洪水季：全世界逐月一覽

1. 🏖️ 富查伊拉 🇦🇪 阿拉伯聯合大公國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. 🏖️ Dahab 🇪🇬 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. 🏙️ 麥加 🇸🇦 沙烏地阿拉伯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. 🏖️ 亞喀巴 🇯🇴 約旦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. 🏙️ 特魯希略 🇵🇪 秘魯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. 🏙️ 亞歷山卓 🇪🇬 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 🇯🇴 約旦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 🇵🇪 秘魯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 🇯🇴 約旦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. 🥾 瓦地倫 🇯🇴 約旦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. 🏙️ 嘉柏隆里 🇧🇼 波札那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. 🏙️ 巴格達 🇮🇶 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 🇿🇼 辛巴威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. 🥾 法蘭士·約瑟夫冰川 🇳🇿 紐西蘭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. 🏙️ 布拉柴維爾 🇨🇬 剛果共和國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. 🏙️ 聖保羅 🇧🇷 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. 🏙️ 薩爾塔 🇦🇷 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. 🏙️ 路沙卡 🇿🇲 尚比亞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. 🥾 阿瓜斯卡連特斯 🇵🇪 秘魯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 🇮🇹 義大利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 🇺🇸 美國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. 🏝️ 馬久羅 🇲🇭 馬紹爾群島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 🇰🇮 吉里巴斯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月還有 15 個。

1月全世界有什麼活動 →

1. 🏖️ 亞喀巴 🇯🇴 約旦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. 🏖️ Dahab 🇪🇬 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 🇯🇴 約旦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. 🏙️ 亞歷山卓 🇪🇬 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 🇦🇪 阿拉伯聯合大公國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 🇯🇴 約旦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. 🏙️ 特魯希略 🇵🇪 秘魯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 🇵🇪 秘魯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. 🥾 瓦地倫 🇯🇴 約旦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 🇿🇼 辛巴威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 🇧🇮 蒲隆地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. 🏙️ 嘉柏隆里 🇧🇼 波札那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. 🥾 法蘭士·約瑟夫冰川 🇳🇿 紐西蘭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. 🏙️ 路沙卡 🇿🇲 尚比亞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. 🏙️ 聖保羅 🇧🇷 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. 🏙️ 薩爾塔 🇦🇷 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 🇺🇸 美國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. 🏙️ 布拉柴維爾 🇨🇬 剛果共和國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 🇰🇮 吉里巴斯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 🇬🇧 英國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. 🏝️ 馬久羅 🇲🇭 馬紹爾群島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. 🏙️ 約克 🇬🇧 英國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. 🥾 阿瓜斯卡連特斯 🇵🇪 秘魯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月還有 15 個。

2月全世界有什麼活動 →

1. 🏖️ 死海 🇯🇴 約旦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. 🏙️ 亞歷山卓 🇪🇬 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. 🏖️ Dahab 🇪🇬 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 🇯🇴 約旦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. 🏖️ 亞喀巴 🇯🇴 約旦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 🇿🇼 辛巴威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. 🥾 瓦地倫 🇯🇴 約旦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. 🏙️ 嘉柏隆里 🇧🇼 波札那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 🇦🇪 阿拉伯聯合大公國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 🇵🇪 秘魯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. 🏙️ 路沙卡 🇿🇲 尚比亞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. 🏙️ 特魯希略 🇵🇪 秘魯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. 🏙️ 布達佩斯 🇭🇺 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 🇺🇸 美國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 🇧🇮 蒲隆地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. 🏙️ 聖保羅 🇧🇷 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. 🏙️ 德累斯頓市 🇩🇪 德國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. 🏙️ 薩爾塔 🇦🇷 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. 🏞️ 烏魯汝 🇦🇺 澳大利亞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 🇩🇪 德國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. 🏙️ 弗羅茨瓦夫 🇵🇱 波蘭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. 🥾 法蘭士·約瑟夫冰川 🇳🇿 紐西蘭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 🇺🇸 美國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月還有 14 個。

3月全世界有什麼活動 →

1. 🏙️ 布達佩斯 🇭🇺 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. 🏙️ 特魯希略 🇵🇪 秘魯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. 🏙️ 聖路易斯 🇺🇸 美國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. 🏙️ 德累斯頓市 🇩🇪 德國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. 🏙️ 弗羅茨瓦夫 🇵🇱 波蘭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 🇺🇸 美國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 🇺🇸 美國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. 🏞️ 傑弗遜國土擴張紀念碑 🇺🇸 美國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. 🏙️ 溫尼伯 🇨🇦 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. 🏙️ 柯多努 🇧🇯 貝南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 🇧🇮 蒲隆地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. 🏞️ 伊瓜蘇 🇧🇷 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. 🥾 法蘭士·約瑟夫冰川 🇳🇿 紐西蘭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. 🏙️ 布拉柴維爾 🇨🇬 剛果共和國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. 🏙️ 貝倫 🇧🇷 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. 🏙️ 瓜亞基爾 🇪🇨 厄瓜多爾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月全世界有什麼活動 →

1. 🏙️ 聖路易斯 🇺🇸 美國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. 🏙️ 德累斯頓市 🇩🇪 德國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. 🏙️ 弗羅茨瓦夫 🇵🇱 波蘭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 🇺🇸 美國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. 🏙️ 溫尼伯 🇨🇦 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 🇧🇮 蒲隆地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. 🏞️ 傑弗遜國土擴張紀念碑 🇺🇸 美國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. 🏙️ 聖安東尼奧 🇺🇸 美國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 🇸🇸 南蘇丹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. 🏙️ 布拉柴維爾 🇨🇬 剛果共和國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. 🏙️ 柯多努 🇧🇯 貝南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. 🏙️ 拉哥斯 🇳🇬 奈及利亞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 🇬🇭 迦納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. 🏙️ 阿必尚 🇨🇮 象牙海岸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 🇨🇳 中華人民共和國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. 🥾 萬榮 🇱🇦 寮國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. 🥾 法蘭士·約瑟夫冰川 🇳🇿 紐西蘭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. 🏙️ 巴蘭幾亞 🇨🇴 哥倫比亞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 🇬🇾 圭亞那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. 🏙️ 錫爾赫特 🇧🇩 孟加拉國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月全世界有什麼活動 →

1. 🏙️ 德累斯頓市 🇩🇪 德國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. 🏙️ 弗羅茨瓦夫 🇵🇱 波蘭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 🇺🇸 美國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. 🏙️ 聖路易斯 🇺🇸 美國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 🇺🇸 美國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 🇸🇸 南蘇丹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. 🏙️ 阿迪斯阿貝巴 🇪🇹 衣索比亞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. 🏞️ 傑弗遜國土擴張紀念碑 🇺🇸 美國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. 🏙️ 聖安東尼奧 🇺🇸 美國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 🇬🇭 迦納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. 🏙️ 柯多努 🇧🇯 貝南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. 🏙️ 重慶市 🇨🇳 中華人民共和國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. 🏙️ 馬尼拉 🇵🇭 菲律賓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. 🥾 法蘭士·約瑟夫冰川 🇳🇿 紐西蘭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. 🏙️ 蒙羅維亞 🇱🇷 賴比瑞亞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. 🏙️ 阿必尚 🇨🇮 象牙海岸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. 🏙️ 巴蘭幾亞 🇨🇴 哥倫比亞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. 🏙️ 拉哥斯 🇳🇬 奈及利亞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. 🏙️ 柯那克里 🇬🇳 幾內亞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 🇬🇾 圭亞那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 🇨🇳 中華人民共和國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. 🥾 萬榮 🇱🇦 寮國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月還有 2 個。

6月全世界有什麼活動 →

1. 🏙️ 弗羅茨瓦夫 🇵🇱 波蘭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 🇺🇸 美國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 🇬🇭 迦納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. 🏞️ 圓頂礁國家公園 🇺🇸 美國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 🇺🇸 美國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 🇸🇸 南蘇丹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 🇺🇸 美國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. 🏙️ 阿必尚 🇨🇮 象牙海岸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. 🏙️ 聖路易 🇸🇳 塞內加爾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. 🏞️ 死亡谷國家公園 🇺🇸 美國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. 🏞️ 卡爾斯巴德洞窟國家公園 🇺🇸 美國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 🇺🇸 美國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. 🏙️ 柯多努 🇧🇯 貝南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. 🏙️ 尼阿美 🇳🇪 尼日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. 🏙️ 阿迪斯阿貝巴 🇪🇹 衣索比亞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 🇺🇸 美國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. 🏙️ 拉哥斯 🇳🇬 奈及利亞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. 🏞️ 拱門國家公園 🇺🇸 美國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. 🏙️ 阿布加 🇳🇬 奈及利亞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. 🏙️ 巴蘭幾亞 🇨🇴 哥倫比亞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. 🏙️ 喀拉蚩 🇵🇰 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 🇬🇾 圭亞那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月還有 19 個。

7月全世界有什麼活動 →

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 🇺🇸 美國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. 🏞️ 圓頂礁國家公園 🇺🇸 美國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 🇺🇸 美國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 🇺🇸 美國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. 🏞️ 死亡谷國家公園 🇺🇸 美國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 🇸🇸 南蘇丹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 🇺🇸 美國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 🇺🇸 美國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 🇲🇷 茅利塔尼亞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. 🏞️ 拱門國家公園 🇺🇸 美國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. 🏞️ 卡爾斯巴德洞窟國家公園 🇺🇸 美國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. 🏙️ 聖路易 🇸🇳 塞內加爾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. 🏙️ 阿迪斯阿貝巴 🇪🇹 衣索比亞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. 🏙️ 尼阿美 🇳🇪 尼日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 🇺🇸 美國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. 🏙️ 喀拉蚩 🇵🇰 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. 🏙️ 伊斯蘭瑪巴德 🇵🇰 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. 🏙️ 阿布加 🇳🇬 奈及利亞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. 🏙️ 蒙羅維亞 🇱🇷 賴比瑞亞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. 🏙️ 巴蘭幾亞 🇨🇴 哥倫比亞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. 🥾 法蘭士·約瑟夫冰川 🇳🇿 紐西蘭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月還有 14 個。

8月全世界有什麼活動 →

1. 🏙️ 亞維農 🇫🇷 法國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. 🏖️ 馬拉加 🇪🇸 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. 🏙️ 熱那亞 🇮🇹 義大利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 🇺🇸 美國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. 🏙️ 漢堡 🇩🇪 德國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. 🏞️ 圓頂礁國家公園 🇺🇸 美國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. 🏙️ 瓦倫西亞 🇪🇸 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 🇺🇸 美國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 🇺🇸 美國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. 🏞️ 死亡谷國家公園 🇺🇸 美國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. 🏖️ 貝尼多爾姆 🇪🇸 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. 🏞️ 拱門國家公園 🇺🇸 美國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 🇺🇸 美國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 🇺🇸 美國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. 🏞️ 卡爾斯巴德洞窟國家公園 🇺🇸 美國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 🇺🇸 美國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 🇸🇸 南蘇丹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. 🏙️ 查爾斯頓 🇺🇸 美國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. 🏙️ 阿迪斯阿貝巴 🇪🇹 衣索比亞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. 🏙️ 尼阿美 🇳🇪 尼日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. 🏙️ 雅溫得 🇨🇲 喀麥隆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月還有 27 個。

9月全世界有什麼活動 →

1. 🏖️ 馬拉加 🇪🇸 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. 🏖️ 貝尼多爾姆 🇪🇸 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. 🏙️ 瓦倫西亞 🇪🇸 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. 🏙️ 查爾斯頓 🇺🇸 美國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. 🏙️ 亞維農 🇫🇷 法國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 🇮🇹 義大利Acqua alta season · 10月1日–1月15日（通常）High water comes with the autumn tides.79
9. 🏖️ Dahab 🇪🇬 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. 🏙️ 熱那亞 🇮🇹 義大利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 🇮🇹 義大利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. 🏖️ 五漁村 🇮🇹 義大利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. 🏖️ 亞喀巴 🇯🇴 約旦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. 🏙️ 漢堡 🇩🇪 德國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. 🏙️ 巴格達 🇮🇶 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 🇸🇸 南蘇丹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. 🏖️ 邁阿密 🇺🇸 美國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. 🥾 萬榮 🇱🇦 寮國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. 🏙️ 班基 🇨🇫 中非共和國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. 🏙️ 聖路易 🇸🇳 塞內加爾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. 🏙️ 柯多努 🇧🇯 貝南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. 🏙️ 雅溫得 🇨🇲 喀麥隆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 🇹🇭 泰國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月還有 9 個。

10月全世界有什麼活動 →

1. 🏙️ 亞歷山卓 🇪🇬 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 🇯🇴 約旦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. 🏙️ 巴格達 🇮🇶 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. 🏖️ 馬拉加 🇪🇸 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. 🏖️ 貝尼多爾姆 🇪🇸 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. 🥾 瓦地倫 🇯🇴 約旦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. 🏙️ 查爾斯頓 🇺🇸 美國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. 🏖️ Dahab 🇪🇬 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 🇯🇴 約旦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. 🏙️ 瓦倫西亞 🇪🇸 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. 🏖️ 亞喀巴 🇯🇴 約旦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. 🏙️ 麥加 🇸🇦 沙烏地阿拉伯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. 🏖️ 邁阿密 🇺🇸 美國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. 🏙️ 班基 🇨🇫 中非共和國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 🇹🇭 泰國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. 🏙️ 亞維農 🇫🇷 法國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. 🏙️ 熱那亞 🇮🇹 義大利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. 🏖️ 五漁村 🇮🇹 義大利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 🇹🇭 泰國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 🇮🇹 義大利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 🇮🇹 義大利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. 🏞️ 伊瓜蘇 🇧🇷 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月還有 11 個。

11月全世界有什麼活動 →

1. 🏖️ 亞喀巴 🇯🇴 約旦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. 🏖️ Dahab 🇪🇬 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. 🏙️ 亞歷山卓 🇪🇬 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 🇯🇴 約旦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 🇦🇪 阿拉伯聯合大公國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. 🏙️ 麥加 🇸🇦 沙烏地阿拉伯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 🇯🇴 約旦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. 🥾 瓦地倫 🇯🇴 約旦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 🇿🇼 辛巴威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. 🏙️ 巴格達 🇮🇶 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. 🏙️ 嘉柏隆里 🇧🇼 波札那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. 🏙️ 聖保羅 🇧🇷 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. 🏙️ 路沙卡 🇿🇲 尚比亞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. 🏙️ 薩爾塔 🇦🇷 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. 🥾 法蘭士·約瑟夫冰川 🇳🇿 紐西蘭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 🇮🇹 義大利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. 🏞️ 烏魯汝 🇦🇺 澳大利亞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 🇺🇸 美國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. 🏙️ 布拉柴維爾 🇨🇬 剛果共和國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 🇮🇹 義大利Acqua alta season · 10月1日–1月15日（通常）High water comes with the autumn tides.58
25. 🏙️ 順化市 🇻🇳 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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