موسم الفيضانات، شهرًا بشهر حول العالم
النهر يصل إلى الشوارع في معظم السنوات.
هذه صفحة تحذير، لا توصية. يشمل موسم الفيضانات 112 وجهة على SeasonMap؛ والأشهر أدناه هي التي تكون فيها نافذة الخطر مفتوحة — ومعظم أسابيعها تمرّ بهدوء، والدرجة بجانب كل مكان تبقى درجة المناخ العادية، بالمخاطر وكل شيء.
متى يكون قائمًا
موسم الفيضانات في يناير
- الفجيرة 🇦🇪 الإمارات العربية المتحدةWinter rain and wadi floods · 1 ديس – 31 مار (عادةً)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
- دهب 🇪🇬 مصرSinai flash floods · 15 أكت – 15 مار (عادةً)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
- مكة 🇸🇦 السعوديةWinter flash floods · 1 نوف – 31 ينا (عادةً)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
- العقبة 🇯🇴 الأردنWadi flash-flood season · 15 أكت – 31 مار (عادةً)Rain over the mountains behind town runs off bare rock and crosses the roads out to Wadi Rum and the Dead Sea.90
- Cafayate 🇦🇷 الأرجنتينSummer storm road closures · 15 ديس – 15 مار (عادةً)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
- تروخيو 🇵🇪 بيروRain floods from the ravines · 15 ينا – 15 أبر (عادةً)In most years the coast stays dry, but warm-sea years bring heavy rains that activate the dry ravines above the city.85
- الإسكندرية 🇪🇬 مصرWinter storms off the sea · 15 نوف – 15 مار (عادةً)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
- البحر الميت 🇯🇴 الأردنWadi flash-flood season · 1 نوف – 31 مارRain 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
- إيكا 🇵🇪 بيروHighland rains and huaicos · 15 ينا – 31 مار (عادةً)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
- البتراء 🇯🇴 الأردنFlash-flood closures · 1 نوف – 31 مارThe Siq is a drain for a wide catchment, and after heavy rain on the plateau the authority evacuates the site with little warning.79
- وادي رم 🇯🇴 الأردنFlash floods in the wadis · 1 نوف – 31 مار (عادةً)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
- غابورون 🇧🇼 بوتسواناSummer flash floods · 1 ديس – 15 مار (عادةً)Intense summer storms can overwhelm the city's drainage; the February 2025 floods killed people in Gaborone and closed roads, bridges and schools.75
- بغداد 🇮🇶 العراقStreet flooding in the first rains · 25 أكت – 31 ينا (عادةً)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
- هراري 🇿🇼 زيمبابويFlash floods in the heavy rains · 1 ديس – 15 مار (عادةً)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
- Franz Josef 🇳🇿 نيوزيلنداHighway closures in heavy rain · 1 ينا – 31 ديسThere 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
- قلمرية 🇵🇹 البرتغالMondego river floods · 15 ديس – 15 مار (عادةً)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
- برازافيل 🇨🇬 جمهورية الكونغوCongo River flood season · 15 نوف – 31 ينا (عادةً)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
- ساو باولو 🇧🇷 البرازيلSummer storms and flooding · 1 ديس – 31 مار (عادةً)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
- سالتا 🇦🇷 الأرجنتينSummer rain closes the mountain roads · 15 ديس – 15 مار (عادةً)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
- لوساكا 🇿🇲 زامبياRainy-season flooding · 1 ديس – 31 مار (عادةً)Poor drainage and dense informal settlements mean heavy rains regularly submerge roads and low-lying suburbs each rainy season.60
- أغواس كالينتس 🇵🇪 بيروLandslides on the rail line · 1 ينا – 31 مار (عادةً)The Urubamba runs high through the wet months and a huaico takes out a stretch of track most years, usually towards Hidroelectrica.60
- البندقية 🇮🇹 إيطالياAcqua alta season · 1 أكت – 15 ينا (عادةً)High water comes with the autumn tides.59
- حديقة كنغري الوطنية 🇺🇸 الولايات المتحدةFloodwater on the boardwalk · 1 ديس – 30 أبر (عادةً)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
- ماجورو 🇲🇭 جزر مارشالKing tides wash the road · 15 ديس – 15 مار (عادةً)The atoll is a few hundred metres wide in places with the lagoon on one side and the ocean on the other.57
- تاراوا 🇰🇮 كيريباتيKing tides over the causeways · 15 ينا – 20 مار (عادةً)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
…و15 غيرها في يناير.
موسم الفيضانات في فبراير
- العقبة 🇯🇴 الأردنWadi flash-flood season · 15 أكت – 31 مار (عادةً)Rain over the mountains behind town runs off bare rock and crosses the roads out to Wadi Rum and the Dead Sea.96
- دهب 🇪🇬 مصرSinai flash floods · 15 أكت – 15 مار (عادةً)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
- البحر الميت 🇯🇴 الأردنWadi flash-flood season · 1 نوف – 31 مارRain 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
- الإسكندرية 🇪🇬 مصرWinter storms off the sea · 15 نوف – 15 مار (عادةً)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
- Cafayate 🇦🇷 الأرجنتينSummer storm road closures · 15 ديس – 15 مار (عادةً)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
- الفجيرة 🇦🇪 الإمارات العربية المتحدةWinter rain and wadi floods · 1 ديس – 31 مار (عادةً)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
- البتراء 🇯🇴 الأردنFlash-flood closures · 1 نوف – 31 مارThe Siq is a drain for a wide catchment, and after heavy rain on the plateau the authority evacuates the site with little warning.82
- تروخيو 🇵🇪 بيروRain floods from the ravines · 15 ينا – 15 أبر (عادةً)In most years the coast stays dry, but warm-sea years bring heavy rains that activate the dry ravines above the city.80
- إيكا 🇵🇪 بيروHighland rains and huaicos · 15 ينا – 31 مار (عادةً)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
- وادي رم 🇯🇴 الأردنFlash floods in the wadis · 1 نوف – 31 مار (عادةً)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
- هراري 🇿🇼 زيمبابويFlash floods in the heavy rains · 1 ديس – 15 مار (عادةً)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
- بوجومبورا 🇧🇮 بورونديLong rains and flooding · 1 فبر – 31 مايو (عادةً)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
- قلمرية 🇵🇹 البرتغالMondego river floods · 15 ديس – 15 مار (عادةً)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
- غابورون 🇧🇼 بوتسواناSummer flash floods · 1 ديس – 15 مار (عادةً)Intense summer storms can overwhelm the city's drainage; the February 2025 floods killed people in Gaborone and closed roads, bridges and schools.73
- Franz Josef 🇳🇿 نيوزيلنداHighway closures in heavy rain · 1 ينا – 31 ديسThere 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
- لوساكا 🇿🇲 زامبياRainy-season flooding · 1 ديس – 31 مار (عادةً)Poor drainage and dense informal settlements mean heavy rains regularly submerge roads and low-lying suburbs each rainy season.70
- ساو باولو 🇧🇷 البرازيلSummer storms and flooding · 1 ديس – 31 مار (عادةً)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
- سالتا 🇦🇷 الأرجنتينSummer rain closes the mountain roads · 15 ديس – 15 مار (عادةً)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
- حديقة كنغري الوطنية 🇺🇸 الولايات المتحدةFloodwater on the boardwalk · 1 ديس – 30 أبر (عادةً)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
- برازافيل 🇨🇬 جمهورية الكونغوStorm flooding and gullies · 15 فبر – 15 مايو (عادةً)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
- تاراوا 🇰🇮 كيريباتيKing tides over the causeways · 15 ينا – 20 مار (عادةً)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
- أكسفورد 🇬🇧 المملكة المتحدةPort Meadow under water · 1 ديس – 28 فبر (عادةً)The Thames spreads across Port Meadow most winters and the towpath north of Walton Well goes under.61
- ماجورو 🇲🇭 جزر مارشالKing tides wash the road · 15 ديس – 15 مار (عادةً)The atoll is a few hundred metres wide in places with the lagoon on one side and the ocean on the other.60
- يورك 🇬🇧 المملكة المتحدةThe Ouse comes up · 1 نوف – 28 فبر (عادةً)King's Staith and the riverside pubs flood most winters — the pubs have tide marks on the walls and mop out afterwards.60
- أغواس كالينتس 🇵🇪 بيروLandslides on the rail line · 1 ينا – 31 مار (عادةً)The Urubamba runs high through the wet months and a huaico takes out a stretch of track most years, usually towards Hidroelectrica.59
…و15 غيرها في فبراير.
موسم الفيضانات في مارس
- البحر الميت 🇯🇴 الأردنWadi flash-flood season · 1 نوف – 31 مارRain 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
- الإسكندرية 🇪🇬 مصرWinter storms off the sea · 15 نوف – 15 مار (عادةً)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
- دهب 🇪🇬 مصرSinai flash floods · 15 أكت – 15 مار (عادةً)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
- Cafayate 🇦🇷 الأرجنتينSummer storm road closures · 15 ديس – 15 مار (عادةً)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
- البتراء 🇯🇴 الأردنFlash-flood closures · 1 نوف – 31 مارThe Siq is a drain for a wide catchment, and after heavy rain on the plateau the authority evacuates the site with little warning.88
- العقبة 🇯🇴 الأردنWadi flash-flood season · 15 أكت – 31 مار (عادةً)Rain over the mountains behind town runs off bare rock and crosses the roads out to Wadi Rum and the Dead Sea.88
- هراري 🇿🇼 زيمبابويFlash floods in the heavy rains · 1 ديس – 15 مار (عادةً)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
- وادي رم 🇯🇴 الأردنFlash floods in the wadis · 1 نوف – 31 مار (عادةً)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
- غابورون 🇧🇼 بوتسواناSummer flash floods · 1 ديس – 15 مار (عادةً)Intense summer storms can overwhelm the city's drainage; the February 2025 floods killed people in Gaborone and closed roads, bridges and schools.84
- الفجيرة 🇦🇪 الإمارات العربية المتحدةWinter rain and wadi floods · 1 ديس – 31 مار (عادةً)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
- إيكا 🇵🇪 بيروHighland rains and huaicos · 15 ينا – 31 مار (عادةً)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
- لوساكا 🇿🇲 زامبياRainy-season flooding · 1 ديس – 31 مار (عادةً)Poor drainage and dense informal settlements mean heavy rains regularly submerge roads and low-lying suburbs each rainy season.78
- تروخيو 🇵🇪 بيروRain floods from the ravines · 15 ينا – 15 أبر (عادةً)In most years the coast stays dry, but warm-sea years bring heavy rains that activate the dry ravines above the city.77
- قلمرية 🇵🇹 البرتغالMondego river floods · 15 ديس – 15 مار (عادةً)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
- بودابست 🇭🇺 المجرDanube high water · 1 مار – 30 أبر (عادةً)Snowmelt upstream pushes the river over the lower quays most springs.74
- حديقة كنغري الوطنية 🇺🇸 الولايات المتحدةFloodwater on the boardwalk · 1 ديس – 30 أبر (عادةً)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
- بوجومبورا 🇧🇮 بورونديLong rains and flooding · 1 فبر – 31 مايو (عادةً)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
- ساو باولو 🇧🇷 البرازيلSummer storms and flooding · 1 ديس – 31 مار (عادةً)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
- درسدن 🇩🇪 ألمانياElbe high water · 15 فبر – 15 يون (عادةً)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
- سالتا 🇦🇷 الأرجنتينSummer rain closes the mountain roads · 15 ديس – 15 مار (عادةً)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
- أولورو 🇦🇺 أسترالياSummer storms and waterfalls · 1 ديس – 15 مار (عادةً)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
- كولونيا 🇩🇪 ألمانياRhine high water · 1 ديس – 31 مار (عادةً)Winter rain and Alpine melt push the Rhine over the riverside paths most years and occasionally into the old town cellars.67
- فروتسواف 🇵🇱 بولنداOdra high water · 1 مار – 31 يول (عادةً)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
- Franz Josef 🇳🇿 نيوزيلنداHighway closures in heavy rain · 1 ينا – 31 ديسThere 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
- سينسيناتي 🇺🇸 الولايات المتحدةOhio River flood season · 1 فبر – 15 أبر (عادةً)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
…و14 غيرها في مارس.
موسم الفيضانات في أبريل
- بودابست 🇭🇺 المجرDanube high water · 1 مار – 30 أبر (عادةً)Snowmelt upstream pushes the river over the lower quays most springs.88
- تروخيو 🇵🇪 بيروRain floods from the ravines · 15 ينا – 15 أبر (عادةً)In most years the coast stays dry, but warm-sea years bring heavy rains that activate the dry ravines above the city.87
- سانت لويس 🇺🇸 الولايات المتحدةSpring river flooding · 1 أبر – 30 يون (عادةً)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
- درسدن 🇩🇪 ألمانياElbe high water · 15 فبر – 15 يون (عادةً)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
- فروتسواف 🇵🇱 بولنداOdra high water · 1 مار – 31 يول (عادةً)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
- حديقة كنغري الوطنية 🇺🇸 الولايات المتحدةFloodwater on the boardwalk · 1 ديس – 30 أبر (عادةً)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
- سينسيناتي 🇺🇸 الولايات المتحدةOhio River flood season · 1 فبر – 15 أبر (عادةً)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
- منتزه بوابة القوس الوطني 🇺🇸 الولايات المتحدةMississippi spring flood · 15 مار – 30 يون (عادةً)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
- وينيبيغ 🇨🇦 كنداRed River flood season · 1 أبر – 10 مايو (عادةً)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
- لومي 🇹🇬 توغوLong-rains street flooding · 1 أبر – 30 يون (عادةً)The long rains turn streets in Be, Nyekonakpoe, Agoe and other districts into muddy torrents after each downpour because the drains are clogged.66
- كوتونو 🇧🇯 بنينRainy-season flooding · 15 أبر – 31 يول (عادةً)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
- بوجومبورا 🇧🇮 بورونديLong rains and flooding · 1 فبر – 31 مايو (عادةً)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
- Paraty 🇧🇷 البرازيلSea into the streets · 1 ينا – 31 ديسThe 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
- بويرتو جواسيو 🇦🇷 الأرجنتينGarganta walkway shut in flood · 1 نوف – 30 أبر (عادةً)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
- فوز دو إغواسو 🇧🇷 البرازيلDevil's Throat walkway shut · 1 نوف – 30 أبر (عادةً)When the Iguacu runs above the safe limit the catwalk out to the Devil's Throat closes on both sides, sometimes for days.64
- Franz Josef 🇳🇿 نيوزيلنداHighway closures in heavy rain · 1 ينا – 31 ديسThere 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
- برازافيل 🇨🇬 جمهورية الكونغوStorm flooding and gullies · 15 فبر – 15 مايو (عادةً)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
- بليم 🇧🇷 البرازيلRain and spring-tide flooding · 15 ينا – 30 أبر (عادةً)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
- غواياكيل 🇪🇨 الإكوادورRainy season street flooding · 1 ينا – 30 أبر (عادةً)The coastal winter brings heavy downpours that flood low-lying streets, worst when they coincide with high tides on the Estero Salado.45
موسم الفيضانات في مايو
- سانت لويس 🇺🇸 الولايات المتحدةSpring river flooding · 1 أبر – 30 يون (عادةً)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
- درسدن 🇩🇪 ألمانياElbe high water · 15 فبر – 15 يون (عادةً)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
- فروتسواف 🇵🇱 بولنداOdra high water · 1 مار – 31 يول (عادةً)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
- حديقة جبال غوادالوبي الوطنية 🇺🇸 الولايات المتحدةMonsoon storms and flash floods · 15 مايو – 30 سبت (عادةً)The wet months bring heavy afternoon thunderstorms and flash flooding in the canyons, which is also what breaks the heat of the day.81
- وينيبيغ 🇨🇦 كنداRed River flood season · 1 أبر – 10 مايو (عادةً)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
- Paraty 🇧🇷 البرازيلSea into the streets · 1 ينا – 31 ديسThe 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
- بوجومبورا 🇧🇮 بورونديLong rains and flooding · 1 فبر – 31 مايو (عادةً)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
- منتزه بوابة القوس الوطني 🇺🇸 الولايات المتحدةMississippi spring flood · 15 مار – 30 يون (عادةً)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
- سان أنطونيو 🇺🇸 الولايات المتحدةFlash flood season · 1 مايو – 15 يون (عادةً)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
- جوبا 🇸🇸 جنوب السودانRainy-season road cuts · 15 مايو – 31 أكت (عادةً)Juba's own streets stay passable, but the dirt roads beyond turn to deep mud and floodwater, cutting off towns for weeks.68
- برازافيل 🇨🇬 جمهورية الكونغوStorm flooding and gullies · 15 فبر – 15 مايو (عادةً)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
- لومي 🇹🇬 توغوLong-rains street flooding · 1 أبر – 30 يون (عادةً)The long rains turn streets in Be, Nyekonakpoe, Agoe and other districts into muddy torrents after each downpour because the drains are clogged.63
- كوتونو 🇧🇯 بنينRainy-season flooding · 15 أبر – 31 يول (عادةً)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
- لاغوس 🇳🇬 نيجيرياFlash-flood season · 1 مايو – 20 يول (عادةً)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
- كيب كوست 🇬🇭 غاناMajor rainy season floods · 15 مايو – 15 يول (عادةً)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
- أبيدجان 🇨🇮 ساحل العاجRainy-season flash floods · 15 مايو – 15 يول (عادةً)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
- غويلين 🇨🇳 الصينLi River flood closures · 15 مايو – 31 يول (عادةً)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
- فانغ فينغ 🇱🇦 لاوسFast, muddy Nam Song · 15 مايو – 15 أكت (عادةً)In the rains the river runs high, brown and fast; tubing and kayaking get genuinely risky after heavy downpours.52
- Franz Josef 🇳🇿 نيوزيلنداHighway closures in heavy rain · 1 ينا – 31 ديسThere 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
- بارانكيا 🇨🇴 كولومبياArroyos in the streets · 1 مايو – 15 نوف (عادةً)The city drains its downpours down the roads, and within minutes certain streets carry a current that will move a car.49
- جورج تاون 🇬🇾 غياناFlooding in the city · 1 مايو – 31 يول (عادةً)Georgetown lies below sea level and drains through canals and kokers that only open at low tide.47
- سلهت 🇧🇩 بنغلاديشFlash-flood season · 15 مايو – 30 سبت (عادةً)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
موسم الفيضانات في يونيو
- درسدن 🇩🇪 ألمانياElbe high water · 15 فبر – 15 يون (عادةً)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
- فروتسواف 🇵🇱 بولنداOdra high water · 1 مار – 31 يول (عادةً)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
- Paraty 🇧🇷 البرازيلSea into the streets · 1 ينا – 31 ديسThe 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
- حديقة جبال غوادالوبي الوطنية 🇺🇸 الولايات المتحدةMonsoon storms and flash floods · 15 مايو – 30 سبت (عادةً)The wet months bring heavy afternoon thunderstorms and flash flooding in the canyons, which is also what breaks the heat of the day.78
- سانت لويس 🇺🇸 الولايات المتحدةSpring river flooding · 1 أبر – 30 يون (عادةً)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
- منتزه ساغوارو الوطني 🇺🇸 الولايات المتحدةMonsoon season · 15 يون – 30 سبتFrom 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
- جوبا 🇸🇸 جنوب السودانRainy-season road cuts · 15 مايو – 31 أكت (عادةً)Juba's own streets stay passable, but the dirt roads beyond turn to deep mud and floodwater, cutting off towns for weeks.71
- أديس أبابا 🇪🇹 إثيوبياKiremt rains flood the roads · 20 يون – 15 سبت (عادةً)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
- منتزه بوابة القوس الوطني 🇺🇸 الولايات المتحدةMississippi spring flood · 15 مار – 30 يون (عادةً)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
- سان أنطونيو 🇺🇸 الولايات المتحدةFlash flood season · 1 مايو – 15 يون (عادةً)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
- لومي 🇹🇬 توغوLong-rains street flooding · 1 أبر – 30 يون (عادةً)The long rains turn streets in Be, Nyekonakpoe, Agoe and other districts into muddy torrents after each downpour because the drains are clogged.59
- بونخا 🇧🇹 بوتانGlacial flood risk on the rivers · 1 يون – 15 أكت (عادةً)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
- كيب كوست 🇬🇭 غاناMajor rainy season floods · 15 مايو – 15 يول (عادةً)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
- كوتونو 🇧🇯 بنينRainy-season flooding · 15 أبر – 31 يول (عادةً)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
- تشونغتشينغ 🇨🇳 الصينYangtze flood season · 15 يون – 5 سبت (عادةً)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
- مانيلا 🇵🇭 الفلبينHabagat and street flooding · 1 يون – 15 أكت (عادةً)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
- Franz Josef 🇳🇿 نيوزيلنداHighway closures in heavy rain · 1 ينا – 31 ديسThere 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
- مونروفيا 🇱🇷 ليبيرياFlooded streets in the rains · 1 يون – 30 سبت (عادةً)Heavy downpours overwhelm the drains in low-lying neighbourhoods, turning main roads into rivers and stalling traffic for hours.51
- أبيدجان 🇨🇮 ساحل العاجRainy-season flash floods · 15 مايو – 15 يول (عادةً)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
- بارانكيا 🇨🇴 كولومبياArroyos in the streets · 1 مايو – 15 نوف (عادةً)The city drains its downpours down the roads, and within minutes certain streets carry a current that will move a car.50
- لاغوس 🇳🇬 نيجيرياFlash-flood season · 1 مايو – 20 يول (عادةً)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
- كوناكري 🇬🇳 غينياRainy season floods · 20 يون – 15 سبت (عادةً)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
- جورج تاون 🇬🇾 غياناFlooding in the city · 1 مايو – 31 يول (عادةً)Georgetown lies below sea level and drains through canals and kokers that only open at low tide.48
- غويلين 🇨🇳 الصينLi River flood closures · 15 مايو – 31 يول (عادةً)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
- فانغ فينغ 🇱🇦 لاوسFast, muddy Nam Song · 15 مايو – 15 أكت (عادةً)In the rains the river runs high, brown and fast; tubing and kayaking get genuinely risky after heavy downpours.42
…و2 غيرها في يونيو.
موسم الفيضانات في يوليو
- فروتسواف 🇵🇱 بولنداOdra high water · 1 مار – 31 يول (عادةً)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
- Paraty 🇧🇷 البرازيلSea into the streets · 1 ينا – 31 ديسThe 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
- حديقة جبال غوادالوبي الوطنية 🇺🇸 الولايات المتحدةMonsoon storms and flash floods · 15 مايو – 30 سبت (عادةً)The wet months bring heavy afternoon thunderstorms and flash flooding in the canyons, which is also what breaks the heat of the day.77
- كيب كوست 🇬🇭 غاناMajor rainy season floods · 15 مايو – 15 يول (عادةً)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
- حديقة كابيتول ريف الوطنية 🇺🇸 الولايات المتحدةMonsoon flash floods · 1 يول – 20 سبت (عادةً)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
- حديقة بيغ بند الوطنية 🇺🇸 الولايات المتحدةMonsoon flash floods · 1 يول – 30 سبت (عادةً)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
- جوبا 🇸🇸 جنوب السودانRainy-season road cuts · 15 مايو – 31 أكت (عادةً)Juba's own streets stay passable, but the dirt roads beyond turn to deep mud and floodwater, cutting off towns for weeks.72
- متنزه صهيون الوطني 🇺🇸 الولايات المتحدةMonsoon flash floods · 1 يول – 20 سبت (عادةً)Late-summer storms over the plateau put water into slot canyons under blue sky downstream.71
- أبيدجان 🇨🇮 ساحل العاجRainy-season flash floods · 15 مايو – 15 يول (عادةً)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
- مونتيري 🇲🇽 المكسيكTropical rain and flooding · 1 يول – 15 أكت (عادةً)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
- سانت لويس 🇸🇳 السنغالSenegal River flood season · 15 يول – 31 أكت (عادةً)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
- متنزه وادي الموت الوطني 🇺🇸 الولايات المتحدةMonsoon flash floods · 15 يول – 30 سبت (عادةً)Late summer storms tear out the unpaved canyon roads most years, and some stay shut for months afterwards.68
- حديقة كهوف كارلسباد الوطنية 🇺🇸 الولايات المتحدةMonsoon flash floods · 1 يول – 20 سبت (عادةً)Afternoon storms come off the Guadalupe escarpment and put water across Walnut Canyon Desert Drive and the road up from Whites City.68
- منتزه ساغوارو الوطني 🇺🇸 الولايات المتحدةMonsoon season · 15 يون – 30 سبتFrom 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
- كوتونو 🇧🇯 بنينRainy-season flooding · 15 أبر – 31 يول (عادةً)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
- نيامي 🇳🇪 النيجرNiger river flooding · 15 يول – 30 سبت (عادةً)Storm runoff and then the river rise put whole neighbourhoods on the right bank under water most years.64
- أديس أبابا 🇪🇹 إثيوبياKiremt rains flood the roads · 20 يون – 15 سبت (عادةً)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
- متنزه كانيونلاندز الوطني 🇺🇸 الولايات المتحدةMonsoon flash floods · 1 يول – 20 سبت (عادةً)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
- لاغوس 🇳🇬 نيجيرياFlash-flood season · 1 مايو – 20 يول (عادةً)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
- هامبي 🇮🇳 الهندTungabhadra dam releases · 15 يول – 30 سبت (عادةً)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
- حديقة الأقواس الوطنية 🇺🇸 الولايات المتحدةMonsoon flash floods · 15 يول – 15 سبت (عادةً)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
- أبوجا 🇳🇬 نيجيرياFlash floods · 1 يول – 30 سبت (عادةً)The heaviest downpours of the rainy season regularly flood parts of the city, including Wuse 2, Lokogoma and Gwagwalada.59
- بارانكيا 🇨🇴 كولومبياArroyos in the streets · 1 مايو – 15 نوف (عادةً)The city drains its downpours down the roads, and within minutes certain streets carry a current that will move a car.59
- كراتشي 🇵🇰 باكستانUrban flooding · 1 يول – 31 أغس (عادةً)A single heavy spell puts the underpasses and half the main arteries under water and takes the grid down with them.56
- جورج تاون 🇬🇾 غياناFlooding in the city · 1 مايو – 31 يول (عادةً)Georgetown lies below sea level and drains through canals and kokers that only open at low tide.55
…و19 غيرها في يوليو.
موسم الفيضانات في أغسطس
- Paraty 🇧🇷 البرازيلSea into the streets · 1 ينا – 31 ديسThe 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
- حديقة جبال غوادالوبي الوطنية 🇺🇸 الولايات المتحدةMonsoon storms and flash floods · 15 مايو – 30 سبت (عادةً)The wet months bring heavy afternoon thunderstorms and flash flooding in the canyons, which is also what breaks the heat of the day.79
- حديقة كابيتول ريف الوطنية 🇺🇸 الولايات المتحدةMonsoon flash floods · 1 يول – 20 سبت (عادةً)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
- متنزه صهيون الوطني 🇺🇸 الولايات المتحدةMonsoon flash floods · 1 يول – 20 سبت (عادةً)Late-summer storms over the plateau put water into slot canyons under blue sky downstream.75
- حديقة بيغ بند الوطنية 🇺🇸 الولايات المتحدةMonsoon flash floods · 1 يول – 30 سبت (عادةً)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
- مونتيري 🇲🇽 المكسيكTropical rain and flooding · 1 يول – 15 أكت (عادةً)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
- متنزه وادي الموت الوطني 🇺🇸 الولايات المتحدةMonsoon flash floods · 15 يول – 30 سبت (عادةً)Late summer storms tear out the unpaved canyon roads most years, and some stay shut for months afterwards.71
- جوبا 🇸🇸 جنوب السودانRainy-season road cuts · 15 مايو – 31 أكت (عادةً)Juba's own streets stay passable, but the dirt roads beyond turn to deep mud and floodwater, cutting off towns for weeks.71
- منتزه ساغوارو الوطني 🇺🇸 الولايات المتحدةMonsoon season · 15 يون – 30 سبتFrom 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
- متنزه كانيونلاندز الوطني 🇺🇸 الولايات المتحدةMonsoon flash floods · 1 يول – 20 سبت (عادةً)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
- نواكشوط 🇲🇷 موريتانياFlooded districts after storms · 1 أغس – 30 سبت (عادةً)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
- حديقة الأقواس الوطنية 🇺🇸 الولايات المتحدةMonsoon flash floods · 15 يول – 15 سبت (عادةً)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
- حديقة كهوف كارلسباد الوطنية 🇺🇸 الولايات المتحدةMonsoon flash floods · 1 يول – 20 سبت (عادةً)Afternoon storms come off the Guadalupe escarpment and put water across Walnut Canyon Desert Drive and the road up from Whites City.67
- هامبي 🇮🇳 الهندTungabhadra dam releases · 15 يول – 30 سبت (عادةً)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
- سانت لويس 🇸🇳 السنغالSenegal River flood season · 15 يول – 31 أكت (عادةً)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
- أديس أبابا 🇪🇹 إثيوبياKiremt rains flood the roads · 20 يون – 15 سبت (عادةً)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
- نيامي 🇳🇪 النيجرNiger river flooding · 15 يول – 30 سبت (عادةً)Storm runoff and then the river rise put whole neighbourhoods on the right bank under water most years.63
- مواب 🇺🇸 الولايات المتحدةMonsoon flash floods · 10 يول – 15 سبت (عادةً)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
- كراتشي 🇵🇰 باكستانUrban flooding · 1 يول – 31 أغس (عادةً)A single heavy spell puts the underpasses and half the main arteries under water and takes the grid down with them.60
- إسلام آباد 🇵🇰 باكستانNullah flooding · 1 يول – 31 أغس (عادةً)A cell parking over the Margallas fills the storm channels through the sectors within the hour and takes the Expressway underpasses with them.56
- بونخا 🇧🇹 بوتانGlacial flood risk on the rivers · 1 يون – 15 أكت (عادةً)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
- أبوجا 🇳🇬 نيجيرياFlash floods · 1 يول – 30 سبت (عادةً)The heaviest downpours of the rainy season regularly flood parts of the city, including Wuse 2, Lokogoma and Gwagwalada.53
- مونروفيا 🇱🇷 ليبيرياFlooded streets in the rains · 1 يون – 30 سبت (عادةً)Heavy downpours overwhelm the drains in low-lying neighbourhoods, turning main roads into rivers and stalling traffic for hours.53
- بارانكيا 🇨🇴 كولومبياArroyos in the streets · 1 مايو – 15 نوف (عادةً)The city drains its downpours down the roads, and within minutes certain streets carry a current that will move a car.53
- Franz Josef 🇳🇿 نيوزيلنداHighway closures in heavy rain · 1 ينا – 31 ديسThere 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
…و14 غيرها في أغسطس.
موسم الفيضانات في سبتمبر
- أفنيون 🇫🇷 فرنساAutumn flash floods · 10 سبت – 30 نوف (عادةً)Mediterranean downpours can drop months of rain in a few hours on the Vaucluse and Gard in autumn.89
- مالقة 🇪🇸 إسبانياAutumn storms and flash floods · 1 سبت – 30 نوف (عادةً)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
- جنوة 🇮🇹 إيطالياAutumn flash floods · 15 سبت – 30 نوفWarm sea and steep hills behind a narrow city produce autumn storms that drop a month of rain in hours.85
- حديقة جبال غوادالوبي الوطنية 🇺🇸 الولايات المتحدةMonsoon storms and flash floods · 15 مايو – 30 سبت (عادةً)The wet months bring heavy afternoon thunderstorms and flash flooding in the canyons, which is also what breaks the heat of the day.83
- هامبورغ 🇩🇪 ألمانياStorm surge season · 15 سبت – 31 مارThe city counts its storm tide season from mid-September to the end of March.82
- حديقة كابيتول ريف الوطنية 🇺🇸 الولايات المتحدةMonsoon flash floods · 1 يول – 20 سبت (عادةً)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
- بلنسية 🇪🇸 إسبانياGota fria and DANA storms · 1 سبت – 15 نوفAutumn is when a cut-off low over a warm Mediterranean can drop a season's rain on the coastal plain in hours.80
- متنزه صهيون الوطني 🇺🇸 الولايات المتحدةMonsoon flash floods · 1 يول – 20 سبت (عادةً)Late-summer storms over the plateau put water into slot canyons under blue sky downstream.80
- مواب 🇺🇸 الولايات المتحدةMonsoon flash floods · 10 يول – 15 سبت (عادةً)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
- متنزه وادي الموت الوطني 🇺🇸 الولايات المتحدةMonsoon flash floods · 15 يول – 30 سبت (عادةً)Late summer storms tear out the unpaved canyon roads most years, and some stay shut for months afterwards.79
- لقنت 🇪🇸 إسبانياGota fria storms · 1 سبت – 15 نوف (عادةً)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
- بنيدورم 🇪🇸 إسبانياGota fria storms · 1 سبت – 15 نوف (عادةً)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
- حديقة الأقواس الوطنية 🇺🇸 الولايات المتحدةMonsoon flash floods · 15 يول – 15 سبت (عادةً)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
- متنزه كانيونلاندز الوطني 🇺🇸 الولايات المتحدةMonsoon flash floods · 1 يول – 20 سبت (عادةً)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
- حديقة بيغ بند الوطنية 🇺🇸 الولايات المتحدةMonsoon flash floods · 1 يول – 30 سبت (عادةً)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
- حديقة كهوف كارلسباد الوطنية 🇺🇸 الولايات المتحدةMonsoon flash floods · 1 يول – 20 سبت (عادةً)Afternoon storms come off the Guadalupe escarpment and put water across Walnut Canyon Desert Drive and the road up from Whites City.76
- منتزه ساغوارو الوطني 🇺🇸 الولايات المتحدةMonsoon season · 15 يون – 30 سبتFrom 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
- Paraty 🇧🇷 البرازيلSea into the streets · 1 ينا – 31 ديسThe 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
- مونتيري 🇲🇽 المكسيكTropical rain and flooding · 1 يول – 15 أكت (عادةً)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
- جوبا 🇸🇸 جنوب السودانRainy-season road cuts · 15 مايو – 31 أكت (عادةً)Juba's own streets stay passable, but the dirt roads beyond turn to deep mud and floodwater, cutting off towns for weeks.72
- تشارلستون 🇺🇸 الولايات المتحدةKing tide flooding · 1 سبت – 15 نوف (عادةً)The highest autumn tides put salt water over the Battery and into the lower peninsula streets on clear days, no storm required.69
- هامبي 🇮🇳 الهندTungabhadra dam releases · 15 يول – 30 سبت (عادةً)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
- أديس أبابا 🇪🇹 إثيوبياKiremt rains flood the roads · 20 يون – 15 سبت (عادةً)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
- نيامي 🇳🇪 النيجرNiger river flooding · 15 يول – 30 سبت (عادةً)Storm runoff and then the river rise put whole neighbourhoods on the right bank under water most years.66
- ياوندي 🇨🇲 الكاميرونFlash-flood season · 1 سبت – 31 أكت (عادةً)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
…و27 غيرها في سبتمبر.
موسم الفيضانات في أكتوبر
- مالقة 🇪🇸 إسبانياAutumn storms and flash floods · 1 سبت – 30 نوف (عادةً)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
- لقنت 🇪🇸 إسبانياGota fria storms · 1 سبت – 15 نوف (عادةً)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
- بنيدورم 🇪🇸 إسبانياGota fria storms · 1 سبت – 15 نوف (عادةً)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
- بلنسية 🇪🇸 إسبانياGota fria and DANA storms · 1 سبت – 15 نوفAutumn is when a cut-off low over a warm Mediterranean can drop a season's rain on the coastal plain in hours.88
- تشارلستون 🇺🇸 الولايات المتحدةKing tide flooding · 1 سبت – 15 نوف (عادةً)The highest autumn tides put salt water over the Battery and into the lower peninsula streets on clear days, no storm required.85
- مونتيري 🇲🇽 المكسيكTropical rain and flooding · 1 يول – 15 أكت (عادةً)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
- أفنيون 🇫🇷 فرنساAutumn flash floods · 10 سبت – 30 نوف (عادةً)Mediterranean downpours can drop months of rain in a few hours on the Vaucluse and Gard in autumn.81
- البندقية 🇮🇹 إيطالياAcqua alta season · 1 أكت – 15 ينا (عادةً)High water comes with the autumn tides.79
- دهب 🇪🇬 مصرSinai flash floods · 15 أكت – 15 مار (عادةً)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
- جنوة 🇮🇹 إيطالياAutumn flash floods · 15 سبت – 30 نوفWarm sea and steep hills behind a narrow city produce autumn storms that drop a month of rain in hours.76
- كومو 🇮🇹 إيطالياLake floods the lakefront · 1 أكت – 15 ديس (عادةً)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
- بونخا 🇧🇹 بوتانGlacial flood risk on the rivers · 1 يون – 15 أكت (عادةً)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
- سنك تير 🇮🇹 إيطالياAutumn storm trail closures · 1 أكت – 30 نوف (عادةً)Autumn brings the downpours that flattened Vernazza and Monterosso in 2011.73
- العقبة 🇯🇴 الأردنWadi flash-flood season · 15 أكت – 31 مار (عادةً)Rain over the mountains behind town runs off bare rock and crosses the roads out to Wadi Rum and the Dead Sea.72
- هامبورغ 🇩🇪 ألمانياStorm surge season · 15 سبت – 31 مارThe city counts its storm tide season from mid-September to the end of March.69
- بغداد 🇮🇶 العراقStreet flooding in the first rains · 25 أكت – 31 ينا (عادةً)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
- جوبا 🇸🇸 جنوب السودانRainy-season road cuts · 15 مايو – 31 أكت (عادةً)Juba's own streets stay passable, but the dirt roads beyond turn to deep mud and floodwater, cutting off towns for weeks.69
- ميامي 🇺🇸 الولايات المتحدةKing tide flooding · 1 سبت – 15 نوف (عادةً)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
- فانغ فينغ 🇱🇦 لاوسFast, muddy Nam Song · 15 مايو – 15 أكت (عادةً)In the rains the river runs high, brown and fast; tubing and kayaking get genuinely risky after heavy downpours.63
- بنغي 🇨🇫 جمهورية إفريقيا الوسطىUbangi River flood season · 1 أكت – 30 نوف (عادةً)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
- Paraty 🇧🇷 البرازيلSea into the streets · 1 ينا – 31 ديسThe 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
- سانت لويس 🇸🇳 السنغالSenegal River flood season · 15 يول – 31 أكت (عادةً)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
- كوتونو 🇧🇯 بنينOueme river flood · 1 سبت – 31 أكت (عادةً)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
- ياوندي 🇨🇲 الكاميرونFlash-flood season · 1 سبت – 31 أكت (عادةً)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
- برا ناكون سي أيوتايا 🇹🇭 تايلاندFlood season on the rivers · 1 سبت – 15 نوف (عادةً)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
…و9 غيرها في أكتوبر.
موسم الفيضانات في نوفمبر
- الإسكندرية 🇪🇬 مصرWinter storms off the sea · 15 نوف – 15 مار (عادةً)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
- البتراء 🇯🇴 الأردنFlash-flood closures · 1 نوف – 31 مارThe Siq is a drain for a wide catchment, and after heavy rain on the plateau the authority evacuates the site with little warning.91
- بغداد 🇮🇶 العراقStreet flooding in the first rains · 25 أكت – 31 ينا (عادةً)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
- لقنت 🇪🇸 إسبانياGota fria storms · 1 سبت – 15 نوف (عادةً)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
- مالقة 🇪🇸 إسبانياAutumn storms and flash floods · 1 سبت – 30 نوف (عادةً)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
- بنيدورم 🇪🇸 إسبانياGota fria storms · 1 سبت – 15 نوف (عادةً)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
- وادي رم 🇯🇴 الأردنFlash floods in the wadis · 1 نوف – 31 مار (عادةً)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
- تشارلستون 🇺🇸 الولايات المتحدةKing tide flooding · 1 سبت – 15 نوف (عادةً)The highest autumn tides put salt water over the Battery and into the lower peninsula streets on clear days, no storm required.86
- دهب 🇪🇬 مصرSinai flash floods · 15 أكت – 15 مار (عادةً)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
- البحر الميت 🇯🇴 الأردنWadi flash-flood season · 1 نوف – 31 مارRain 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
- بلنسية 🇪🇸 إسبانياGota fria and DANA storms · 1 سبت – 15 نوفAutumn is when a cut-off low over a warm Mediterranean can drop a season's rain on the coastal plain in hours.85
- العقبة 🇯🇴 الأردنWadi flash-flood season · 15 أكت – 31 مار (عادةً)Rain over the mountains behind town runs off bare rock and crosses the roads out to Wadi Rum and the Dead Sea.83
- مكة 🇸🇦 السعوديةWinter flash floods · 1 نوف – 31 ينا (عادةً)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
- ميامي 🇺🇸 الولايات المتحدةKing tide flooding · 1 سبت – 15 نوف (عادةً)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
- بنغي 🇨🇫 جمهورية إفريقيا الوسطىUbangi River flood season · 1 أكت – 30 نوف (عادةً)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
- برا ناكون سي أيوتايا 🇹🇭 تايلاندFlood season on the rivers · 1 سبت – 15 نوف (عادةً)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
- أفنيون 🇫🇷 فرنساAutumn flash floods · 10 سبت – 30 نوف (عادةً)Mediterranean downpours can drop months of rain in a few hours on the Vaucluse and Gard in autumn.70
- جنوة 🇮🇹 إيطالياAutumn flash floods · 15 سبت – 30 نوفWarm sea and steep hills behind a narrow city produce autumn storms that drop a month of rain in hours.67
- سنك تير 🇮🇹 إيطالياAutumn storm trail closures · 1 أكت – 30 نوف (عادةً)Autumn brings the downpours that flattened Vernazza and Monterosso in 2011.67
- بانكوك 🇹🇭 تايلاندChao Phraya flood season · 15 سبت – 15 نوف (عادةً)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
- كومو 🇮🇹 إيطالياLake floods the lakefront · 1 أكت – 15 ديس (عادةً)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
- البندقية 🇮🇹 إيطالياAcqua alta season · 1 أكت – 15 ينا (عادةً)High water comes with the autumn tides.63
- بويرتو جواسيو 🇦🇷 الأرجنتينGarganta walkway shut in flood · 1 نوف – 30 أبر (عادةً)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
- فوز دو إغواسو 🇧🇷 البرازيلDevil's Throat walkway shut · 1 نوف – 30 أبر (عادةً)When the Iguacu runs above the safe limit the catwalk out to the Devil's Throat closes on both sides, sometimes for days.62
- Paraty 🇧🇷 البرازيلSea into the streets · 1 ينا – 31 ديسThe 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
…و11 غيرها في نوفمبر.
موسم الفيضانات في ديسمبر
- العقبة 🇯🇴 الأردنWadi flash-flood season · 15 أكت – 31 مار (عادةً)Rain over the mountains behind town runs off bare rock and crosses the roads out to Wadi Rum and the Dead Sea.93
- Cafayate 🇦🇷 الأرجنتينSummer storm road closures · 15 ديس – 15 مار (عادةً)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
- دهب 🇪🇬 مصرSinai flash floods · 15 أكت – 15 مار (عادةً)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
- الإسكندرية 🇪🇬 مصرWinter storms off the sea · 15 نوف – 15 مار (عادةً)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
- البحر الميت 🇯🇴 الأردنWadi flash-flood season · 1 نوف – 31 مارRain 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
- الفجيرة 🇦🇪 الإمارات العربية المتحدةWinter rain and wadi floods · 1 ديس – 31 مار (عادةً)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
- مكة 🇸🇦 السعوديةWinter flash floods · 1 نوف – 31 ينا (عادةً)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
- البتراء 🇯🇴 الأردنFlash-flood closures · 1 نوف – 31 مارThe Siq is a drain for a wide catchment, and after heavy rain on the plateau the authority evacuates the site with little warning.82
- وادي رم 🇯🇴 الأردنFlash floods in the wadis · 1 نوف – 31 مار (عادةً)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
- هراري 🇿🇼 زيمبابويFlash floods in the heavy rains · 1 ديس – 15 مار (عادةً)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
- بغداد 🇮🇶 العراقStreet flooding in the first rains · 25 أكت – 31 ينا (عادةً)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
- غابورون 🇧🇼 بوتسواناSummer flash floods · 1 ديس – 15 مار (عادةً)Intense summer storms can overwhelm the city's drainage; the February 2025 floods killed people in Gaborone and closed roads, bridges and schools.74
- ساو باولو 🇧🇷 البرازيلSummer storms and flooding · 1 ديس – 31 مار (عادةً)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
- مدينة هو تشي منه 🇻🇳 فيتنامPeak tide flooding · 15 سبت – 15 ديس (عادةً)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
- لوساكا 🇿🇲 زامبياRainy-season flooding · 1 ديس – 31 مار (عادةً)Poor drainage and dense informal settlements mean heavy rains regularly submerge roads and low-lying suburbs each rainy season.69
- قلمرية 🇵🇹 البرتغالMondego river floods · 15 ديس – 15 مار (عادةً)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
- سالتا 🇦🇷 الأرجنتينSummer rain closes the mountain roads · 15 ديس – 15 مار (عادةً)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
- Franz Josef 🇳🇿 نيوزيلنداHighway closures in heavy rain · 1 ينا – 31 ديسThere 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
- كومو 🇮🇹 إيطالياLake floods the lakefront · 1 أكت – 15 ديس (عادةً)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
- متنزه فونك نها كه بانغ القومي 🇻🇳 فيتنامFlood closures in the caves · 1 سبت – 15 ديس (عادةً)The wet months put the Son and Chay rivers up through the show caves and the big expeditions stop entirely.61
- أولورو 🇦🇺 أسترالياSummer storms and waterfalls · 1 ديس – 15 مار (عادةً)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
- حديقة كنغري الوطنية 🇺🇸 الولايات المتحدةFloodwater on the boardwalk · 1 ديس – 30 أبر (عادةً)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
- برازافيل 🇨🇬 جمهورية الكونغوCongo River flood season · 15 نوف – 31 ينا (عادةً)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
- البندقية 🇮🇹 إيطالياAcqua alta season · 1 أكت – 15 ينا (عادةً)High water comes with the autumn tides.58
- هوي 🇻🇳 فيتنامFlood season · 25 سبت – 15 ديس (عادةً)Hue is the wettest city in the country and the Perfume River comes up into the low streets most years, sometimes for days.57
…و12 غيرها في ديسمبر.