Thai Meteorological Department Issues Heavy Rain and Temperature Drop Warning

The Thai Meteorological Department (TMD) has released its first warning (No. 309/2569) regarding severe weather conditions expected across the country. From November 18 to 22, 2026, the southern region is forecast to experience continuous heavy to very heavy rainfall. Authorities have cautioned residents and travelers in these areas to remain vigilant against potential flash floods and forest runoff, particularly near slopes and low-lying waterways. Additionally, maritime conditions in the Gulf of Thailand and the Andaman Sea are expected to intensify, with waves reaching approximately 2 meters in the lower Gulf and exceeding 3 meters in areas affected by thunderstorms. Mariners are advised to exercise extreme caution and avoid sailing in stormy conditions.

Simultaneously, upper Thailand will see initial thunderstorms and gusty winds, followed by a notable cooling trend. Temperatures in the Northeast are expected to drop by 2–4 degrees Celsius, while the North, Central region, Bangkok, and the East will see a decrease of 1–3 degrees Celsius. Residents are encouraged to monitor their health due to the shifting weather patterns, and farmers are advised to take precautions to protect their crops. As this is a developing weather event, travelers should stay updated through official TMD channels for any further advisories or changes in the forecast.