Meteorological Department Weather Forecast Thailand continues to experience heavy to very heavy rainfall. The northern, eastern, and western southern regions have some areas with very heavy rain, while the northeastern, central regions, including Bangkok and its metropolitan area,
On 31 July 2026, the Meteorological Department's daily forecast indicated that Thailand will continue to see heavy to very heavy rain. The northern, eastern, and western southern parts will have some areas with very heavy rain. The northeastern, central regions, including Bangkok and its metropolitan area, and the eastern southern region will experience heavy rain in some locations due to a monsoon trough passing through the north and northeast, combined with a fairly strong southwest monsoon covering the Andaman Sea, Thailand, and the Gulf of Thailand, which will start to weaken. The public is advised to beware of dangers from heavy to very heavy rainfall and accumulated rain, which may cause flash floods and landslides, especially in foothill areas near watercourses and lowlands.
The upper Andaman Sea has fairly strong winds that will gradually weaken. Waves in the Andaman Sea and upper Gulf of Thailand are about 2 meters high. Areas with thunderstorms will have waves exceeding 2 meters. In the lower Gulf of Thailand, waves are about 1 meter high, with waves 1-2 meters off the coast and over 2 meters in thunderstorms. Mariners are advised to navigate cautiously and avoid sailing in areas with thunderstorms.
From 06:00 today until 06:00 tomorrow.
There is a 70% chance of thunderstorms across the area, with heavy rain in Mae Hong Son, Chiang Mai, Nan, Uttaradit, Tak, Kamphaeng Phet, Sukhothai, Phitsanulok, and Phichit provinces. Some areas in Chiang Rai and Phetchabun may experience very heavy rain. Temperatures range from 22-26°C low to 31-35°C high. Southwest winds blow at 10-20 km/h.
There is a 70% chance of thunderstorms across the area, with heavy rain in Loei, Nong Khai, Bueng Kan, Nong Bua Lamphu, Udon Thani, Sakon Nakhon, Nakhon Phanom, Chaiyaphum, Khon Kaen, Nakhon Ratchasima, Buriram, and Surin provinces. Temperatures range from 23-25°C low to 29-34°C high. Southwest winds blow at 10-20 km/h.
There is a 70% chance of thunderstorms across the area, with heavy rain in Nakhon Sawan, Uthai Thani, Lopburi, Saraburi, Phra Nakhon Si Ayutthaya, Kanchanaburi, Ratchaburi, Nakhon Pathom, and Samut Sakhon provinces. Temperatures range from 24-26°C low to 33-35°C high. Southwest winds blow at 10-20 km/h.
There is a 70% chance of thunderstorms across the area, with heavy rain in Sa Kaeo, Chachoengsao, and Chonburi provinces. Some areas in Nakhon Nayok, Prachinburi, Rayong, Chanthaburi, and Trat provinces may experience very heavy rain. Temperatures range from 23-25°C low to 29-34°C high. Southwest winds blow at 20-35 km/h. The sea has waves about 2 meters high, with waves exceeding 2 meters in thunderstorms.
There is a 60% chance of thunderstorms across the area, with heavy rain in Phetchaburi, Prachuap Khiri Khan, Chumphon, and Surat Thani provinces. Temperatures range from 22-26°C low to 31-34°C high. Southwest winds blow at 15-35 km/h. The sea has waves about 1 meter high; waves 1-2 meters off the coast and over 2 meters in thunderstorms.
There is a 70% chance of thunderstorms across the area, with heavy rain in Phang Nga, Phuket, and Krabi provinces. Some areas in Ranong may experience very heavy rain. Temperatures range from 22-24°C low to 28-34°C high. Southwest winds blow at 20-35 km/h. The sea has waves about 2 meters high, with waves exceeding 2 meters in thunderstorms.
There is a 70% chance of thunderstorms across the area, with heavy rain in some locations. Temperatures range from 24-26°C low to 32-34°C high. Southwest winds blow at 10-25 km/h.