Safety
Thailand Weather Alert: Heavy Rain Forecast for 36 Provinces
The Thai Meteorological Department has issued a warning for heavy rainfall across 36 provinces, including Bangkok, urging residents and travelers to prepare for potential flash floods.
On September 7, 2026, the Thai Meteorological Department (TMD) reported that 36 provinces across Thailand are facing a high risk of heavy rainfall, covering approximately 60% of these areas. According to Khaosod Online, this weather pattern is driven by a monsoon trough passing through the upper North and Northeast regions, combined with a moderate southwest monsoon over the Andaman Sea and the Gulf of Thailand.
For residents and travelers, this alert is significant due to the heightened risk of flash floods and forest runoff, particularly in low-lying areas, near waterways, and along mountain slopes. Authorities have advised the public to avoid known flood-prone routes. Furthermore, maritime conditions in the Andaman Sea are expected to feature waves reaching approximately two meters, with higher swells in thunderstorm areas. Mariners are cautioned to exercise extreme care.
Looking ahead, the TMD has indicated that rainfall is expected to intensify between September 8 and 13, 2026, with heavy to very heavy rain forecasted across many regions, starting in the Northeast. While the current forecast provides a clear outlook for the immediate 24-hour period, the exact intensity and specific geographic impact of the subsequent heavy rainfall from September 8 onwards remain subject to further updates from meteorological officials. Travelers are encouraged to monitor local weather reports closely before planning trips to affected regions.