Bangkok declares flood disaster across all 50 districts after rain

Bangkok authorities declared a flood disaster across all 50 districts of Thailand's capital on 26 September 2026, after three consecutive days of rainfall caused heavy flooding. Governor Chadchart Sittipunt said almost 300mm (11.8 inches) of rain had fallen since Thursday afternoon. The disaster designation, which gives local organisations authority to take action, came as roads and canals were submerged and water flowed into homes and stores.aljazeera.com+1

The designation matters because it hands the Bangkok Metropolitan Administration and local organisations special powers to act across every district of the city at once. It is new compared with ordinary rainy-season flooding, which residents described as isolated street water that drained quickly. The declaration came after almost 48 hours of heavy rain left canals full, roads submerged and residents wading through waist-deep water, according to the Gulf News report.gulfnews.com

What the disaster designation changes

Rain fell continuously from Thursday afternoon, swelling Bangkok's network of canals and sending murky water into surrounding homes, restaurants, shops and alleyways. Chadchart said the east of the city was most impacted and warned that more rain was forecast on Saturday. Photos and videos showed major roads submerged and cars abandoned after drivers were unable to move through the rising water. Chadchart said at least 13 roads were also flooded.

The rainfall figure sits against a clear baseline. The capital recorded 487 mm of rain between September 1 and 25, compared to an average of almost 269 mm for the same period from 1991-2020, according to figures from the drainage and sewage department cited. September is the peak of the rainy season in Bangkok but it has been wetter than usual. The Thai Meteorological Service forecast more heavy rain through the week.

Flooding was worst in the east of the city and along the canals, and Chadchart urged residents to move their belongings to higher ground. He said the risk areas were those living near canals. Somkid Pheuk-ngam, a 67-year-old vendor who lives near a canal just north of central Bangkok, told the AFP news agency the water was at her waist level and that she had been closing her shop for two days.

Where the rain fell hardest

The mechanism is a drainage system pushed past its limit by persistent rather than brief rain. Al Jazeera's Tony Cheng said Bangkok usually gets heavy downpours for a couple of hours that flow away into drains quickly and only in isolated areas, whereas this was persistent heavy rain across the city since Thursday evening. The city, built on former marshland, rests about 1.5 metres (five feet) above sea level.

The Bangkok Metropolitan Administration said the city's pumping stations were operating at full capacity, pumping some 1,200 cubic meters per second combined. Chadchart said the city was cooperating with nearby provinces to drain water out through other sides, minimising the amount that flows into Bangkok. Municipal workers cleared rubbish along roads so drains would not block. Chadchart said: "The rain keeps falling and we are doing our best."

How the city is draining water

Chadchart said mid-afternoon on Saturday that the situation had "stabilised", adding that if more rainwater did not fall in the area it would be solved. The government said it would still take two or three days for the water to drain as long as the rain held off. Around 980 people were staying in temporary shelters and 36 bed-ridden people were transferred to hospitals.

No casualties had been reported in Bangkok from this flooding report. Somkid Pheuk-ngam said the flooding was worse than the 2011 flood; widespread flooding across Thailand in 2011 killed more than 500 people and damaged millions of homes. Prime Minister Anutin Charnvirakul said he was cutting short a trip to London to return.

What happens next

The Department of Disaster Prevention and Mitigation warned of low pressure across eastern, northeastern and central Thailand until Sunday, saying there was a risk of flash floods, forest runoff, mudslides and river overflow. Bangkok's public transport authority offered free access to MRT train "park and ride" carparks to store vehicles until October 2, and residents were urged to stay at home.