Meteorological Department weather forecast for Thailand. Thailand continues to experience heavy rain in some areas, with particularly heavy rainfall in the eastern region.
On 14 August 2026, the Meteorological Department's daily weather forecast indicates that Thailand continues to have heavy rain in some areas, especially in the eastern region. This is due to a monsoon trough passing through Myanmar, northern Laos, and northern Vietnam, combined with a fairly strong southwest monsoon covering the Andaman Sea, Thailand, and the Gulf of Thailand. Residents in these areas are advised to be cautious of hazards from heavy and accumulated rainfall that may cause flash floods and landslides, particularly in foothill areas near waterways and lowlands, including potential riverbank overflows in the northeastern region.
In the upper Andaman Sea, winds are fairly strong with waves 2-3 meters high; in areas with thunderstorms, waves exceed 3 meters. Mariners should navigate with caution and avoid sailing in stormy areas. Small boats in the upper Andaman Sea are advised to stay ashore.
From 06:00 today until 06:00 tomorrow.
Thunderstorms cover 60% of the area, with heavy rain in Mae Hong Son, Nan, and Tak provinces. Temperatures range from 22 to 28 degrees Celsius at night, rising to 32 to 35 degrees Celsius during the day. Winds come from the southwest at 10-20 km/h.
Thunderstorms cover 60% of the area, with heavy rain in Udon Thani, Nong Khai, Bueng Kan, Sakon Nakhon, Nakhon Phanom, and Mukdahan provinces. Temperatures range from 24 to 26 degrees Celsius at night, rising to 32 to 35 degrees Celsius during the day. Winds come from the southwest at 10-20 km/h.
Thunderstorms cover 40% of the area, with heavy rain in Saraburi and Kanchanaburi provinces. Temperatures range from 24 to 27 degrees Celsius at night, rising to 34 to 36 degrees Celsius during the day. Winds come from the southwest at 10-25 km/h.
Thunderstorms cover 60% of the area, with heavy rain in Nakhon Nayok and Prachinburi provinces, and very heavy rain in Chanthaburi and Trat provinces. Temperatures range from 24 to 28 degrees Celsius at night, rising to 30 to 34 degrees Celsius during the day. Winds come from the southwest at 20-35 km/h. Sea waves are about 2 meters high, exceeding 2 meters in thunderstorm areas.
Thunderstorms cover 40% of the area, mainly in Chumphon, Surat Thani, and Nakhon Si Thammarat provinces. Temperatures range from 23 to 26 degrees Celsius at night, rising to 31 to 36 degrees Celsius during the day. Winds come from the southwest at 20-35 km/h. Sea waves are 1-2 meters high near shore and about 2 meters offshore, exceeding 2 meters in thunderstorm areas.
Thunderstorms cover 60% of the area, with heavy rain in Ranong and Phang Nga provinces. Temperatures range from 23 to 27 degrees Celsius at night, rising to 31 to 36 degrees Celsius during the day. From Phang Nga northwards, winds come from the southwest at 20-40 km/h, with sea waves 2-3 meters high, exceeding 3 meters in thunderstorm areas. From Phuket southwards, winds come from the southwest at 15-35 km/h, with sea waves 1-2 meters high, exceeding 2 meters in thunderstorm areas.
Thunderstorms cover 60% of the area, with heavy rain in some parts. Temperatures range from 26 to 27 degrees Celsius at night, rising to 32 to 34 degrees Celsius during the day. Winds come from the southwest at 10-25 km/h.