The Meteorological Department weather forecast Thailand continues to experience heavy rain in some areas due to a monsoon trough passing over the upper northern region. Bangkok and its vicinity have thunderstorms covering 60% of the area, with some heavy rain in certain places.
On 1 August 2026, the Meteorological Department's website forecasted that Thailand will continue to have heavy rain in some areas due to a monsoon trough crossing the upper northern region and upper Laos, along with a moderate southwest monsoon covering the Andaman Sea, Thailand, and the Gulf of Thailand. People are advised to be cautious of dangers from heavy and accumulated rain that may cause flash floods and mountain runoff, especially in hilly areas near waterways and lowlands.
Winds and waves in the Andaman Sea and Gulf of Thailand are weakening. In the upper Andaman Sea, waves are 1-2 meters high, while in the lower Andaman Sea and the Gulf of Thailand, waves are about 1 meter high. In areas with thunderstorms, waves may exceed 2 meters. Mariners are advised to navigate cautiously and avoid sailing in areas with thunderstorms.
From 06:00 today until 06:00 tomorrow
Thunderstorms are expected over 70% of the area, with heavy rain in some parts of Mae Hong Son, Chiang Mai, Chiang Rai, Lampang, Nan, Tak, and Kamphaeng Phet provinces. Temperatures range from 22-26°C minimum to 31-36°C maximum. Winds are southwest at 10-20 km/h.
Thunderstorms cover 70% of the area, with heavy rain in some parts of Loei, Nong Khai, Bueng Kan, Nong Bua Lamphu, Udon Thani, Sakon Nakhon, and Nakhon Phanom provinces. Temperatures range from 23-25°C minimum to 30-34°C maximum. Winds are southwest at 10-20 km/h.
Thunderstorms cover 60% of the area, with heavy rain in some parts of Lopburi, Saraburi, Phra Nakhon Si Ayutthaya, Kanchanaburi, Ratchaburi, and Nakhon Pathom provinces. Temperatures range from 23-26°C minimum to 33-36°C maximum. Winds are southwest at 10-20 km/h.
Thunderstorms cover 60% of the area, with heavy rain in some parts of Nakhon Nayok, Rayong, Chanthaburi, and Trat provinces. Temperatures range from 23-26°C minimum to 32-34°C maximum. Winds are southwest at 15-30 km/h. Seas have waves about 1 meter high, with waves exceeding 2 meters in areas with thunderstorms.
Thunderstorms cover 40% of the area, mostly in Phetchaburi, Prachuap Khiri Khan, Chumphon, Surat Thani, Yala, and Narathiwat provinces. Temperatures range from 22-26°C minimum to 31-35°C maximum. Winds are southwest at 15-30 km/h. Seas have waves about 1 meter high, with waves exceeding 2 meters in areas with thunderstorms.
Thunderstorms cover 40% of the area, with heavy rain in some parts of Ranong province. From Phang Nga northwards: winds are southwest at 15-35 km/h, seas have waves 1-2 meters high, with waves over 2 meters in areas with thunderstorms. From Phuket southwards: winds are southwest at 15-30 km/h, seas have waves about 1 meter high, with waves over 2 meters in areas with thunderstorms.
Thunderstorms cover 60% of the area, with some heavy rain. Temperatures range from 24-26°C minimum to 33-35°C maximum. Winds are southwest at 10-20 km/h.