelm drains in the city centre and low-lying suburbs such as Mbare, Glen View and Budiriro.77
  11. Bagdad 🇮🇶 IrakStreet flooding in the first rains · 25 oct. – 31 janv. (en général)The season's first heavy downpours regularly overwhelm Baghdad's drainage and pumping stations: underpasses and main roads flood, traffic seizes up and some districts sit in water for a day or more.77
  12. Gaborone 🇧🇼 BotswanaSummer flash floods · 1 déc. – 15 mars (en général)Intense summer storms can overwhelm the city's drainage; the February 2025 floods killed people in Gaborone and closed roads, bridges and schools.74
  13. São Paulo 🇧🇷 BrésilSummer storms and flooding · 1 déc. – 31 mars (en général)Late-afternoon storms most days through the southern summer, and the ones that stall put the Tiete and the marginais under water and the traffic at a standstill for hours.72
  14. Hô Chi Minh-Ville 🇻🇳 VietnamPeak tide flooding · 15 sept. – 15 déc. (en général)The year's highest tides push the river back into District 7, Nha Be and Binh Chanh, usually around the new and full moons.69
  15. Lusaka 🇿🇲 ZambieRainy-season flooding · 1 déc. – 31 mars (en général)Poor drainage and dense informal settlements mean heavy rains regularly submerge roads and low-lying suburbs each rainy season.69
  16. Coimbra 🇵🇹 PortugalMondego river floods · 15 déc. – 15 mars (en général)In wet winters the Mondego tops its banks: the riverside cafes of Parque Verde and the grounds of Santa Clara-a-Velha go under, and in the worst storms low-lying Baixa streets and schools close.67
  17. Salta 🇦🇷 ArgentineSummer rain closes the mountain roads · 15 déc. – 15 mars (en général)Storms in the southern summer send debris over the Cuesta del Obispo and the road down to Cafayate, and either can shut for a day.66
  18. Franz Josef 🇳🇿 Nouvelle-ZélandeHighway closures in heavy rain · 1 janv. – 31 déc.There is one road in and one road out, and a big West Coast rain event closes it north or south of the village a few times a year.64
  19. Côme 🇮🇹 ItalieLake floods the lakefront · 1 oct. – 15 déc. (en général)Autumn rain lifts the lake over the walls into Piazza Cavour most years, which is why the city has spent two decades building barriers.61
  20. Parc national de Phong Nha-Kẻ Bàng 🇻🇳 VietnamFlood closures in the caves · 1 sept. – 15 déc. (en général)The wet months put the Son and Chay rivers up through the show caves and the big expeditions stop entirely.61
  21. Uluru/Ayers Rock 🇦🇺 AustralieSummer storms and waterfalls · 1 déc. – 15 mars (en général)Thunderstorms come off the desert in the hot months and the rock runs with waterfalls for a few hours, which is the sight nobody plans for.59
  22. Parc national de Congaree 🇺🇸 États-UnisFloodwater on the boardwalk · 1 déc. – 30 avr. (en général)The floodplain takes water about ten times a year, most often in the wet half, and a rise puts the backcountry trails and parts of the boardwalk underwater.59
  23. Brazzaville 🇨🇬 République du CongoCongo River flood season · 15 nov. – 31 janv. (en général)The river runs highest at the end of the year while storms overwhelm the drains, so low-lying districts such as Talangai and Mfilou can flood and roads get cut.59
  24. Venise 🇮🇹 ItalieAcqua alta season · 1 oct. – 15 janv. (en général)High water comes with the autumn tides.58
  25. Huế—Ville 🇻🇳 VietnamFlood season · 25 sept. – 15 déc. (en général)Hue is the wettest city in the country and the Perfume River comes up into the low streets most years, sometimes for days.57

…et 12 de plus en décembre.

Au programme dans le monde en décembre →

Saison des inondations, mois par mois dans le monde | SeasonMap