The Meteorological Department issued bulletin number 10 warning of heavy to very heavy rain until 27 September. Check affected provinces and monitor for flash floods and forest runoff.
26 September 2026 GMT+7Meteorological DepartmentBulletin number 10 on heavy to very heavy rain over Thailand is in effect until 27 September 2026.
From 26 to 27 September 2026, the North, Northeast, Central region including Bangkok and vicinity, East, and South will experience heavy rain in many areas and very heavy rain in some places.
This is due to a strong low-pressure area covering the lower Central region and Bangkok including vicinity moving along the monsoon trough across the Central region, combined with a strengthening southwest monsoon over the Andaman Sea, South, and Gulf of Thailand.
People in Thailand are advised to beware of heavy to very heavy rain and continuous accumulated rainfall that could cause flash floods and forest runoff, especially in foothill areas near waterways and lowlands. Avoid traveling through frequently flooded routes, particularly in low-lying areas prone to short-term waterlogging.
Waves and winds in the Andaman Sea and Gulf of Thailand are strengthening. The upper Gulf and upper Andaman Sea have waves 2-3 meters high, exceeding 3 meters in thunderstorm areas. The lower Gulf and lower Andaman Sea have waves about 2 meters high, above 2 meters in thunderstorm zones. Boaters in these areas should navigate cautiously and avoid sailing in thunderstorms. Small boats in the upper Gulf and upper Andaman Sea should refrain from going to sea until 27 September 2026.
For safety and to minimize potential impacts, the public should plan their activities and travel carefully during this period. People are urged to follow updates from the Meteorological Department, accessible via its website or by calling 0-2399-4012-13 and 1182, available 24 hours.
26 September 2026 GMT+7
27 September 2026 GMT+7
