August 20, 2026
Thailand is facing a period of heavy to very heavy rainfall, with authorities warning of potential flash floods and landslides in vulnerable areas.
According to the Thai Meteorological Department, a monsoon trough is affecting the North and upper Northeast while a strong southwest monsoon continues to cover Thailand. The combination is bringing widespread heavy rainfall across several parts of the country.
Provinces identified as areas requiring close monitoring include Mae Hong Son, Lampang, Nan, Phrae, Uttaradit, Phitsanulok and Phetchabun in the North; Loei, Nong Khai, Bueng Kan, Udon Thani, Sakon Nakhon, Nakhon Phanom, Mukdahan and Kalasin in the Northeast; and Trat in the East.
Central Thailand, including Ayutthaya and Bangkok, is also expected to experience thunderstorms and periods of heavy rain.
Coastal and Marine Warning
The upper Andaman Sea and upper Gulf of Thailand are experiencing strong waves of around 2–3 metres, potentially exceeding 3 metres in thunderstorm areas.
Small boats in the upper Andaman Sea are advised to remain ashore during hazardous conditions.
⚠️ Areas at Higher Risk
People living near mountain slopes, waterways and low-lying areas should closely monitor official weather and emergency warnings and be prepared to move to safer locations if authorities issue evacuation instructions.
The information above is based on the weather warning information attributed to the Thai Meteorological Department provided for this report.
The supplied source text does not independently establish climate change as the specific cause of this particular rainfall event, so that causal claim has not been presented as a verified fact.
VIHOK NEWS
Source: Thai Meteorological Department