Bangkok declares disaster in all districts after severe flooding
Two days of intense rain have left much of Bangkok under water, with dozens dead across Thailand and hundreds of thousands affected in the capital. The floods are testing the Thai capital’s defences and raising concerns about future extreme weather in south-east Asia.
What happened
Bangkok has declared a disaster across all 50 of its districts after heavy rain overwhelmed the city’s drains and canals. In some areas, about 300mm of rain fell in roughly two days, far faster than the system could carry it away. Streets that usually clear quickly after downpours have turned into stagnant pools, with standing water lingering in homes and businesses.
The city had already seen unusually wet conditions, recording 487mm of rain between 1 and 25 September, compared with a historical average of 269mm for the same period. Officials said the canals were full and pumping stations were running at full capacity, together moving about 1,200 cubic metres of water per second. Even so, large areas remained flooded and authorities warned it could take days for the water to drain.
Nationally, floods have hit dozens of provinces. The Guardian reports that 40 people have died in the latest flooding, while earlier figures from Thailand’s disaster agency recorded 23 deaths across the country, including four in Bangkok. About 700,000 people in the capital have been affected, with nearly 7,000 staying in more than 230 shelters as they wait for waters to recede.
Why it matters
Bangkok is a low-lying city of more than 10 million people, and this year’s floods show how close its drainage and canal network is to its limits. The disruption is affecting daily life for hundreds of thousands of residents and weighing on Thailand’s economy. Experts quoted in the Guardian warn that extreme flooding is likely to worsen across south-east Asia as rainfall intensifies, raising urgent questions over how cities such as Bangkok can adapt and protect people, homes and key infrastructure in the years ahead.
The context
- Bangkok's governor, Chadchart Sittipunt, declared a flood disaster in all 50 districts on 26 September 2026, after nearly 300mm of rain fell in 48 hours. He said the problem was that the canals were full.
- From 1 to 25 September, Bangkok recorded 487mm of rain. The historical average for the same period is 269mm.
- The city's pumping stations ran at full capacity, together moving about 1,200 cubic metres of water per second. Prime Minister Anutin Charnvirakul cut short a trip to London to return.
- By 29 September, Thailand's Department of Disaster Prevention and Mitigation had recorded 23 flood deaths nationwide, including four in Bangkok. Floods had hit 29 of the country's 77 provinces.
- About 700,000 people in Bangkok were affected, and nearly 7,000 were staying in more than 230 shelters. The governor said the water could take up to a week to drain fully.