Bangkok, September 28, 2026: Severe flooding continues across parts of Bangkok after intense rainfall overwhelmed the capital’s drainage system, forcing thousands of residents into evacuation centres and disrupting roads and daily life.

More than 580,000 homes across Thailand have been affected by flooding since September 16, with at least eight deaths reported nationwide. Authorities estimate the economic damage at around 11 billion baht ($327 million), although losses could rise if flooding persists.

Bangkok Among the Worst-Affected Areas

Bangkok received around 320 mm of rain over two to three days, close to the amount the city normally receives during the entire month of September. The heavy rainfall overwhelmed drainage infrastructure and inundated several neighbourhoods.

The Thai government reported that approximately 329,000 households, representing around 700,000 people, have been affected in Bangkok. The hardest-hit districts include Lat Krabang, Bang Kapi, Khan Na Yao, Sai Mai, Suan Luang, Saphan Sung and Lak Si.

Thousands Move to Evacuation Centres

Nearly 6,000 people in Bangkok had moved to 234 evacuation centres, while authorities reported that more than 80,000 residents in flooded areas were unable to leave their homes. Emergency teams have been deploying boats, mobile kitchens and other relief resources.

The Bangkok Metropolitan Administration has also moved around 1,500 bedridden patients to hospitals as part of its emergency response.

Floodwater Begins to Recede

Rainfall has started to ease as the low-pressure system affecting Bangkok moves away. However, water remains trapped in several neighbourhoods and major roads.

Authorities are operating pumps at full capacity and lowering water levels in major canals, including Khlong Saen Saep, Khlong Lat Phrao, Khlong Prawet Buri Rom and Khlong Prem Prachakorn.

The Thai Meteorological Department is still forecasting thunderstorms across around 70% of Bangkok and surrounding areas, with isolated heavy rain possible.

Economic Impact

The flooding is also creating significant economic pressure. An estimate cited by Reuters puts nationwide damage at approximately 11 billion baht, while Bangkok and surrounding areas are expected to experience substantial disruption to retail, wholesale, industry and transport.

Bangkok’s location on a low-lying river delta makes it particularly vulnerable to flooding. The city is also sinking by several millimetres annually, adding to its long-term exposure to water-related risks.

Long-Term Climate and Flood-Management Concerns

The latest flooding has renewed attention on Bangkok’s drainage capacity, urban development and long-term flood management. Thailand’s government is also preparing a major water-management project intended to improve water diversion and reduce future flood risks in the central region.

For now, authorities are concentrating on evacuations, pumping operations, food distribution and restoring transportation routes while monitoring further rainfall.