洪水季，逐月看遍全世界

1. 🏖️ 富查伊拉 🇦🇪 阿拉伯联合酋长国Winter rain and wadi floods · 12月1日 – 3月31日（通常）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. 🏖️ 达哈卜 🇪🇬 埃及Sinai flash floods · 10月15日 – 3月15日（通常）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. 🏙️ 麦加 🇸🇦 沙特阿拉伯Winter flash floods · 11月1日 – 1月31日（通常）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. 🏖️ 亚喀巴 🇯🇴 约旦Wadi flash-flood season · 10月15日 – 3月31日（通常）Rain over the mountains behind town runs off bare rock and crosses the roads out to Wadi Rum and the Dead Sea.90
5. 🏙️ 卡法亞特 🇦🇷 阿根廷Summer storm road closures · 12月15日 – 3月15日（通常）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. 🏙️ 特鲁希略 🇵🇪 秘鲁Rain floods from the ravines · 1月15日 – 4月15日（通常）In most years the coast stays dry, but warm-sea years bring heavy rains that activate the dry ravines above the city.85
7. 🏙️ 亚历山大 🇪🇬 埃及Winter storms off the sea · 11月15日 – 3月15日（通常）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. 🏖️ 死海 🇯🇴 约旦Wadi flash-flood season · 11月1日 – 3月31日Rain 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. 🏙️ 伊卡 🇵🇪 秘鲁Highland rains and huaicos · 1月15日 – 3月31日（通常）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. 🏙️ 佩特拉 🇯🇴 约旦Flash-flood closures · 11月1日 – 3月31日The 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. 🥾 拉姆干谷 🇯🇴 约旦Flash floods in the wadis · 11月1日 – 3月31日（通常）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. 🏙️ 哈博罗内 🇧🇼 博茨瓦纳Summer flash floods · 12月1日 – 3月15日（通常）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. 🏙️ 巴格达 🇮🇶 伊拉克Street flooding in the first rains · 10月25日 – 1月31日（通常）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. 🏙️ 哈拉雷 🇿🇼 津巴布韦Flash floods in the heavy rains · 12月1日 – 3月15日（通常）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. 🥾 法兰士·约瑟夫冰川 🇳🇿 新西兰Highway closures in heavy rain · 1月1日 – 12月31日There is one road in and one road out, and a big West Coast rain event closes it north or south of the village a few times a year.69
16. 🏙️ 科英布拉 🇵🇹 葡萄牙Mondego river floods · 12月15日 – 3月15日（通常）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. 🏙️ 布拉柴维尔 🇨🇬 刚果共和国Congo River flood season · 11月15日 – 1月31日（通常）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. 🏙️ 圣保罗 🇧🇷 巴西Summer storms and flooding · 12月1日 – 3月31日（通常）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. 🏙️ 萨尔塔 🇦🇷 阿根廷Summer rain closes the mountain roads · 12月15日 – 3月15日（通常）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. 🏙️ 卢萨卡 🇿🇲 赞比亚Rainy-season flooding · 12月1日 – 3月31日（通常）Poor drainage and dense informal settlements mean heavy rains regularly submerge roads and low-lying suburbs each rainy season.60
21. 🥾 馬丘比丘鎮 🇵🇪 秘鲁Landslides on the rail line · 1月1日 – 3月31日（通常）The Urubamba runs high through the wet months and a huaico takes out a stretch of track most years, usually towards Hidroelectrica.60
22. 🏙️ 威尼斯 🇮🇹 意大利Acqua alta season · 10月1日 – 1月15日（通常）High water comes with the autumn tides.59
23. 🏞️ 康加里国家公园 🇺🇸 美国Floodwater on the boardwalk · 12月1日 – 4月30日（通常）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. 🏝️ 马朱罗 🇲🇭 马绍尔群岛King tides wash the road · 12月15日 – 3月15日（通常）The atoll is a few hundred metres wide in places with the lagoon on one side and the ocean on the other.57
25. 🏝️ 塔拉瓦环礁 🇰🇮 基里巴斯King tides over the causeways · 1月15日 – 3月20日（通常）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

……1月还有 15 个。

1月全世界有什么活动 →

1. 🏖️ 亚喀巴 🇯🇴 约旦Wadi flash-flood season · 10月15日 – 3月31日（通常）Rain over the mountains behind town runs off bare rock and crosses the roads out to Wadi Rum and the Dead Sea.96
2. 🏖️ 达哈卜 🇪🇬 埃及Sinai flash floods · 10月15日 – 3月15日（通常）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. 🏖️ 死海 🇯🇴 约旦Wadi flash-flood season · 11月1日 – 3月31日Rain 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. 🏙️ 亚历山大 🇪🇬 埃及Winter storms off the sea · 11月15日 – 3月15日（通常）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. 🏙️ 卡法亞特 🇦🇷 阿根廷Summer storm road closures · 12月15日 – 3月15日（通常）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. 🏖️ 富查伊拉 🇦🇪 阿拉伯联合酋长国Winter rain and wadi floods · 12月1日 – 3月31日（通常）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. 🏙️ 佩特拉 🇯🇴 约旦Flash-flood closures · 11月1日 – 3月31日The 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. 🏙️ 特鲁希略 🇵🇪 秘鲁Rain floods from the ravines · 1月15日 – 4月15日（通常）In most years the coast stays dry, but warm-sea years bring heavy rains that activate the dry ravines above the city.80
9. 🏙️ 伊卡 🇵🇪 秘鲁Highland rains and huaicos · 1月15日 – 3月31日（通常）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. 🥾 拉姆干谷 🇯🇴 约旦Flash floods in the wadis · 11月1日 – 3月31日（通常）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. 🏙️ 哈拉雷 🇿🇼 津巴布韦Flash floods in the heavy rains · 12月1日 – 3月15日（通常）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. 🏙️ 布琼布拉 🇧🇮 布隆迪Long rains and flooding · 2月1日 – 5月31日（通常）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. 🏙️ 科英布拉 🇵🇹 葡萄牙Mondego river floods · 12月15日 – 3月15日（通常）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. 🏙️ 哈博罗内 🇧🇼 博茨瓦纳Summer flash floods · 12月1日 – 3月15日（通常）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. 🥾 法兰士·约瑟夫冰川 🇳🇿 新西兰Highway closures in heavy rain · 1月1日 – 12月31日There is one road in and one road out, and a big West Coast rain event closes it north or south of the village a few times a year.71
16. 🏙️ 卢萨卡 🇿🇲 赞比亚Rainy-season flooding · 12月1日 – 3月31日（通常）Poor drainage and dense informal settlements mean heavy rains regularly submerge roads and low-lying suburbs each rainy season.70
17. 🏙️ 圣保罗 🇧🇷 巴西Summer storms and flooding · 12月1日 – 3月31日（通常）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. 🏙️ 萨尔塔 🇦🇷 阿根廷Summer rain closes the mountain roads · 12月15日 – 3月15日（通常）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. 🏞️ 康加里国家公园 🇺🇸 美国Floodwater on the boardwalk · 12月1日 – 4月30日（通常）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. 🏙️ 布拉柴维尔 🇨🇬 刚果共和国Storm flooding and gullies · 2月15日 – 5月15日（通常）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. 🏝️ 塔拉瓦环礁 🇰🇮 基里巴斯King tides over the causeways · 1月15日 – 3月20日（通常）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. 🏙️ 牛津 🇬🇧 英国Port Meadow under water · 12月1日 – 2月28日（通常）The Thames spreads across Port Meadow most winters and the towpath north of Walton Well goes under.61
23. 🏝️ 马朱罗 🇲🇭 马绍尔群岛King tides wash the road · 12月15日 – 3月15日（通常）The atoll is a few hundred metres wide in places with the lagoon on one side and the ocean on the other.60
24. 🏙️ 约克 🇬🇧 英国The Ouse comes up · 11月1日 – 2月28日（通常）King's Staith and the riverside pubs flood most winters — the pubs have tide marks on the walls and mop out afterwards.60
25. 🥾 馬丘比丘鎮 🇵🇪 秘鲁Landslides on the rail line · 1月1日 – 3月31日（通常）The Urubamba runs high through the wet months and a huaico takes out a stretch of track most years, usually towards Hidroelectrica.59

……2月还有 15 个。

2月全世界有什么活动 →

1. 🏖️ 死海 🇯🇴 约旦Wadi flash-flood season · 11月1日 – 3月31日Rain 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. 🏙️ 亚历山大 🇪🇬 埃及Winter storms off the sea · 11月15日 – 3月15日（通常）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. 🏖️ 达哈卜 🇪🇬 埃及Sinai flash floods · 10月15日 – 3月15日（通常）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. 🏙️ 卡法亞特 🇦🇷 阿根廷Summer storm road closures · 12月15日 – 3月15日（通常）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. 🏙️ 佩特拉 🇯🇴 约旦Flash-flood closures · 11月1日 – 3月31日The 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. 🏖️ 亚喀巴 🇯🇴 约旦Wadi flash-flood season · 10月15日 – 3月31日（通常）Rain over the mountains behind town runs off bare rock and crosses the roads out to Wadi Rum and the Dead Sea.88
7. 🏙️ 哈拉雷 🇿🇼 津巴布韦Flash floods in the heavy rains · 12月1日 – 3月15日（通常）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. 🥾 拉姆干谷 🇯🇴 约旦Flash floods in the wadis · 11月1日 – 3月31日（通常）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. 🏙️ 哈博罗内 🇧🇼 博茨瓦纳Summer flash floods · 12月1日 – 3月15日（通常）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. 🏖️ 富查伊拉 🇦🇪 阿拉伯联合酋长国Winter rain and wadi floods · 12月1日 – 3月31日（通常）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. 🏙️ 伊卡 🇵🇪 秘鲁Highland rains and huaicos · 1月15日 – 3月31日（通常）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. 🏙️ 卢萨卡 🇿🇲 赞比亚Rainy-season flooding · 12月1日 – 3月31日（通常）Poor drainage and dense informal settlements mean heavy rains regularly submerge roads and low-lying suburbs each rainy season.78
13. 🏙️ 特鲁希略 🇵🇪 秘鲁Rain floods from the ravines · 1月15日 – 4月15日（通常）In most years the coast stays dry, but warm-sea years bring heavy rains that activate the dry ravines above the city.77
14. 🏙️ 科英布拉 🇵🇹 葡萄牙Mondego river floods · 12月15日 – 3月15日（通常）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. 🏙️ 布达佩斯 🇭🇺 匈牙利Danube high water · 3月1日 – 4月30日（通常）Snowmelt upstream pushes the river over the lower quays most springs.74
16. 🏞️ 康加里国家公园 🇺🇸 美国Floodwater on the boardwalk · 12月1日 – 4月30日（通常）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. 🏙️ 布琼布拉 🇧🇮 布隆迪Long rains and flooding · 2月1日 – 5月31日（通常）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. 🏙️ 圣保罗 🇧🇷 巴西Summer storms and flooding · 12月1日 – 3月31日（通常）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. 🏙️ 德累斯顿市 🇩🇪 德国Elbe high water · 2月15日 – 6月15日（通常）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. 🏙️ 萨尔塔 🇦🇷 阿根廷Summer rain closes the mountain roads · 12月15日 – 3月15日（通常）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. 🏞️ 乌鲁汝 🇦🇺 澳大利亚Summer storms and waterfalls · 12月1日 – 3月15日（通常）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. 🏙️ 科隆 🇩🇪 德国Rhine high water · 12月1日 – 3月31日（通常）Winter rain and Alpine melt push the Rhine over the riverside paths most years and occasionally into the old town cellars.67
23. 🏙️ 弗罗茨瓦夫 🇵🇱 波兰Odra high water · 3月1日 – 7月31日（通常）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. 🥾 法兰士·约瑟夫冰川 🇳🇿 新西兰Highway closures in heavy rain · 1月1日 – 12月31日There is one road in and one road out, and a big West Coast rain event closes it north or south of the village a few times a year.67
25. 🏙️ 辛辛那提 🇺🇸 美国Ohio River flood season · 2月1日 – 4月15日（通常）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

……3月还有 14 个。

3月全世界有什么活动 →

1. 🏙️ 布达佩斯 🇭🇺 匈牙利Danube high water · 3月1日 – 4月30日（通常）Snowmelt upstream pushes the river over the lower quays most springs.88
2. 🏙️ 特鲁希略 🇵🇪 秘鲁Rain floods from the ravines · 1月15日 – 4月15日（通常）In most years the coast stays dry, but warm-sea years bring heavy rains that activate the dry ravines above the city.87
3. 🏙️ 圣路易斯 🇺🇸 美国Spring river flooding · 4月1日 – 6月30日（通常）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. 🏙️ 德累斯顿市 🇩🇪 德国Elbe high water · 2月15日 – 6月15日（通常）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. 🏙️ 弗罗茨瓦夫 🇵🇱 波兰Odra high water · 3月1日 – 7月31日（通常）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. 🏞️ 康加里国家公园 🇺🇸 美国Floodwater on the boardwalk · 12月1日 – 4月30日（通常）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. 🏙️ 辛辛那提 🇺🇸 美国Ohio River flood season · 2月1日 – 4月15日（通常）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. 🏞️ 杰弗逊国土扩张纪念碑 🇺🇸 美国Mississippi spring flood · 3月15日 – 6月30日（通常）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. 🏙️ 温尼伯 🇨🇦 加拿大Red River flood season · 4月1日 – 5月10日（通常）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. 🏙️ 洛美 🇹🇬 多哥Long-rains street flooding · 4月1日 – 6月30日（通常）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. 🏙️ 科托努 🇧🇯 贝宁Rainy-season flooding · 4月15日 – 7月31日（通常）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. 🏙️ 布琼布拉 🇧🇮 布隆迪Long rains and flooding · 2月1日 – 5月31日（通常）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. 🏙️ 帕拉蒂 🇧🇷 巴西Sea into the streets · 1月1日 – 12月31日The colonial centre was laid below the spring-tide line on purpose, so around the full and new moons the sea comes up through the seawall openings and drains back out, taking the day's dirt with it.65
14. 🏞️ 伊瓜蘇港 🇦🇷 阿根廷Garganta walkway shut in flood · 11月1日 – 4月30日（通常）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. 🏞️ 伊瓜苏 🇧🇷 巴西Devil's Throat walkway shut · 11月1日 – 4月30日（通常）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. 🥾 法兰士·约瑟夫冰川 🇳🇿 新西兰Highway closures in heavy rain · 1月1日 – 12月31日There is one road in and one road out, and a big West Coast rain event closes it north or south of the village a few times a year.60
17. 🏙️ 布拉柴维尔 🇨🇬 刚果共和国Storm flooding and gullies · 2月15日 – 5月15日（通常）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. 🏙️ 贝伦 🇧🇷 巴西Rain and spring-tide flooding · 1月15日 – 4月30日（通常）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. 🏙️ 瓜亚基尔 🇪🇨 厄瓜多尔Rainy season street flooding · 1月1日 – 4月30日（通常）The coastal winter brings heavy downpours that flood low-lying streets, worst when they coincide with high tides on the Estero Salado.45

4月全世界有什么活动 →

1. 🏙️ 圣路易斯 🇺🇸 美国Spring river flooding · 4月1日 – 6月30日（通常）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. 🏙️ 德累斯顿市 🇩🇪 德国Elbe high water · 2月15日 – 6月15日（通常）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. 🏙️ 弗罗茨瓦夫 🇵🇱 波兰Odra high water · 3月1日 – 7月31日（通常）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. 🏞️ 瓜達盧普山國家公園 🇺🇸 美国Monsoon storms and flash floods · 5月15日 – 9月30日（通常）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. 🏙️ 温尼伯 🇨🇦 加拿大Red River flood season · 4月1日 – 5月10日（通常）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. 🏙️ 帕拉蒂 🇧🇷 巴西Sea into the streets · 1月1日 – 12月31日The colonial centre was laid below the spring-tide line on purpose, so around the full and new moons the sea comes up through the seawall openings and drains back out, taking the day's dirt with it.77
7. 🏙️ 布琼布拉 🇧🇮 布隆迪Long rains and flooding · 2月1日 – 5月31日（通常）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. 🏞️ 杰弗逊国土扩张纪念碑 🇺🇸 美国Mississippi spring flood · 3月15日 – 6月30日（通常）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. 🏙️ 圣安东尼奥 🇺🇸 美国Flash flood season · 5月1日 – 6月15日（通常）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. 🏙️ 朱巴 🇸🇸 南苏丹Rainy-season road cuts · 5月15日 – 10月31日（通常）Juba's own streets stay passable, but the dirt roads beyond turn to deep mud and floodwater, cutting off towns for weeks.68
11. 🏙️ 布拉柴维尔 🇨🇬 刚果共和国Storm flooding and gullies · 2月15日 – 5月15日（通常）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. 🏙️ 洛美 🇹🇬 多哥Long-rains street flooding · 4月1日 – 6月30日（通常）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. 🏙️ 科托努 🇧🇯 贝宁Rainy-season flooding · 4月15日 – 7月31日（通常）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. 🏙️ 拉各斯 🇳🇬 尼日利亚Flash-flood season · 5月1日 – 7月20日（通常）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. 🏙️ 海岸角 🇬🇭 加纳Major rainy season floods · 5月15日 – 7月15日（通常）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. 🏙️ 阿比让 🇨🇮 科特迪瓦Rainy-season flash floods · 5月15日 – 7月15日（通常）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. 🏙️ 桂林市 🇨🇳 中华人民共和国Li River flood closures · 5月15日 – 7月31日（通常）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. 🥾 万荣 🇱🇦 老挝Fast, muddy Nam Song · 5月15日 – 10月15日（通常）In the rains the river runs high, brown and fast; tubing and kayaking get genuinely risky after heavy downpours.52
19. 🥾 法兰士·约瑟夫冰川 🇳🇿 新西兰Highway closures in heavy rain · 1月1日 – 12月31日There is one road in and one road out, and a big West Coast rain event closes it north or south of the village a few times a year.50
20. 🏙️ 巴兰基亚 🇨🇴 哥伦比亚Arroyos in the streets · 5月1日 – 11月15日（通常）The city drains its downpours down the roads, and within minutes certain streets carry a current that will move a car.49
21. 🏙️ 乔治敦 🇬🇾 圭亚那Flooding in the city · 5月1日 – 7月31日（通常）Georgetown lies below sea level and drains through canals and kokers that only open at low tide.47
22. 🏙️ 锡尔赫特 🇧🇩 孟加拉国Flash-flood season · 5月15日 – 9月30日（通常）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

5月全世界有什么活动 →

1. 🏙️ 德累斯顿市 🇩🇪 德国Elbe high water · 2月15日 – 6月15日（通常）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. 🏙️ 弗罗茨瓦夫 🇵🇱 波兰Odra high water · 3月1日 – 7月31日（通常）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. 🏙️ 帕拉蒂 🇧🇷 巴西Sea into the streets · 1月1日 – 12月31日The colonial centre was laid below the spring-tide line on purpose, so around the full and new moons the sea comes up through the seawall openings and drains back out, taking the day's dirt with it.82
4. 🏞️ 瓜達盧普山國家公園 🇺🇸 美国Monsoon storms and flash floods · 5月15日 – 9月30日（通常）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. 🏙️ 圣路易斯 🇺🇸 美国Spring river flooding · 4月1日 – 6月30日（通常）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. 🏞️ 巨人柱國家公園 🇺🇸 美国Monsoon season · 6月15日 – 9月30日From the middle of June to the end of September the afternoons build storms over the mountains, and the washes and canyons flash-flood fast enough to catch people out.71
7. 🏙️ 朱巴 🇸🇸 南苏丹Rainy-season road cuts · 5月15日 – 10月31日（通常）Juba's own streets stay passable, but the dirt roads beyond turn to deep mud and floodwater, cutting off towns for weeks.71
8. 🏙️ 亚的斯亚贝巴 🇪🇹 埃塞俄比亚Kiremt rains flood the roads · 6月20日 – 9月15日（通常）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. 🏞️ 杰弗逊国土扩张纪念碑 🇺🇸 美国Mississippi spring flood · 3月15日 – 6月30日（通常）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. 🏙️ 圣安东尼奥 🇺🇸 美国Flash flood season · 5月1日 – 6月15日（通常）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. 🏙️ 洛美 🇹🇬 多哥Long-rains street flooding · 4月1日 – 6月30日（通常）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. 🏙️ 普那卡 🇧🇹 不丹Glacial flood risk on the rivers · 6月1日 – 10月15日（通常）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. 🏙️ 海岸角 🇬🇭 加纳Major rainy season floods · 5月15日 – 7月15日（通常）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. 🏙️ 科托努 🇧🇯 贝宁Rainy-season flooding · 4月15日 – 7月31日（通常）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. 🏙️ 重庆市 🇨🇳 中华人民共和国Yangtze flood season · 6月15日 – 9月5日（通常）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. 🏙️ 马尼拉 🇵🇭 菲律宾Habagat and street flooding · 6月1日 – 10月15日（通常）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. 🥾 法兰士·约瑟夫冰川 🇳🇿 新西兰Highway closures in heavy rain · 1月1日 – 12月31日There is one road in and one road out, and a big West Coast rain event closes it north or south of the village a few times a year.53
18. 🏙️ 蒙罗维亚 🇱🇷 利比里亚Flooded streets in the rains · 6月1日 – 9月30日（通常）Heavy downpours overwhelm the drains in low-lying neighbourhoods, turning main roads into rivers and stalling traffic for hours.51
19. 🏙️ 阿比让 🇨🇮 科特迪瓦Rainy-season flash floods · 5月15日 – 7月15日（通常）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. 🏙️ 巴兰基亚 🇨🇴 哥伦比亚Arroyos in the streets · 5月1日 – 11月15日（通常）The city drains its downpours down the roads, and within minutes certain streets carry a current that will move a car.50
21. 🏙️ 拉各斯 🇳🇬 尼日利亚Flash-flood season · 5月1日 – 7月20日（通常）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. 🏙️ 科纳克里 🇬🇳 几内亚Rainy season floods · 6月20日 – 9月15日（通常）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. 🏙️ 乔治敦 🇬🇾 圭亚那Flooding in the city · 5月1日 – 7月31日（通常）Georgetown lies below sea level and drains through canals and kokers that only open at low tide.48
24. 🏙️ 桂林市 🇨🇳 中华人民共和国Li River flood closures · 5月15日 – 7月31日（通常）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. 🥾 万荣 🇱🇦 老挝Fast, muddy Nam Song · 5月15日 – 10月15日（通常）In the rains the river runs high, brown and fast; tubing and kayaking get genuinely risky after heavy downpours.42

……6月还有 2 个。

6月全世界有什么活动 →

1. 🏙️ 弗罗茨瓦夫 🇵🇱 波兰Odra high water · 3月1日 – 7月31日（通常）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. 🏙️ 帕拉蒂 🇧🇷 巴西Sea into the streets · 1月1日 – 12月31日The colonial centre was laid below the spring-tide line on purpose, so around the full and new moons the sea comes up through the seawall openings and drains back out, taking the day's dirt with it.87
3. 🏞️ 瓜達盧普山國家公園 🇺🇸 美国Monsoon storms and flash floods · 5月15日 – 9月30日（通常）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. 🏙️ 海岸角 🇬🇭 加纳Major rainy season floods · 5月15日 – 7月15日（通常）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. 🏞️ 圆顶礁国家公园 🇺🇸 美国Monsoon flash floods · 7月1日 – 9月20日（通常）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. 🏞️ 大彎曲國家公園 🇺🇸 美国Monsoon flash floods · 7月1日 – 9月30日（通常）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. 🏙️ 朱巴 🇸🇸 南苏丹Rainy-season road cuts · 5月15日 – 10月31日（通常）Juba's own streets stay passable, but the dirt roads beyond turn to deep mud and floodwater, cutting off towns for weeks.72
8. 🏞️ 錫安國家公園 🇺🇸 美国Monsoon flash floods · 7月1日 – 9月20日（通常）Late-summer storms over the plateau put water into slot canyons under blue sky downstream.71
9. 🏙️ 阿比让 🇨🇮 科特迪瓦Rainy-season flash floods · 5月15日 – 7月15日（通常）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. 🏙️ 蒙特雷 🇲🇽 墨西哥Tropical rain and flooding · 7月1日 – 10月15日（通常）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. 🏙️ 圣路易 🇸🇳 塞内加尔Senegal River flood season · 7月15日 – 10月31日（通常）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. 🏞️ 死亡谷国家公园 🇺🇸 美国Monsoon flash floods · 7月15日 – 9月30日（通常）Late summer storms tear out the unpaved canyon roads most years, and some stay shut for months afterwards.68
13. 🏞️ 卡尔斯巴德洞窟国家公园 🇺🇸 美国Monsoon flash floods · 7月1日 – 9月20日（通常）Afternoon storms come off the Guadalupe escarpment and put water across Walnut Canyon Desert Drive and the road up from Whites City.68
14. 🏞️ 巨人柱國家公園 🇺🇸 美国Monsoon season · 6月15日 – 9月30日From the middle of June to the end of September the afternoons build storms over the mountains, and the washes and canyons flash-flood fast enough to catch people out.67
15. 🏙️ 科托努 🇧🇯 贝宁Rainy-season flooding · 4月15日 – 7月31日（通常）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. 🏙️ 尼亚美 🇳🇪 尼日尔Niger river flooding · 7月15日 – 9月30日（通常）Storm runoff and then the river rise put whole neighbourhoods on the right bank under water most years.64
17. 🏙️ 亚的斯亚贝巴 🇪🇹 埃塞俄比亚Kiremt rains flood the roads · 6月20日 – 9月15日（通常）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. 🏞️ 峽谷地國家公園 🇺🇸 美国Monsoon flash floods · 7月1日 – 9月20日（通常）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. 🏙️ 拉各斯 🇳🇬 尼日利亚Flash-flood season · 5月1日 – 7月20日（通常）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. 🏙️ 亨比 🇮🇳 印度Tungabhadra dam releases · 7月15日 – 9月30日（通常）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. 🏞️ 拱门国家公园 🇺🇸 美国Monsoon flash floods · 7月15日 – 9月15日（通常）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. 🏙️ 阿布贾 🇳🇬 尼日利亚Flash floods · 7月1日 – 9月30日（通常）The heaviest downpours of the rainy season regularly flood parts of the city, including Wuse 2, Lokogoma and Gwagwalada.59
23. 🏙️ 巴兰基亚 🇨🇴 哥伦比亚Arroyos in the streets · 5月1日 – 11月15日（通常）The city drains its downpours down the roads, and within minutes certain streets carry a current that will move a car.59
24. 🏙️ 卡拉奇 🇵🇰 巴基斯坦Urban flooding · 7月1日 – 8月31日（通常）A single heavy spell puts the underpasses and half the main arteries under water and takes the grid down with them.56
25. 🏙️ 乔治敦 🇬🇾 圭亚那Flooding in the city · 5月1日 – 7月31日（通常）Georgetown lies below sea level and drains through canals and kokers that only open at low tide.55

……7月还有 19 个。

7月全世界有什么活动 →

1. 🏙️ 帕拉蒂 🇧🇷 巴西Sea into the streets · 1月1日 – 12月31日The colonial centre was laid below the spring-tide line on purpose, so around the full and new moons the sea comes up through the seawall openings and drains back out, taking the day's dirt with it.81
2. 🏞️ 瓜達盧普山國家公園 🇺🇸 美国Monsoon storms and flash floods · 5月15日 – 9月30日（通常）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. 🏞️ 圆顶礁国家公园 🇺🇸 美国Monsoon flash floods · 7月1日 – 9月20日（通常）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. 🏞️ 錫安國家公園 🇺🇸 美国Monsoon flash floods · 7月1日 – 9月20日（通常）Late-summer storms over the plateau put water into slot canyons under blue sky downstream.75
5. 🏞️ 大彎曲國家公園 🇺🇸 美国Monsoon flash floods · 7月1日 – 9月30日（通常）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. 🏙️ 蒙特雷 🇲🇽 墨西哥Tropical rain and flooding · 7月1日 – 10月15日（通常）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. 🏞️ 死亡谷国家公园 🇺🇸 美国Monsoon flash floods · 7月15日 – 9月30日（通常）Late summer storms tear out the unpaved canyon roads most years, and some stay shut for months afterwards.71
8. 🏙️ 朱巴 🇸🇸 南苏丹Rainy-season road cuts · 5月15日 – 10月31日（通常）Juba's own streets stay passable, but the dirt roads beyond turn to deep mud and floodwater, cutting off towns for weeks.71
9. 🏞️ 巨人柱國家公園 🇺🇸 美国Monsoon season · 6月15日 – 9月30日From the middle of June to the end of September the afternoons build storms over the mountains, and the washes and canyons flash-flood fast enough to catch people out.70
10. 🏞️ 峽谷地國家公園 🇺🇸 美国Monsoon flash floods · 7月1日 – 9月20日（通常）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. 🏙️ 努瓦克肖特 🇲🇷 毛里塔尼亚Flooded districts after storms · 8月1日 – 9月30日（通常）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. 🏞️ 拱门国家公园 🇺🇸 美国Monsoon flash floods · 7月15日 – 9月15日（通常）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. 🏞️ 卡尔斯巴德洞窟国家公园 🇺🇸 美国Monsoon flash floods · 7月1日 – 9月20日（通常）Afternoon storms come off the Guadalupe escarpment and put water across Walnut Canyon Desert Drive and the road up from Whites City.67
14. 🏙️ 亨比 🇮🇳 印度Tungabhadra dam releases · 7月15日 – 9月30日（通常）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. 🏙️ 圣路易 🇸🇳 塞内加尔Senegal River flood season · 7月15日 – 10月31日（通常）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. 🏙️ 亚的斯亚贝巴 🇪🇹 埃塞俄比亚Kiremt rains flood the roads · 6月20日 – 9月15日（通常）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. 🏙️ 尼亚美 🇳🇪 尼日尔Niger river flooding · 7月15日 – 9月30日（通常）Storm runoff and then the river rise put whole neighbourhoods on the right bank under water most years.63
18. 🥾 摩押 🇺🇸 美国Monsoon flash floods · 7月10日 – 9月15日（通常）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. 🏙️ 卡拉奇 🇵🇰 巴基斯坦Urban flooding · 7月1日 – 8月31日（通常）A single heavy spell puts the underpasses and half the main arteries under water and takes the grid down with them.60
20. 🏙️ 伊斯兰堡 🇵🇰 巴基斯坦Nullah flooding · 7月1日 – 8月31日（通常）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. 🏙️ 普那卡 🇧🇹 不丹Glacial flood risk on the rivers · 6月1日 – 10月15日（通常）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. 🏙️ 阿布贾 🇳🇬 尼日利亚Flash floods · 7月1日 – 9月30日（通常）The heaviest downpours of the rainy season regularly flood parts of the city, including Wuse 2, Lokogoma and Gwagwalada.53
23. 🏙️ 蒙罗维亚 🇱🇷 利比里亚Flooded streets in the rains · 6月1日 – 9月30日（通常）Heavy downpours overwhelm the drains in low-lying neighbourhoods, turning main roads into rivers and stalling traffic for hours.53
24. 🏙️ 巴兰基亚 🇨🇴 哥伦比亚Arroyos in the streets · 5月1日 – 11月15日（通常）The city drains its downpours down the roads, and within minutes certain streets carry a current that will move a car.53
25. 🥾 法兰士·约瑟夫冰川 🇳🇿 新西兰Highway closures in heavy rain · 1月1日 – 12月31日There is one road in and one road out, and a big West Coast rain event closes it north or south of the village a few times a year.52

……8月还有 14 个。

8月全世界有什么活动 →

1. 🏙️ 阿维尼翁 🇫🇷 法国Autumn flash floods · 9月10日 – 11月30日（通常）Mediterranean downpours can drop months of rain in a few hours on the Vaucluse and Gard in autumn.89
2. 🏖️ 马拉加 🇪🇸 西班牙Autumn storms and flash floods · 9月1日 – 11月30日（通常）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. 🏙️ 热那亚 🇮🇹 意大利Autumn flash floods · 9月15日 – 11月30日Warm sea and steep hills behind a narrow city produce autumn storms that drop a month of rain in hours.85
4. 🏞️ 瓜達盧普山國家公園 🇺🇸 美国Monsoon storms and flash floods · 5月15日 – 9月30日（通常）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. 🏙️ 汉堡 🇩🇪 德国Storm surge season · 9月15日 – 3月31日The city counts its storm tide season from mid-September to the end of March.82
6. 🏞️ 圆顶礁国家公园 🇺🇸 美国Monsoon flash floods · 7月1日 – 9月20日（通常）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. 🏙️ 巴伦西亚 🇪🇸 西班牙Gota fria and DANA storms · 9月1日 – 11月15日Autumn is when a cut-off low over a warm Mediterranean can drop a season's rain on the coastal plain in hours.80
8. 🏞️ 錫安國家公園 🇺🇸 美国Monsoon flash floods · 7月1日 – 9月20日（通常）Late-summer storms over the plateau put water into slot canyons under blue sky downstream.80
9. 🥾 摩押 🇺🇸 美国Monsoon flash floods · 7月10日 – 9月15日（通常）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. 🏞️ 死亡谷国家公园 🇺🇸 美国Monsoon flash floods · 7月15日 – 9月30日（通常）Late summer storms tear out the unpaved canyon roads most years, and some stay shut for months afterwards.79
11. 🏖️ 阿利坎特 🇪🇸 西班牙Gota fria storms · 9月1日 – 11月15日（通常）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. 🏖️ 贝尼多尔姆 🇪🇸 西班牙Gota fria storms · 9月1日 – 11月15日（通常）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. 🏞️ 拱门国家公园 🇺🇸 美国Monsoon flash floods · 7月15日 – 9月15日（通常）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. 🏞️ 峽谷地國家公園 🇺🇸 美国Monsoon flash floods · 7月1日 – 9月20日（通常）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. 🏞️ 大彎曲國家公園 🇺🇸 美国Monsoon flash floods · 7月1日 – 9月30日（通常）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. 🏞️ 卡尔斯巴德洞窟国家公园 🇺🇸 美国Monsoon flash floods · 7月1日 – 9月20日（通常）Afternoon storms come off the Guadalupe escarpment and put water across Walnut Canyon Desert Drive and the road up from Whites City.76
17. 🏞️ 巨人柱國家公園 🇺🇸 美国Monsoon season · 6月15日 – 9月30日From the middle of June to the end of September the afternoons build storms over the mountains, and the washes and canyons flash-flood fast enough to catch people out.75
18. 🏙️ 帕拉蒂 🇧🇷 巴西Sea into the streets · 1月1日 – 12月31日The colonial centre was laid below the spring-tide line on purpose, so around the full and new moons the sea comes up through the seawall openings and drains back out, taking the day's dirt with it.75
19. 🏙️ 蒙特雷 🇲🇽 墨西哥Tropical rain and flooding · 7月1日 – 10月15日（通常）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. 🏙️ 朱巴 🇸🇸 南苏丹Rainy-season road cuts · 5月15日 – 10月31日（通常）Juba's own streets stay passable, but the dirt roads beyond turn to deep mud and floodwater, cutting off towns for weeks.72
21. 🏙️ 查尔斯顿 🇺🇸 美国King tide flooding · 9月1日 – 11月15日（通常）The highest autumn tides put salt water over the Battery and into the lower peninsula streets on clear days, no storm required.69
22. 🏙️ 亨比 🇮🇳 印度Tungabhadra dam releases · 7月15日 – 9月30日（通常）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. 🏙️ 亚的斯亚贝巴 🇪🇹 埃塞俄比亚Kiremt rains flood the roads · 6月20日 – 9月15日（通常）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. 🏙️ 尼亚美 🇳🇪 尼日尔Niger river flooding · 7月15日 – 9月30日（通常）Storm runoff and then the river rise put whole neighbourhoods on the right bank under water most years.66
25. 🏙️ 雅温得 🇨🇲 喀麦隆Flash-flood season · 9月1日 – 10月31日（通常）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

……9月还有 27 个。

9月全世界有什么活动 →

1. 🏖️ 马拉加 🇪🇸 西班牙Autumn storms and flash floods · 9月1日 – 11月30日（通常）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. 🏖️ 阿利坎特 🇪🇸 西班牙Gota fria storms · 9月1日 – 11月15日（通常）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. 🏖️ 贝尼多尔姆 🇪🇸 西班牙Gota fria storms · 9月1日 – 11月15日（通常）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. 🏙️ 巴伦西亚 🇪🇸 西班牙Gota fria and DANA storms · 9月1日 – 11月15日Autumn is when a cut-off low over a warm Mediterranean can drop a season's rain on the coastal plain in hours.88
5. 🏙️ 查尔斯顿 🇺🇸 美国King tide flooding · 9月1日 – 11月15日（通常）The highest autumn tides put salt water over the Battery and into the lower peninsula streets on clear days, no storm required.85
6. 🏙️ 蒙特雷 🇲🇽 墨西哥Tropical rain and flooding · 7月1日 – 10月15日（通常）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. 🏙️ 阿维尼翁 🇫🇷 法国Autumn flash floods · 9月10日 – 11月30日（通常）Mediterranean downpours can drop months of rain in a few hours on the Vaucluse and Gard in autumn.81
8. 🏙️ 威尼斯 🇮🇹 意大利Acqua alta season · 10月1日 – 1月15日（通常）High water comes with the autumn tides.79
9. 🏖️ 达哈卜 🇪🇬 埃及Sinai flash floods · 10月15日 – 3月15日（通常）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. 🏙️ 热那亚 🇮🇹 意大利Autumn flash floods · 9月15日 – 11月30日Warm sea and steep hills behind a narrow city produce autumn storms that drop a month of rain in hours.76
11. 🏙️ 科莫 🇮🇹 意大利Lake floods the lakefront · 10月1日 – 12月15日（通常）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. 🏙️ 普那卡 🇧🇹 不丹Glacial flood risk on the rivers · 6月1日 – 10月15日（通常）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. 🏖️ 五渔村 🇮🇹 意大利Autumn storm trail closures · 10月1日 – 11月30日（通常）Autumn brings the downpours that flattened Vernazza and Monterosso in 2011.73
14. 🏖️ 亚喀巴 🇯🇴 约旦Wadi flash-flood season · 10月15日 – 3月31日（通常）Rain over the mountains behind town runs off bare rock and crosses the roads out to Wadi Rum and the Dead Sea.72
15. 🏙️ 汉堡 🇩🇪 德国Storm surge season · 9月15日 – 3月31日The city counts its storm tide season from mid-September to the end of March.69
16. 🏙️ 巴格达 🇮🇶 伊拉克Street flooding in the first rains · 10月25日 – 1月31日（通常）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. 🏙️ 朱巴 🇸🇸 南苏丹Rainy-season road cuts · 5月15日 – 10月31日（通常）Juba's own streets stay passable, but the dirt roads beyond turn to deep mud and floodwater, cutting off towns for weeks.69
18. 🏖️ 迈阿密 🇺🇸 美国King tide flooding · 9月1日 – 11月15日（通常）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. 🥾 万荣 🇱🇦 老挝Fast, muddy Nam Song · 5月15日 – 10月15日（通常）In the rains the river runs high, brown and fast; tubing and kayaking get genuinely risky after heavy downpours.63
20. 🏙️ 班吉 🇨🇫 中非共和国Ubangi River flood season · 10月1日 – 11月30日（通常）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. 🏙️ 帕拉蒂 🇧🇷 巴西Sea into the streets · 1月1日 – 12月31日The colonial centre was laid below the spring-tide line on purpose, so around the full and new moons the sea comes up through the seawall openings and drains back out, taking the day's dirt with it.63
22. 🏙️ 圣路易 🇸🇳 塞内加尔Senegal River flood season · 7月15日 – 10月31日（通常）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. 🏙️ 科托努 🇧🇯 贝宁Oueme river flood · 9月1日 – 10月31日（通常）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. 🏙️ 雅温得 🇨🇲 喀麦隆Flash-flood season · 9月1日 – 10月31日（通常）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. 🏙️ 阿瑜陀耶 🇹🇭 泰国Flood season on the rivers · 9月1日 – 11月15日（通常）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

……10月还有 9 个。

10月全世界有什么活动 →

1. 🏙️ 亚历山大 🇪🇬 埃及Winter storms off the sea · 11月15日 – 3月15日（通常）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. 🏙️ 佩特拉 🇯🇴 约旦Flash-flood closures · 11月1日 – 3月31日The 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. 🏙️ 巴格达 🇮🇶 伊拉克Street flooding in the first rains · 10月25日 – 1月31日（通常）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. 🏖️ 阿利坎特 🇪🇸 西班牙Gota fria storms · 9月1日 – 11月15日（通常）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. 🏖️ 马拉加 🇪🇸 西班牙Autumn storms and flash floods · 9月1日 – 11月30日（通常）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. 🏖️ 贝尼多尔姆 🇪🇸 西班牙Gota fria storms · 9月1日 – 11月15日（通常）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. 🥾 拉姆干谷 🇯🇴 约旦Flash floods in the wadis · 11月1日 – 3月31日（通常）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. 🏙️ 查尔斯顿 🇺🇸 美国King tide flooding · 9月1日 – 11月15日（通常）The highest autumn tides put salt water over the Battery and into the lower peninsula streets on clear days, no storm required.86
9. 🏖️ 达哈卜 🇪🇬 埃及Sinai flash floods · 10月15日 – 3月15日（通常）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. 🏖️ 死海 🇯🇴 约旦Wadi flash-flood season · 11月1日 – 3月31日Rain 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. 🏙️ 巴伦西亚 🇪🇸 西班牙Gota fria and DANA storms · 9月1日 – 11月15日Autumn is when a cut-off low over a warm Mediterranean can drop a season's rain on the coastal plain in hours.85
12. 🏖️ 亚喀巴 🇯🇴 约旦Wadi flash-flood season · 10月15日 – 3月31日（通常）Rain over the mountains behind town runs off bare rock and crosses the roads out to Wadi Rum and the Dead Sea.83
13. 🏙️ 麦加 🇸🇦 沙特阿拉伯Winter flash floods · 11月1日 – 1月31日（通常）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. 🏖️ 迈阿密 🇺🇸 美国King tide flooding · 9月1日 – 11月15日（通常）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. 🏙️ 班吉 🇨🇫 中非共和国Ubangi River flood season · 10月1日 – 11月30日（通常）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. 🏙️ 阿瑜陀耶 🇹🇭 泰国Flood season on the rivers · 9月1日 – 11月15日（通常）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. 🏙️ 阿维尼翁 🇫🇷 法国Autumn flash floods · 9月10日 – 11月30日（通常）Mediterranean downpours can drop months of rain in a few hours on the Vaucluse and Gard in autumn.70
18. 🏙️ 热那亚 🇮🇹 意大利Autumn flash floods · 9月15日 – 11月30日Warm sea and steep hills behind a narrow city produce autumn storms that drop a month of rain in hours.67
19. 🏖️ 五渔村 🇮🇹 意大利Autumn storm trail closures · 10月1日 – 11月30日（通常）Autumn brings the downpours that flattened Vernazza and Monterosso in 2011.67
20. 🏙️ 曼谷 🇹🇭 泰国Chao Phraya flood season · 9月15日 – 11月15日（通常）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. 🏙️ 科莫 🇮🇹 意大利Lake floods the lakefront · 10月1日 – 12月15日（通常）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. 🏙️ 威尼斯 🇮🇹 意大利Acqua alta season · 10月1日 – 1月15日（通常）High water comes with the autumn tides.63
23. 🏞️ 伊瓜蘇港 🇦🇷 阿根廷Garganta walkway shut in flood · 11月1日 – 4月30日（通常）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. 🏞️ 伊瓜苏 🇧🇷 巴西Devil's Throat walkway shut · 11月1日 – 4月30日（通常）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. 🏙️ 帕拉蒂 🇧🇷 巴西Sea into the streets · 1月1日 – 12月31日The colonial centre was laid below the spring-tide line on purpose, so around the full and new moons the sea comes up through the seawall openings and drains back out, taking the day's dirt with it.62

……11月还有 11 个。

11月全世界有什么活动 →

1. 🏖️ 亚喀巴 🇯🇴 约旦Wadi flash-flood season · 10月15日 – 3月31日（通常）Rain over the mountains behind town runs off bare rock and crosses the roads out to Wadi Rum and the Dead Sea.93
2. 🏙️ 卡法亞特 🇦🇷 阿根廷Summer storm road closures · 12月15日 – 3月15日（通常）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. 🏖️ 达哈卜 🇪🇬 埃及Sinai flash floods · 10月15日 – 3月15日（通常）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. 🏙️ 亚历山大 🇪🇬 埃及Winter storms off the sea · 11月15日 – 3月15日（通常）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. 🏖️ 死海 🇯🇴 约旦Wadi flash-flood season · 11月1日 – 3月31日Rain 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. 🏖️ 富查伊拉 🇦🇪 阿拉伯联合酋长国Winter rain and wadi floods · 12月1日 – 3月31日（通常）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. 🏙️ 麦加 🇸🇦 沙特阿拉伯Winter flash floods · 11月1日 – 1月31日（通常）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. 🏙️ 佩特拉 🇯🇴 约旦Flash-flood closures · 11月1日 – 3月31日The 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. 🥾 拉姆干谷 🇯🇴 约旦Flash floods in the wadis · 11月1日 – 3月31日（通常）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. 🏙️ 哈拉雷 🇿🇼 津巴布韦Flash floods in the heavy rains · 12月1日 – 3月15日（通常）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. 🏙️ 巴格达 🇮🇶 伊拉克Street flooding in the first rains · 10月25日 – 1月31日（通常）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. 🏙️ 哈博罗内 🇧🇼 博茨瓦纳Summer flash floods · 12月1日 – 3月15日（通常）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. 🏙️ 圣保罗 🇧🇷 巴西Summer storms and flooding · 12月1日 – 3月31日（通常）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. 🏙️ 胡志明市 🇻🇳 越南Peak tide flooding · 9月15日 – 12月15日（通常）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. 🏙️ 卢萨卡 🇿🇲 赞比亚Rainy-season flooding · 12月1日 – 3月31日（通常）Poor drainage and dense informal settlements mean heavy rains regularly submerge roads and low-lying suburbs each rainy season.69
16. 🏙️ 科英布拉 🇵🇹 葡萄牙Mondego river floods · 12月15日 – 3月15日（通常）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. 🏙️ 萨尔塔 🇦🇷 阿根廷Summer rain closes the mountain roads · 12月15日 – 3月15日（通常）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. 🥾 法兰士·约瑟夫冰川 🇳🇿 新西兰Highway closures in heavy rain · 1月1日 – 12月31日There is one road in and one road out, and a big West Coast rain event closes it north or south of the village a few times a year.64
19. 🏙️ 科莫 🇮🇹 意大利Lake floods the lakefront · 10月1日 – 12月15日（通常）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. 🏞️ 峰牙-己榜國家公園 🇻🇳 越南Flood closures in the caves · 9月1日 – 12月15日（通常）The wet months put the Son and Chay rivers up through the show caves and the big expeditions stop entirely.61
21. 🏞️ 乌鲁汝 🇦🇺 澳大利亚Summer storms and waterfalls · 12月1日 – 3月15日（通常）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. 🏞️ 康加里国家公园 🇺🇸 美国Floodwater on the boardwalk · 12月1日 – 4月30日（通常）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. 🏙️ 布拉柴维尔 🇨🇬 刚果共和国Congo River flood season · 11月15日 – 1月31日（通常）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. 🏙️ 威尼斯 🇮🇹 意大利Acqua alta season · 10月1日 – 1月15日（通常）High water comes with the autumn tides.58
25. 🏙️ 顺化市 🇻🇳 越南Flood season · 9月25日 – 12月15日（通常）Hue is the wettest city in the country and the Perfume River comes up into the low streets most years, sometimes for days.57

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