Heavy Rainfall Forecast for Southern Thailand
The Thai Meteorological Department has issued a weather alert for heavy to very heavy rainfall in parts of Southern Thailand due to a prevailing northeast monsoon.
Weather Alert for Southern Thailand
The Thai Meteorological Department (TMD) has released an update regarding weather conditions across the country as of November 12, 2026. A high-pressure system originating from China is currently weakening, while a moderate northeast monsoon continues to influence the Gulf of Thailand and the southern regions.
Impact and Forecast
Residents and travellers in the South should prepare for isolated heavy to very heavy rainfall. The provinces of Prachuap Khiri Khan, Chumphon, and Surat Thani are specifically identified as areas of concern. Meanwhile, upper Thailand is expected to see a slight increase in temperatures, with the North and Northeast regions experiencing cooler conditions accompanied by morning fog.
Marine Conditions
For those planning maritime activities, the TMD reports that wind and wave conditions in the lower Gulf are moderating. Waves are currently expected to reach approximately 2 meters in height, though they may exceed this level in areas affected by thundershowers.
What Remains to be Confirmed
While the current forecast provides a clear outlook for the immediate future, weather patterns can shift rapidly. Travellers are advised to monitor local updates from the TMD or their accommodation providers for real-time changes in conditions. It is recommended to exercise caution when planning coastal excursions or travel through the affected southern provinces until the monsoon influence subsides.
