Stagione delle alluvioni, mese per mese nel mondo

Quasi ogni anno il fiume entra nelle strade.

Questa è una pagina di avvertenza, non un consiglio. Stagione delle alluvioni riguarda 112 destinazioni su SeasonMap; i mesi qui sotto sono quelli in cui la finestra di rischio è aperta. La maggior parte delle settimane passa tranquilla, e il punteggio accanto a ogni luogo resta il normale punteggio climatico, rischi compresi.

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Quando è in corso

Numero di destinazioni in cui la stagione è in corso in quel mese (stagione delle alluvioni). I periodi si spostano un po' ogni anno.

Stagione delle alluvioni in gennaio

  1. Fujaira 🇦🇪 Emirati Arabi UnitiWinter rain and wadi floods · 1 dic – 31 mar (di solito)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 🇪🇬 EgittoSinai flash floods · 15 ott – 15 mar (di solito)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 Mecca 🇸🇦 Arabia SauditaWinter flash floods · 1 nov – 31 gen (di solito)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 🇯🇴 GiordaniaWadi flash-flood season · 15 ott – 31 mar (di solito)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 🇦🇷 ArgentinaSummer storm road closures · 15 dic – 15 mar (di solito)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 🇵🇪 PerùRain floods from the ravines · 15 gen – 15 apr (di solito)In most years the coast stays dry, but warm-sea years bring heavy rains that activate the dry ravines above the city.85
  7. Alessandria d'Egitto 🇪🇬 EgittoWinter storms off the sea · 15 nov – 15 mar (di solito)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. Mar Morto 🇯🇴 GiordaniaWadi flash-flood season · 1 nov – 31 marRain 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 🇵🇪 PerùHighland rains and huaicos · 15 gen – 31 mar (di solito)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. Petra 🇯🇴 GiordaniaFlash-flood closures · 1 nov – 31 marThe 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. Uadi Rum 🇯🇴 GiordaniaFlash floods in the wadis · 1 nov – 31 mar (di solito)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 dic – 15 mar (di solito)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. Baghdad 🇮🇶 IraqStreet flooding in the first rains · 25 ott – 31 gen (di solito)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 dic – 15 mar (di solito)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. Ghiacciaio Franz Josef 🇳🇿 Nuova ZelandaHighway closures in heavy rain · 1 gen – 31 dicThere 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 🇵🇹 PortogalloMondego river floods · 15 dic – 15 mar (di solito)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 🇨🇬 Repubblica del CongoCongo River flood season · 15 nov – 31 gen (di solito)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. San Paolo 🇧🇷 BrasileSummer storms and flooding · 1 dic – 31 mar (di solito)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 🇦🇷 ArgentinaSummer rain closes the mountain roads · 15 dic – 15 mar (di solito)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 🇿🇲 ZambiaRainy-season flooding · 1 dic – 31 mar (di solito)Poor drainage and dense informal settlements mean heavy rains regularly submerge roads and low-lying suburbs each rainy season.60
  21. Aguas Calientes 🇵🇪 PerùLandslides on the rail line · 1 gen – 31 mar (di solito)The Urubamba runs high through the wet months and a huaico takes out a stretch of track most years, usually towards Hidroelectrica.60
  22. Venezia 🇮🇹 ItaliaAcqua alta season · 1 ott – 15 gen (di solito)High water comes with the autumn tides.59
  23. Parco nazionale di Congaree 🇺🇸 Stati Uniti d'AmericaFloodwater on the boardwalk · 1 dic – 30 apr (di solito)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 🇲🇭 Isole MarshallKing tides wash the road · 15 dic – 15 mar (di solito)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 gen – 20 mar (di solito)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

…e altri 15 in gennaio.

Cosa c'è in programma nel mondo in gennaio →

Stagione delle alluvioni in febbraio

  1. Aqaba 🇯🇴 GiordaniaWadi flash-flood season · 15 ott – 31 mar (di solito)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 🇪🇬 EgittoSinai flash floods · 15 ott – 15 mar (di solito)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. Mar Morto 🇯🇴 GiordaniaWadi flash-flood season · 1 nov – 31 marRain 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. Alessandria d'Egitto 🇪🇬 EgittoWinter storms off the sea · 15 nov – 15 mar (di solito)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 🇦🇷 ArgentinaSummer storm road closures · 15 dic – 15 mar (di solito)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. Fujaira 🇦🇪 Emirati Arabi UnitiWinter rain and wadi floods · 1 dic – 31 mar (di solito)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. Petra 🇯🇴 GiordaniaFlash-flood closures · 1 nov – 31 marThe 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 🇵🇪 PerùRain floods from the ravines · 15 gen – 15 apr (di solito)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 🇵🇪 PerùHighland rains and huaicos · 15 gen – 31 mar (di solito)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. Uadi Rum 🇯🇴 GiordaniaFlash floods in the wadis · 1 nov – 31 mar (di solito)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 dic – 15 mar (di solito)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 🇧🇮 BurundiLong rains and flooding · 1 feb – 31 mag (di solito)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 🇵🇹 PortogalloMondego river floods · 15 dic – 15 mar (di solito)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 dic – 15 mar (di solito)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. Ghiacciaio Franz Josef 🇳🇿 Nuova ZelandaHighway closures in heavy rain · 1 gen – 31 dicThere 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 🇿🇲 ZambiaRainy-season flooding · 1 dic – 31 mar (di solito)Poor drainage and dense informal settlements mean heavy rains regularly submerge roads and low-lying suburbs each rainy season.70
  17. San Paolo 🇧🇷 BrasileSummer storms and flooding · 1 dic – 31 mar (di solito)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 🇦🇷 ArgentinaSummer rain closes the mountain roads · 15 dic – 15 mar (di solito)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. Parco nazionale di Congaree 🇺🇸 Stati Uniti d'AmericaFloodwater on the boardwalk · 1 dic – 30 apr (di solito)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 🇨🇬 Repubblica del CongoStorm flooding and gullies · 15 feb – 15 mag (di solito)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 gen – 20 mar (di solito)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 🇬🇧 Regno UnitoPort Meadow under water · 1 dic – 28 feb (di solito)The Thames spreads across Port Meadow most winters and the towpath north of Walton Well goes under.61
  23. Majuro 🇲🇭 Isole MarshallKing tides wash the road · 15 dic – 15 mar (di solito)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 🇬🇧 Regno UnitoThe Ouse comes up · 1 nov – 28 feb (di solito)King's Staith and the riverside pubs flood most winters — the pubs have tide marks on the walls and mop out afterwards.60
  25. Aguas Calientes 🇵🇪 PerùLandslides on the rail line · 1 gen – 31 mar (di solito)The Urubamba runs high through the wet months and a huaico takes out a stretch of track most years, usually towards Hidroelectrica.59

…e altri 15 in febbraio.

Cosa c'è in programma nel mondo in febbraio →

Stagione delle alluvioni in marzo

  1. Mar Morto 🇯🇴 GiordaniaWadi flash-flood season · 1 nov – 31 marRain 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. Alessandria d'Egitto 🇪🇬 EgittoWinter storms off the sea · 15 nov – 15 mar (di solito)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 🇪🇬 EgittoSinai flash floods · 15 ott – 15 mar (di solito)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 🇦🇷 ArgentinaSummer storm road closures · 15 dic – 15 mar (di solito)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. Petra 🇯🇴 GiordaniaFlash-flood closures · 1 nov – 31 marThe 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 🇯🇴 GiordaniaWadi flash-flood season · 15 ott – 31 mar (di solito)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 dic – 15 mar (di solito)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. Uadi Rum 🇯🇴 GiordaniaFlash floods in the wadis · 1 nov – 31 mar (di solito)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 dic – 15 mar (di solito)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. Fujaira 🇦🇪 Emirati Arabi UnitiWinter rain and wadi floods · 1 dic – 31 mar (di solito)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 🇵🇪 PerùHighland rains and huaicos · 15 gen – 31 mar (di solito)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 🇿🇲 ZambiaRainy-season flooding · 1 dic – 31 mar (di solito)Poor drainage and dense informal settlements mean heavy rains regularly submerge roads and low-lying suburbs each rainy season.78
  13. Trujillo 🇵🇪 PerùRain floods from the ravines · 15 gen – 15 apr (di solito)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 🇵🇹 PortogalloMondego river floods · 15 dic – 15 mar (di solito)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 🇭🇺 UngheriaDanube high water · 1 mar – 30 apr (di solito)Snowmelt upstream pushes the river over the lower quays most springs.74
  16. Parco nazionale di Congaree 🇺🇸 Stati Uniti d'AmericaFloodwater on the boardwalk · 1 dic – 30 apr (di solito)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 🇧🇮 BurundiLong rains and flooding · 1 feb – 31 mag (di solito)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. San Paolo 🇧🇷 BrasileSummer storms and flooding · 1 dic – 31 mar (di solito)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. Dresda 🇩🇪 GermaniaElbe high water · 15 feb – 15 giu (di solito)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 🇦🇷 ArgentinaSummer rain closes the mountain roads · 15 dic – 15 mar (di solito)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. Uluṟu 🇦🇺 AustraliaSummer storms and waterfalls · 1 dic – 15 mar (di solito)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. Colonia 🇩🇪 GermaniaRhine high water · 1 dic – 31 mar (di solito)Winter rain and Alpine melt push the Rhine over the riverside paths most years and occasionally into the old town cellars.67
  23. Breslavia 🇵🇱 PoloniaOdra high water · 1 mar – 31 lug (di solito)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. Ghiacciaio Franz Josef 🇳🇿 Nuova ZelandaHighway closures in heavy rain · 1 gen – 31 dicThere 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 🇺🇸 Stati Uniti d'AmericaOhio River flood season · 1 feb – 15 apr (di solito)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

…e altri 14 in marzo.

Cosa c'è in programma nel mondo in marzo →

Stagione delle alluvioni in aprile

  1. Budapest 🇭🇺 UngheriaDanube high water · 1 mar – 30 apr (di solito)Snowmelt upstream pushes the river over the lower quays most springs.88
  2. Trujillo 🇵🇪 PerùRain floods from the ravines · 15 gen – 15 apr (di solito)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 🇺🇸 Stati Uniti d'AmericaSpring river flooding · 1 apr – 30 giu (di solito)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. Dresda 🇩🇪 GermaniaElbe high water · 15 feb – 15 giu (di solito)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. Breslavia 🇵🇱 PoloniaOdra high water · 1 mar – 31 lug (di solito)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. Parco nazionale di Congaree 🇺🇸 Stati Uniti d'AmericaFloodwater on the boardwalk · 1 dic – 30 apr (di solito)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 🇺🇸 Stati Uniti d'AmericaOhio River flood season · 1 feb – 15 apr (di solito)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. Parco nazionale del Gateway Arch 🇺🇸 Stati Uniti d'AmericaMississippi spring flood · 15 mar – 30 giu (di solito)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 apr – 10 mag (di solito)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 apr – 30 giu (di solito)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 🇧🇯 BeninRainy-season flooding · 15 apr – 31 lug (di solito)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 🇧🇮 BurundiLong rains and flooding · 1 feb – 31 mag (di solito)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. Parati 🇧🇷 BrasileSea into the streets · 1 gen – 31 dicThe 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 🇦🇷 ArgentinaGarganta walkway shut in flood · 1 nov – 30 apr (di solito)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 🇧🇷 BrasileDevil's Throat walkway shut · 1 nov – 30 apr (di solito)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. Ghiacciaio Franz Josef 🇳🇿 Nuova ZelandaHighway closures in heavy rain · 1 gen – 31 dicThere 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 🇨🇬 Repubblica del CongoStorm flooding and gullies · 15 feb – 15 mag (di solito)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 🇧🇷 BrasileRain and spring-tide flooding · 15 gen – 30 apr (di solito)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 🇪🇨 EcuadorRainy season street flooding · 1 gen – 30 apr (di solito)The coastal winter brings heavy downpours that flood low-lying streets, worst when they coincide with high tides on the Estero Salado.45

Cosa c'è in programma nel mondo in aprile →

Stagione delle alluvioni in maggio

  1. Saint Louis 🇺🇸 Stati Uniti d'AmericaSpring river flooding · 1 apr – 30 giu (di solito)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. Dresda 🇩🇪 GermaniaElbe high water · 15 feb – 15 giu (di solito)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. Breslavia 🇵🇱 PoloniaOdra high water · 1 mar – 31 lug (di solito)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. Parco nazionale dei Monti Guadalupe 🇺🇸 Stati Uniti d'AmericaMonsoon storms and flash floods · 15 mag – 30 set (di solito)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 apr – 10 mag (di solito)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. Parati 🇧🇷 BrasileSea into the streets · 1 gen – 31 dicThe 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 🇧🇮 BurundiLong rains and flooding · 1 feb – 31 mag (di solito)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. Parco nazionale del Gateway Arch 🇺🇸 Stati Uniti d'AmericaMississippi spring flood · 15 mar – 30 giu (di solito)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 🇺🇸 Stati Uniti d'AmericaFlash flood season · 1 mag – 15 giu (di solito)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. Giuba 🇸🇸 Sudan del SudRainy-season road cuts · 15 mag – 31 ott (di solito)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 🇨🇬 Repubblica del CongoStorm flooding and gullies · 15 feb – 15 mag (di solito)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 apr – 30 giu (di solito)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 🇧🇯 BeninRainy-season flooding · 15 apr – 31 lug (di solito)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 mag – 20 lug (di solito)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 mag – 15 lug (di solito)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 🇨🇮 Costa d'AvorioRainy-season flash floods · 15 mag – 15 lug (di solito)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 🇨🇳 CinaLi River flood closures · 15 mag – 31 lug (di solito)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. Vangvīang 🇱🇦 LaosFast, muddy Nam Song · 15 mag – 15 ott (di solito)In the rains the river runs high, brown and fast; tubing and kayaking get genuinely risky after heavy downpours.52
  19. Ghiacciaio Franz Josef 🇳🇿 Nuova ZelandaHighway closures in heavy rain · 1 gen – 31 dicThere 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 🇨🇴 ColombiaArroyos in the streets · 1 mag – 15 nov (di solito)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 mag – 31 lug (di solito)Georgetown lies below sea level and drains through canals and kokers that only open at low tide.47
  22. Sylhet 🇧🇩 BangladeshFlash-flood season · 15 mag – 30 set (di solito)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

Cosa c'è in programma nel mondo in maggio →

Stagione delle alluvioni in giugno

  1. Dresda 🇩🇪 GermaniaElbe high water · 15 feb – 15 giu (di solito)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. Breslavia 🇵🇱 PoloniaOdra high water · 1 mar – 31 lug (di solito)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. Parati 🇧🇷 BrasileSea into the streets · 1 gen – 31 dicThe 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. Parco nazionale dei Monti Guadalupe 🇺🇸 Stati Uniti d'AmericaMonsoon storms and flash floods · 15 mag – 30 set (di solito)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 🇺🇸 Stati Uniti d'AmericaSpring river flooding · 1 apr – 30 giu (di solito)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. Parco nazionale dei Saguaro 🇺🇸 Stati Uniti d'AmericaMonsoon season · 15 giu – 30 setFrom 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. Giuba 🇸🇸 Sudan del SudRainy-season road cuts · 15 mag – 31 ott (di solito)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 🇪🇹 EtiopiaKiremt rains flood the roads · 20 giu – 15 set (di solito)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. Parco nazionale del Gateway Arch 🇺🇸 Stati Uniti d'AmericaMississippi spring flood · 15 mar – 30 giu (di solito)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 🇺🇸 Stati Uniti d'AmericaFlash flood season · 1 mag – 15 giu (di solito)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 apr – 30 giu (di solito)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 🇧🇹 BhutanGlacial flood risk on the rivers · 1 giu – 15 ott (di solito)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 mag – 15 lug (di solito)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 🇧🇯 BeninRainy-season flooding · 15 apr – 31 lug (di solito)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 🇨🇳 CinaYangtze flood season · 15 giu – 5 set (di solito)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. Manila 🇵🇭 FilippineHabagat and street flooding · 1 giu – 15 ott (di solito)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. Ghiacciaio Franz Josef 🇳🇿 Nuova ZelandaHighway closures in heavy rain · 1 gen – 31 dicThere 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 giu – 30 set (di solito)Heavy downpours overwhelm the drains in low-lying neighbourhoods, turning main roads into rivers and stalling traffic for hours.51
  19. Abidjan 🇨🇮 Costa d'AvorioRainy-season flash floods · 15 mag – 15 lug (di solito)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 🇨🇴 ColombiaArroyos in the streets · 1 mag – 15 nov (di solito)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 mag – 20 lug (di solito)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 🇬🇳 GuineaRainy season floods · 20 giu – 15 set (di solito)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 mag – 31 lug (di solito)Georgetown lies below sea level and drains through canals and kokers that only open at low tide.48
  24. Guilin 🇨🇳 CinaLi River flood closures · 15 mag – 31 lug (di solito)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. Vangvīang 🇱🇦 LaosFast, muddy Nam Song · 15 mag – 15 ott (di solito)In the rains the river runs high, brown and fast; tubing and kayaking get genuinely risky after heavy downpours.42

…e altri 2 in giugno.

Cosa c'è in programma nel mondo in giugno →

Stagione delle alluvioni in luglio

  1. Breslavia 🇵🇱 PoloniaOdra high water · 1 mar – 31 lug (di solito)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. Parati 🇧🇷 BrasileSea into the streets · 1 gen – 31 dicThe 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. Parco nazionale dei Monti Guadalupe 🇺🇸 Stati Uniti d'AmericaMonsoon storms and flash floods · 15 mag – 30 set (di solito)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 mag – 15 lug (di solito)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. Parco nazionale di Capitol Reef 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 1 lug – 20 set (di solito)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. Parco nazionale di Big Bend 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 1 lug – 30 set (di solito)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. Giuba 🇸🇸 Sudan del SudRainy-season road cuts · 15 mag – 31 ott (di solito)Juba's own streets stay passable, but the dirt roads beyond turn to deep mud and floodwater, cutting off towns for weeks.72
  8. Parco nazionale di Zion 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 1 lug – 20 set (di solito)Late-summer storms over the plateau put water into slot canyons under blue sky downstream.71
  9. Abidjan 🇨🇮 Costa d'AvorioRainy-season flash floods · 15 mag – 15 lug (di solito)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 🇲🇽 MessicoTropical rain and flooding · 1 lug – 15 ott (di solito)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 🇸🇳 SenegalSenegal River flood season · 15 lug – 31 ott (di solito)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. Punti notevoli della Valle della Morte 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 15 lug – 30 set (di solito)Late summer storms tear out the unpaved canyon roads most years, and some stay shut for months afterwards.68
  13. Parco nazionale delle Carlsbad Caverns 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 1 lug – 20 set (di solito)Afternoon storms come off the Guadalupe escarpment and put water across Walnut Canyon Desert Drive and the road up from Whites City.68
  14. Parco nazionale dei Saguaro 🇺🇸 Stati Uniti d'AmericaMonsoon season · 15 giu – 30 setFrom 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 🇧🇯 BeninRainy-season flooding · 15 apr – 31 lug (di solito)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 lug – 30 set (di solito)Storm runoff and then the river rise put whole neighbourhoods on the right bank under water most years.64
  17. Addis Abeba 🇪🇹 EtiopiaKiremt rains flood the roads · 20 giu – 15 set (di solito)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. Parco nazionale delle Canyonlands 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 1 lug – 20 set (di solito)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 mag – 20 lug (di solito)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. Hampi 🇮🇳 IndiaTungabhadra dam releases · 15 lug – 30 set (di solito)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. Parco nazionale degli Arches 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 15 lug – 15 set (di solito)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 lug – 30 set (di solito)The heaviest downpours of the rainy season regularly flood parts of the city, including Wuse 2, Lokogoma and Gwagwalada.59
  23. Barranquilla 🇨🇴 ColombiaArroyos in the streets · 1 mag – 15 nov (di solito)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 lug – 31 ago (di solito)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 mag – 31 lug (di solito)Georgetown lies below sea level and drains through canals and kokers that only open at low tide.55

…e altri 19 in luglio.

Cosa c'è in programma nel mondo in luglio →

Stagione delle alluvioni in agosto

  1. Parati 🇧🇷 BrasileSea into the streets · 1 gen – 31 dicThe 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. Parco nazionale dei Monti Guadalupe 🇺🇸 Stati Uniti d'AmericaMonsoon storms and flash floods · 15 mag – 30 set (di solito)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. Parco nazionale di Capitol Reef 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 1 lug – 20 set (di solito)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. Parco nazionale di Zion 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 1 lug – 20 set (di solito)Late-summer storms over the plateau put water into slot canyons under blue sky downstream.75
  5. Parco nazionale di Big Bend 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 1 lug – 30 set (di solito)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 🇲🇽 MessicoTropical rain and flooding · 1 lug – 15 ott (di solito)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. Punti notevoli della Valle della Morte 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 15 lug – 30 set (di solito)Late summer storms tear out the unpaved canyon roads most years, and some stay shut for months afterwards.71
  8. Giuba 🇸🇸 Sudan del SudRainy-season road cuts · 15 mag – 31 ott (di solito)Juba's own streets stay passable, but the dirt roads beyond turn to deep mud and floodwater, cutting off towns for weeks.71
  9. Parco nazionale dei Saguaro 🇺🇸 Stati Uniti d'AmericaMonsoon season · 15 giu – 30 setFrom 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. Parco nazionale delle Canyonlands 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 1 lug – 20 set (di solito)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 🇲🇷 MauritaniaFlooded districts after storms · 1 ago – 30 set (di solito)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. Parco nazionale degli Arches 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 15 lug – 15 set (di solito)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. Parco nazionale delle Carlsbad Caverns 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 1 lug – 20 set (di solito)Afternoon storms come off the Guadalupe escarpment and put water across Walnut Canyon Desert Drive and the road up from Whites City.67
  14. Hampi 🇮🇳 IndiaTungabhadra dam releases · 15 lug – 30 set (di solito)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 🇸🇳 SenegalSenegal River flood season · 15 lug – 31 ott (di solito)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 🇪🇹 EtiopiaKiremt rains flood the roads · 20 giu – 15 set (di solito)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 lug – 30 set (di solito)Storm runoff and then the river rise put whole neighbourhoods on the right bank under water most years.63
  18. Moab 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 10 lug – 15 set (di solito)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 lug – 31 ago (di solito)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 lug – 31 ago (di solito)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 🇧🇹 BhutanGlacial flood risk on the rivers · 1 giu – 15 ott (di solito)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 lug – 30 set (di solito)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 giu – 30 set (di solito)Heavy downpours overwhelm the drains in low-lying neighbourhoods, turning main roads into rivers and stalling traffic for hours.53
  24. Barranquilla 🇨🇴 ColombiaArroyos in the streets · 1 mag – 15 nov (di solito)The city drains its downpours down the roads, and within minutes certain streets carry a current that will move a car.53
  25. Ghiacciaio Franz Josef 🇳🇿 Nuova ZelandaHighway closures in heavy rain · 1 gen – 31 dicThere 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

…e altri 14 in agosto.

Cosa c'è in programma nel mondo in agosto →

Stagione delle alluvioni in settembre

  1. Avignone 🇫🇷 FranciaAutumn flash floods · 10 set – 30 nov (di solito)Mediterranean downpours can drop months of rain in a few hours on the Vaucluse and Gard in autumn.89
  2. Malaga 🇪🇸 SpagnaAutumn storms and flash floods · 1 set – 30 nov (di solito)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. Genova 🇮🇹 ItaliaAutumn flash floods · 15 set – 30 novWarm sea and steep hills behind a narrow city produce autumn storms that drop a month of rain in hours.85
  4. Parco nazionale dei Monti Guadalupe 🇺🇸 Stati Uniti d'AmericaMonsoon storms and flash floods · 15 mag – 30 set (di solito)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. Amburgo 🇩🇪 GermaniaStorm surge season · 15 set – 31 marThe city counts its storm tide season from mid-September to the end of March.82
  6. Parco nazionale di Capitol Reef 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 1 lug – 20 set (di solito)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. Valencia 🇪🇸 SpagnaGota fria and DANA storms · 1 set – 15 novAutumn is when a cut-off low over a warm Mediterranean can drop a season's rain on the coastal plain in hours.80
  8. Parco nazionale di Zion 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 1 lug – 20 set (di solito)Late-summer storms over the plateau put water into slot canyons under blue sky downstream.80
  9. Moab 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 10 lug – 15 set (di solito)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. Punti notevoli della Valle della Morte 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 15 lug – 30 set (di solito)Late summer storms tear out the unpaved canyon roads most years, and some stay shut for months afterwards.79
  11. Alicante 🇪🇸 SpagnaGota fria storms · 1 set – 15 nov (di solito)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 🇪🇸 SpagnaGota fria storms · 1 set – 15 nov (di solito)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. Parco nazionale degli Arches 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 15 lug – 15 set (di solito)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. Parco nazionale delle Canyonlands 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 1 lug – 20 set (di solito)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. Parco nazionale di Big Bend 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 1 lug – 30 set (di solito)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. Parco nazionale delle Carlsbad Caverns 🇺🇸 Stati Uniti d'AmericaMonsoon flash floods · 1 lug – 20 set (di solito)Afternoon storms come off the Guadalupe escarpment and put water across Walnut Canyon Desert Drive and the road up from Whites City.76
  17. Parco nazionale dei Saguaro 🇺🇸 Stati Uniti d'AmericaMonsoon season · 15 giu – 30 setFrom 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. Parati 🇧🇷 BrasileSea into the streets · 1 gen – 31 dicThe 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 🇲🇽 MessicoTropical rain and flooding · 1 lug – 15 ott (di solito)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. Giuba 🇸🇸 Sudan del SudRainy-season road cuts · 15 mag – 31 ott (di solito)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 🇺🇸 Stati Uniti d'AmericaKing tide flooding · 1 set – 15 nov (di solito)The highest autumn tides put salt water over the Battery and into the lower peninsula streets on clear days, no storm required.69
  22. Hampi 🇮🇳 IndiaTungabhadra dam releases · 15 lug – 30 set (di solito)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 🇪🇹 EtiopiaKiremt rains flood the roads · 20 giu – 15 set (di solito)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 lug – 30 set (di solito)Storm runoff and then the river rise put whole neighbourhoods on the right bank under water most years.66
  25. Yaoundé 🇨🇲 CamerunFlash-flood season · 1 set – 31 ott (di solito)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

…e altri 27 in settembre.

Cosa c'è in programma nel mondo in settembre →

Stagione delle alluvioni in ottobre

  1. Malaga 🇪🇸 SpagnaAutumn storms and flash floods · 1 set – 30 nov (di solito)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 🇪🇸 SpagnaGota fria storms · 1 set – 15 nov (di solito)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 🇪🇸 SpagnaGota fria storms · 1 set – 15 nov (di solito)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. Valencia 🇪🇸 SpagnaGota fria and DANA storms · 1 set – 15 novAutumn 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 🇺🇸 Stati Uniti d'AmericaKing tide flooding · 1 set – 15 nov (di solito)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 🇲🇽 MessicoTropical rain and flooding · 1 lug – 15 ott (di solito)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. Avignone 🇫🇷 FranciaAutumn flash floods · 10 set – 30 nov (di solito)Mediterranean downpours can drop months of rain in a few hours on the Vaucluse and Gard in autumn.81
  8. Venezia 🇮🇹 ItaliaAcqua alta season · 1 ott – 15 gen (di solito)High water comes with the autumn tides.79
  9. Dahab 🇪🇬 EgittoSinai flash floods · 15 ott – 15 mar (di solito)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. Genova 🇮🇹 ItaliaAutumn flash floods · 15 set – 30 novWarm sea and steep hills behind a narrow city produce autumn storms that drop a month of rain in hours.76
  11. Como 🇮🇹 ItaliaLake floods the lakefront · 1 ott – 15 dic (di solito)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 🇧🇹 BhutanGlacial flood risk on the rivers · 1 giu – 15 ott (di solito)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 🇮🇹 ItaliaAutumn storm trail closures · 1 ott – 30 nov (di solito)Autumn brings the downpours that flattened Vernazza and Monterosso in 2011.73
  14. Aqaba 🇯🇴 GiordaniaWadi flash-flood season · 15 ott – 31 mar (di solito)Rain over the mountains behind town runs off bare rock and crosses the roads out to Wadi Rum and the Dead Sea.72
  15. Amburgo 🇩🇪 GermaniaStorm surge season · 15 set – 31 marThe city counts its storm tide season from mid-September to the end of March.69
  16. Baghdad 🇮🇶 IraqStreet flooding in the first rains · 25 ott – 31 gen (di solito)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. Giuba 🇸🇸 Sudan del SudRainy-season road cuts · 15 mag – 31 ott (di solito)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 🇺🇸 Stati Uniti d'AmericaKing tide flooding · 1 set – 15 nov (di solito)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. Vangvīang 🇱🇦 LaosFast, muddy Nam Song · 15 mag – 15 ott (di solito)In the rains the river runs high, brown and fast; tubing and kayaking get genuinely risky after heavy downpours.63
  20. Bangui 🇨🇫 Repubblica CentrafricanaUbangi River flood season · 1 ott – 30 nov (di solito)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. Parati 🇧🇷 BrasileSea into the streets · 1 gen – 31 dicThe 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 🇸🇳 SenegalSenegal River flood season · 15 lug – 31 ott (di solito)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 🇧🇯 BeninOueme river flood · 1 set – 31 ott (di solito)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 🇨🇲 CamerunFlash-flood season · 1 set – 31 ott (di solito)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 🇹🇭 ThailandiaFlood season on the rivers · 1 set – 15 nov (di solito)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

…e altri 9 in ottobre.

Cosa c'è in programma nel mondo in ottobre →

Stagione delle alluvioni in novembre

  1. Alessandria d'Egitto 🇪🇬 EgittoWinter storms off the sea · 15 nov – 15 mar (di solito)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. Petra 🇯🇴 GiordaniaFlash-flood closures · 1 nov – 31 marThe 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. Baghdad 🇮🇶 IraqStreet flooding in the first rains · 25 ott – 31 gen (di solito)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 🇪🇸 SpagnaGota fria storms · 1 set – 15 nov (di solito)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 🇪🇸 SpagnaAutumn storms and flash floods · 1 set – 30 nov (di solito)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 🇪🇸 SpagnaGota fria storms · 1 set – 15 nov (di solito)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. Uadi Rum 🇯🇴 GiordaniaFlash floods in the wadis · 1 nov – 31 mar (di solito)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 🇺🇸 Stati Uniti d'AmericaKing tide flooding · 1 set – 15 nov (di solito)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 🇪🇬 EgittoSinai flash floods · 15 ott – 15 mar (di solito)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. Mar Morto 🇯🇴 GiordaniaWadi flash-flood season · 1 nov – 31 marRain 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. Valencia 🇪🇸 SpagnaGota fria and DANA storms · 1 set – 15 novAutumn 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 🇯🇴 GiordaniaWadi flash-flood season · 15 ott – 31 mar (di solito)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 Mecca 🇸🇦 Arabia SauditaWinter flash floods · 1 nov – 31 gen (di solito)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 🇺🇸 Stati Uniti d'AmericaKing tide flooding · 1 set – 15 nov (di solito)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 🇨🇫 Repubblica CentrafricanaUbangi River flood season · 1 ott – 30 nov (di solito)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 🇹🇭 ThailandiaFlood season on the rivers · 1 set – 15 nov (di solito)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. Avignone 🇫🇷 FranciaAutumn flash floods · 10 set – 30 nov (di solito)Mediterranean downpours can drop months of rain in a few hours on the Vaucluse and Gard in autumn.70
  18. Genova 🇮🇹 ItaliaAutumn flash floods · 15 set – 30 novWarm sea and steep hills behind a narrow city produce autumn storms that drop a month of rain in hours.67
  19. Cinque Terre 🇮🇹 ItaliaAutumn storm trail closures · 1 ott – 30 nov (di solito)Autumn brings the downpours that flattened Vernazza and Monterosso in 2011.67
  20. Bangkok 🇹🇭 ThailandiaChao Phraya flood season · 15 set – 15 nov (di solito)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. Como 🇮🇹 ItaliaLake floods the lakefront · 1 ott – 15 dic (di solito)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. Venezia 🇮🇹 ItaliaAcqua alta season · 1 ott – 15 gen (di solito)High water comes with the autumn tides.63
  23. Puerto Iguazú 🇦🇷 ArgentinaGarganta walkway shut in flood · 1 nov – 30 apr (di solito)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 🇧🇷 BrasileDevil's Throat walkway shut · 1 nov – 30 apr (di solito)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. Parati 🇧🇷 BrasileSea into the streets · 1 gen – 31 dicThe 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

…e altri 11 in novembre.

Cosa c'è in programma nel mondo in novembre →

Stagione delle alluvioni in dicembre

  1. Aqaba 🇯🇴 GiordaniaWadi flash-flood season · 15 ott – 31 mar (di solito)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 🇦🇷 ArgentinaSummer storm road closures · 15 dic – 15 mar (di solito)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 🇪🇬 EgittoSinai flash floods · 15 ott – 15 mar (di solito)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. Alessandria d'Egitto 🇪🇬 EgittoWinter storms off the sea · 15 nov – 15 mar (di solito)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. Mar Morto 🇯🇴 GiordaniaWadi flash-flood season · 1 nov – 31 marRain 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. Fujaira 🇦🇪 Emirati Arabi UnitiWinter rain and wadi floods · 1 dic – 31 mar (di solito)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 Mecca 🇸🇦 Arabia SauditaWinter flash floods · 1 nov – 31 gen (di solito)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. Petra 🇯🇴 GiordaniaFlash-flood closures · 1 nov – 31 marThe 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. Uadi Rum 🇯🇴 GiordaniaFlash floods in the wadis · 1 nov – 31 mar (di solito)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 dic – 15 mar (di solito)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. Baghdad 🇮🇶 IraqStreet flooding in the first rains · 25 ott – 31 gen (di solito)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 dic – 15 mar (di solito)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. San Paolo 🇧🇷 BrasileSummer storms and flooding · 1 dic – 31 mar (di solito)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. Ho Chi Minh 🇻🇳 VietnamPeak tide flooding · 15 set – 15 dic (di solito)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 🇿🇲 ZambiaRainy-season flooding · 1 dic – 31 mar (di solito)Poor drainage and dense informal settlements mean heavy rains regularly submerge roads and low-lying suburbs each rainy season.69
  16. Coimbra 🇵🇹 PortogalloMondego river floods · 15 dic – 15 mar (di solito)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 🇦🇷 ArgentinaSummer rain closes the mountain roads · 15 dic – 15 mar (di solito)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. Ghiacciaio Franz Josef 🇳🇿 Nuova ZelandaHighway closures in heavy rain · 1 gen – 31 dicThere 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. Como 🇮🇹 ItaliaLake floods the lakefront · 1 ott – 15 dic (di solito)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. Parco nazionale di Phong Nha-Ke Bang 🇻🇳 VietnamFlood closures in the caves · 1 set – 15 dic (di solito)The wet months put the Son and Chay rivers up through the show caves and the big expeditions stop entirely.61
  21. Uluṟu 🇦🇺 AustraliaSummer storms and waterfalls · 1 dic – 15 mar (di solito)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. Parco nazionale di Congaree 🇺🇸 Stati Uniti d'AmericaFloodwater on the boardwalk · 1 dic – 30 apr (di solito)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 🇨🇬 Repubblica del CongoCongo River flood season · 15 nov – 31 gen (di solito)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. Venezia 🇮🇹 ItaliaAcqua alta season · 1 ott – 15 gen (di solito)High water comes with the autumn tides.58
  25. Huế 🇻🇳 VietnamFlood season · 25 set – 15 dic (di solito)Hue is the wettest city in the country and the Perfume River comes up into the low streets most years, sometimes for days.57

…e altri 12 in dicembre.

Cosa c'è in programma nel mondo in dicembre →

Stagione delle alluvioni, mese per mese nel mondo | SeasonMap