Safety
Severe Weather Alert: Heavy Rainfall and Flood Risks Across Thailand
The Thai Meteorological Department has issued a severe weather warning for 51 provinces, forecasting heavy rain, flash floods, and landslides through September 25, 2026.
On September 24, 2026, the Thai Meteorological Department (TMD) issued a critical weather alert for 51 provinces across Northern, Northeastern, Central, and Eastern Thailand, including Bangkok and its metropolitan area. Forecasters expect heavy to very heavy rainfall covering 80% of these regions, driven by a strong low-pressure system moving along a monsoon trough.
Residents and travelers are advised to exercise extreme caution due to the high risk of flash floods, forest runoff, and landslides, particularly in low-lying areas and regions near mountain slopes. The TMD specifically warns against traveling through routes prone to recurring flooding.
Marine conditions are also affected. The upper Gulf of Thailand is experiencing strong waves reaching 2–3 meters, while the upper Andaman Sea faces waves of approximately 2 meters. Mariners are urged to exercise caution, and small boats in the upper Gulf of Thailand are advised to remain ashore until September 27, 2026.
While the immediate forecast covers the 24-hour period following the announcement, the situation remains dynamic. Travelers should monitor local news for updates on road closures and potential disruptions to transport services. It is recommended to avoid areas with active weather warnings and follow instructions from local authorities.