The Meteorological Department issued Bulletin No. 8 warning of heavy to very heavy rain in parts of southern Thailand, with risks of flash floods and landslides. The country continues to experience cool mornings, with some rain in the northern region.
On 12 Nov 2026 GMT+7, the Meteorological Department website released Bulletin No. 8 regarding heavy to very heavy rain in southern Thailand (effective until 13 Nov 2026 GMT+7).
From 12 to 13 Nov 2026 GMT+7, southern Thailand will see heavy to very heavy rain in some areas. The public is advised to be cautious of accumulated rainfall that could cause flash floods and landslides, especially in foothill areas near waterways and lowlands. Winds and waves in the Andaman Sea and Gulf of Thailand are strengthening, with waves 2-3 meters high in the lower Gulf and over 3 meters in thunderstorm zones. Mariners in these waters should navigate carefully and avoid traveling during thunderstorms. Small boats in the lower Gulf should stay ashore during this period.
Northern Thailand will continue to have cool mornings with some rain. Residents are urged to take care of their health due to the cold weather, and farmers should protect their agricultural produce from potential damage.
These conditions are due to a strong high-pressure cold air mass spreading from China over upper Thailand and the South China Sea, combined with westerly wind currents moving over Myanmar, northern Thailand, and upper Laos, while a moderate northeast monsoon covers the Gulf of Thailand, southern Thailand, and the Andaman Sea.
For safety and to minimize impact, the public is advised to plan daily activities and travel cautiously during this period. Continuous updates are available from the Meteorological Department via their website at https://tmd.go.th or by calling 0-2399-4012-13 and hotline 1182, available 24 hours.
Southern Thailand will experience heavy to very heavy rain in some areas. Residents are warned to be cautious of thunderstorms, heavy rainfall, and accumulated rain, which may cause flash floods and landslides, especially in foothill areas near waterways and lowlands.
Upper Thailand will continue to have cool mornings, with some rain in the northern region. Residents are advised to take care of their health due to cold weather, and farmers should prepare to protect their crops from possible damage.
This is due to a strong high-pressure cold air mass still covering upper Thailand and the South China Sea, along with westerly wind currents passing over Myanmar, northern Thailand, and upper Laos, while a moderate northeast monsoon covers the Gulf of Thailand, southern Thailand, and the Andaman Sea.
Winds and waves in the Andaman Sea and Gulf of Thailand are strengthening. The lower Gulf has waves 2-3 meters high, with waves exceeding 3 meters in thunderstorm areas. Mariners should navigate cautiously and avoid traveling during thunderstorms. Small boats in the lower Gulf should remain ashore during this time.
From 06:00 today until 06:00 tomorrow
Northern Region
Cool mornings with temperatures dropping slightly and a 30% chance of rain, mainly in Mae Hong Son, Chiang Mai, Chiang Rai, Lamphun, Lampang, Phayao, Nan, and Uttaradit provinces. Minimum temperatures range from 16 to 22 degrees Celsius, maximum temperatures from 23 to 31 degrees Celsius. Mountain peaks will be cold, with lows of 9 to 15 degrees Celsius. Northwest winds blow at 10-25 km/h.
Northeastern Region
Cool mornings with light rain in some areas. Minimum temperatures 17-20 degrees Celsius, maximum 28-31 degrees Celsius. Mountain peaks will be cold with lows of 10-14 degrees Celsius. Northeast winds at 10-30 km/h.
Central Region
Cool mornings with light rain in some areas. Minimum temperatures 20-23 degrees Celsius, maximum 29-32 degrees Celsius. Northwest winds at 10-25 km/h.
Eastern Region
Cool mornings with light rain in some areas. Minimum temperatures 20-24 degrees Celsius, maximum 30-34 degrees Celsius. Northeast winds at 15-30 km/h. Seas have waves about 1 meter high near shore and over 1 meter offshore.
Southern Region (East Coast)
Thunderstorms cover 70% of the area with heavy rain in parts of Phatthalung, Songkhla, Pattani, Yala, and Narathiwat provinces. Very heavy rain occurs in some areas of Chumphon, Surat Thani, and Nakhon Si Thammarat. Temperatures range from 22-24 degrees Celsius minimum and 28-32 degrees Celsius maximum. From Surat Thani northward, easterly winds blow at 15-35 km/h with waves 1-2 meters high, and over 2 meters where thunderstorms occur. From Nakhon Si Thammarat southward, southeast winds at 20-40 km/h bring waves 2-3 meters high, exceeding 3 meters in thunderstorm areas.
Southern Region (West Coast)
Thunderstorms cover 60% of the area with heavy rain in parts of Ranong, Phang Nga, Phuket, Krabi, Trang, and Satun. Minimum temperatures 23-25 degrees Celsius, maximum 30-34 degrees Celsius. Easterly winds at 15-35 km/h with waves about 1 meter high near shore and 1-2 meters offshore, exceeding 2 meters in thunderstorm areas.
Bangkok and Metropolitan Area
Partly cloudy with minimum temperatures 23-25 degrees Celsius and maximum 31-33 degrees Celsius. Northeast winds at 10-25 km/h.