Thailand Weather Forecast: Increased Rainfall Followed by New Cold Spell
The Thai Meteorological Department has issued a seven-day weather outlook from November 13–19, 2026, warning of fluctuating conditions across the country.
According to the Thai Meteorological Department, weather patterns across Thailand are expected to shift significantly between November 13 and 19, 2026. For the upper regions, temperatures will initially rise with morning fog and isolated thunderstorms through November 16, as existing cold air masses weaken. However, from November 17 to 19, residents and travelers should prepare for an increase in thunderstorms and gusty winds, followed by a drop in temperatures as a new cold front from China arrives.
For the southern region, the forecast indicates that while rainfall may decrease between November 14 and 17, heavy rain remains possible in some areas due to the northeast monsoon. Marine conditions in the Gulf of Thailand and the Andaman Sea are expected to feature waves around one meter high, though waves may exceed two meters in areas experiencing thunderstorms.
These conditions are particularly relevant for those planning travel or outdoor activities, as sudden weather changes can impact local transport and safety. Travelers are advised to monitor local updates closely, especially regarding potential flash floods or forest runoff in the southern provinces. While the general outlook provides a broad timeline, specific localized impacts remain subject to change based on the intensity of the incoming cold front and monsoon activity.
