Thai Meteorological Department Warns of Heavy Rain Nationwide, Bangkok Faces 80% Thunderstorm Chance

The Thai Meteorological Department (TMD) has issued a nationwide warning for heavy rain on Monday, September 21st, 2026. The department forecasts isolated very heavy downpours in the East and predicts an 80% chance of thunderstorms covering Bangkok and its surrounding areas within its 24-hour forecast. According to the TMD, Thailand is expected to experience heavy rain in several regions across the country. This is attributed to an active monsoon trough and the influence of a low-pressure area. The forecast indicates heavy rain, with potential for very heavy downpours in localized areas, across the Northwest, Central, East, and parts of the South. The Bangkok metropolitan area, including the capital, is particularly likely to experience intense rain accompanied by thunderstorms. Concerns are being raised about potential damage from heavy rainfall, including landslides, rising river levels, and flooding. The Meteorological Department urges residents in affected areas to stay updated on the latest weather information and take necessary precautions to ensure their safety. Residents in low-lying areas and those living along rivers are particularly advised to remain vigilant. Thailand is currently in the peak of its rainy season, a period when heavy rains and floods are common across various parts of the country. This latest warning aligns with the typical weather patterns of the season, though localized intense rainfall can also lead to disruptions in urban transportation networks and impact infrastructure. Source: Pattaya News