Thailand Issues Heavy Rain and High Wave Warning

Weather Alert: Heavy Rainfall and Rough Seas

The Thai Meteorological Department (TMD) has released an official weather advisory effective August 6, 2026. According to the report, a monsoon trough is currently positioned across the upper North and Northeast regions, extending toward a low-pressure cell located over the Gulf of Tonkin. Simultaneously, a rather strong southwest monsoon is prevailing over the Andaman Sea, the Gulf of Thailand, and the country at large.

Impact and Forecast

Residents and travelers should prepare for isolated heavy rains throughout the country. The North, Northeast, and East regions are specifically identified as areas where very heavy rainfall is possible.

For those near the coast, the situation is particularly hazardous. The TMD reports that strong winds are generating waves in the upper Andaman Sea and the upper Gulf of Thailand reaching heights of 2 to 3 meters. In areas experiencing thundershowers, wave heights may exceed 3 meters.

Guidance for Travelers

• Maritime Safety: All vessels are advised to proceed with caution and strictly avoid navigating through areas experiencing thundershowers.
• General Travel: Those planning trips to the North, Northeast, or East should monitor local weather updates closely, as heavy rain may impact travel plans and outdoor activities.

While the TMD has provided these forecasts, the exact duration of these conditions remains to be confirmed. Travelers are encouraged to stay updated via official TMD channels.