Thailand Warns of Heavy Rain Across 33 Provinces
Thailand's Meteorological Department has warned of heavy rain in 33 provinces, with downpours covering about 60% of each area, raising risks of flash floods and mountain runoff. The forecast, driven by a high-pressure system from China, affects the north, central, east, and southern regions, and calls for public caution and marine safety. Waves above two meters are expected in the Andaman Sea and Gulf of Thailand during thunderstorms.
According to the 24-hour forecast issued on October 14, 2026, Thailand will continue to see heavy rain in some areas, especially the lower northern region, central plains including Bangkok and its vicinity, the eastern region, and the upper southern region. The public in these areas should be alert to hazards from heavy and cumulative rain, which may trigger flash floods and mountain runoff, particularly on slopes near waterways and low-lying areas. The weather pattern is driven by a high-pressure zone or cold air mass from China over the north, northeast, and South China Sea, producing easterly and southeasterly winds that draw moisture from the South China Sea across Thailand and the Gulf of Thailand. In the Andaman Sea and Gulf of Thailand, thunderstorms may generate waves exceeding two meters; mariners are advised to check routes, navigate cautiously, and avoid sailing in thunderstorm areas.
The detailed forecast from 06:00 today to 06:00 tomorrow shows: - North: thunderstorms over 30% of the area, heavy rain in Tak and Kamphaeng Phet provinces; lows 21‑26°C, highs 33‑36°C; easterly winds 10‑20 km/h. - Northeast: thunderstorms over 30% of the area, mainly in Loei, Chaiyaphum, Nakhon Ratchasima, Buriram, Surin, Sisaket, and Ubon Ratchathani; lows 21‑24°C, highs 33‑34°C; easterly winds 10‑25 km/h. - Central: thunderstorms over 70% of the area, heavy rain in Nakhon Sawan, Uthai Thani, Chai Nat, Suphan Buri, Phra Nakhon Si Ayutthaya, Kanchanaburi, Ratchaburi, Nakhon Pathom, Samut Sakhon, and Samut Songkhram; lows 23‑26°C, highs 34‑36°C; southeasterly winds 10‑20 km/h. - East: thunderstorms over 60% of the area, heavy rain in Chachoengsao, Sa Kaeo, Chon Buri, Rayong, Chanthaburi, and Trat; lows 24‑26°C, highs 32‑34°C; southeasterly winds 10‑30 km/h; sea waves under 1 meter, but over 2 meters in thunderstorm zones. - South (east coast): thunderstorms over 60% of the area, heavy rain in Phetchaburi, Prachuap Khiri Khan, Chumphon, Surat Thani, and Nakhon Si Thammarat; lows 23‑25°C, highs 33‑35°C; southeasterly winds 15‑30 km/h; sea waves about 1 meter, exceeding 2 meters in thunderstorms. - South (west coast): thunderstorms over 60% of the area, heavy rain in Phang Nga and Krabi; lows 23‑25°C, highs 31‑35°C; easterly winds 15‑30 km/h; sea waves about 1 meter, exceeding 2 meters in thunderstorms. - Bangkok and vicinity: thunderstorms over 60% of the area, heavy rain in some spots; lows 26‑27°C, highs 33‑35°C; southeasterly winds 10‑20 km/h.
