Heavy Rain Forecast for 37 Thai Provinces
Thailand’s Meteorological Department has warned of heavy to very heavy rain across 37 provinces, with about 70 % of the area affected, including Bangkok and its vicinity. The forecast cites a monsoon trough over the Gulf of Thailand and high pressure to the north, bringing easterly winds and raising flood risks, especially in low‑lying and slope areas. Mariners in the Andaman Sea and Gulf of Thailand should expect waves over two metres in thunderstorm zones and exercise caution.
Northern region: isolated thunderstorms over about 10 percent of the area, mainly in Tak and Kamphaeng Phet provinces; minimum temperature 21‑25 °C, maximum 33‑36 °C; easterly winds 10‑20 km/h. Northeastern region: thunderstorms over about 30 percent of the area, chiefly in Nakhon Ratchasima, Buriram, Surin, Si Sa Ket and Ubon Ratchathani provinces; low 22‑24 °C, high 32‑35 °C; northeasterly winds 10‑20 km/h. Central region: thunderstorms over about 60 percent of the area, with heavy rain in some locations, notably Lopburi, Saraburi, Phra Nakhon Si Ayutthaya, Suphan Buri, Kanchanaburi, Ratchaburi, Nakhon Pathom, Samut Sakhon and Samut Songkhram provinces; low 23‑26 °C, high 33‑36 °C; easterly winds 10‑20 km/h. Eastern region: thunderstorms over about 70 percent of the area, with heavy rain in some places, especially Nakhon Nayok, Chachoengsao, Chonburi, Rayong, Chanthaburi and Trat provinces; low 23‑25 °C, high 31‑34 °C; easterly winds 10‑30 km/h; sea waves generally under one metre, but over two metres in thunderstorm zones. Southern region (eastern coast): thunderstorms over about 70 percent of the area, with heavy to very heavy rain in some places, covering Prachuap Khiri Khan, Chumphon, Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla, Yala and Narathiwat provinces; low 22‑25 °C, high 30‑34 °C; from Surat Thani upward: easterly winds 15‑30 km/h; from Nakhon Si Thammarat downward: variable winds 15‑30 km/h; sea waves about one metre, exceeding two metres in thunderstorm areas. Southern region (western coast): thunderstorms over about
