On 26 September, Bangkok declared a flood emergency after 48 hours of continuous heavy rain. Nearly 300mm fell on the city in two days, close to its usual rainfall for the whole of September. Main roads were submerged and people were evacuated.
By 30 September, 40 people had died in floods across Thailand. More than 84,000 people in 21 provinces had been affected, and the damage was put at at least $320 million.
A city at risk
Bangkok is low-lying and built on a river delta, which makes it vulnerable to heavy rain. The government declared special holidays so people could look after their families, and Toyota shut four factories because parts couldn’t get through.
When floodwater lingers in a city, it mixes with sewage and puts drinking water at risk. Flooding across Thailand went on into October, covering huge areas of farmland.
What preparation changes
- Drainage: canals and pumps that can handle extreme rain.
- Health: safe drinking water while floodwater lingers.
- Planning: cities designed to make room for water.
How you can help
Share this story and follow organisations supporting flood-hit communities in Thailand.
Source: Wikipedia, “2026 Bangkok floods” (citing Thai and international reports); NASA Earth Observatory, “Floodwaters Overwhelm Thailand”, 9 October 2026.
