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Severe Weather Alert: Heavy Rainfall and Rough Seas Forecast Across Thailand

Thai Meteorological Department Alerts One source

The Thai Meteorological Department has issued warnings for heavy to very heavy rainfall across southern regions and unstable weather conditions in upper Thailand.

As of October 26, 2026, the Thai Meteorological Department (TMD) has issued multiple alerts regarding significant weather shifts across the country. A high-pressure system originating from China is moving toward upper Thailand and the South China Sea. This system is interacting with a strengthening monsoon trough currently positioned across the middle of the southern region.

For residents and travelers in the South, the TMD forecasts continuous rainfall, with heavy to very heavy downpours expected. Additionally, maritime conditions in the Andaman Sea and the Gulf of Thailand are predicted to be hazardous, with wave heights exceeding 2 meters in areas affected by thundershowers.

In upper Thailand, the weather is expected to be variable. The initial period will likely feature thundershowers, gusty winds, and isolated heavy rains, accompanied by the risk of lightning strikes. While rainfall in the Northeast is projected to decrease following this initial phase, those in affected areas should remain vigilant regarding changing conditions.

These weather patterns may impact travel plans, particularly for those engaging in maritime activities or visiting southern provinces. Travelers are advised to monitor local updates closely, as the intensity and specific path of these weather systems remain subject to change. Please refer to official TMD channels for the most current information regarding your specific location.