The Meteorological Department issued Warning No. 6 reporting heavy to very heavy rain in some parts of southern Thailand, with risks of flash floods and flash floods from mountain runoff. The country will experience cooler weather and strong winds, except for the upper northern region which will have thunderstorms and strong gusts in some areas.
On 11 Nov 2026 GMT+7Meteorological Department websiteAnnouncement No. 6 regarding heavy to very heavy rain in southern Thailand (effective until 13 Nov 2026 GMT+7).
Between 11-13 Nov 2026 GMT+7, southern Thailand will experience heavy to very heavy rain in some areas. Residents are advised to beware of dangers from continuous rainfall which may cause flash floods and flash floods from mountain runoff, especially in foothill areas near waterways and lowlands. Wind and waves in the Andaman Sea and Gulf of Thailand will strengthen, with waves in the lower Gulf reaching 2-3 meters, and over 3 meters in areas with thunderstorms. Mariners in the Gulf and Andaman Sea should navigate cautiously and avoid areas with thunderstorms. Small boats in the lower Gulf of Thailand are advised to stay ashore during this period.
Thailand will experience cooler weather with strong winds, except for the upper northern region which will have thunderstorms and strong gusts in some areas. This is due to high pressure or cold air masses from China spreading over the country. Residents are advised to take care of their health due to the cooler conditions, and farmers should protect their crops from possible damage.
This situation is caused by a fairly strong high-pressure system or cold air mass from China covering upper Thailand and the South China Sea, combined with westerly wind currents moving through Myanmar and northern Thailand, while a moderate northeast monsoon blows over the Gulf of Thailand, southern Thailand, and the Andaman Sea.
For safety and to minimize potential impacts, the public is urged to plan their activities and travel carefully during this period. Continuous updates will be provided by the Meteorological Department. Information is available on their website https://tmd.go.th or by calling 0-2399-4012-13 and 1182, 24 hours a day.
Heavy rain is expected in parts of southern Thailand. Residents there should be cautious of dangers from thunderstorms, heavy rainfall, and accumulated rain which could cause flash floods and flash floods, especially in foothill areas near waterways and lowlands.
Upper Thailand will experience cooler weather with strong winds, except the upper northern region where thunderstorms and strong gusts will occur in some areas. Residents in upper Thailand should take care of their health due to the cooler conditions, and farmers should prepare to prevent damage to crops caused by strong winds.
This is due to a fairly strong high-pressure or cold air mass from China spreading over upper Thailand and the South China Sea, combined with westerly wind currents passing through Myanmar and northern Thailand, while a moderate northeast monsoon covers the Gulf of Thailand, southern Thailand, and the Andaman Sea.
Wind and waves in the Andaman Sea and Gulf of Thailand will intensify, with waves 2-3 meters high in the lower Gulf, and over 3 meters where thunderstorms occur. Mariners are advised to navigate with caution and avoid areas with thunderstorms. Small boats in the lower Gulf of Thailand should remain ashore during this time.
From 06:00 today until 06:00 tomorrow
Northern Region
Cool in the morning with strong winds. Temperatures will drop by 1-2 degrees Celsius. Thunderstorms expected in 20% of the area, with strong gusts mainly in Mae Hong Son, Chiang Mai, and Chiang Rai provinces. Lowest temperatures 17-23°C, with cold conditions on mountain peaks ranging from 9-15°C. Easterly winds at 10-30 km/h.
Northeastern Region
Cool in the morning with strong winds. Light rain in some lower parts of the region. Lowest temperatures 16-19°C, with cold conditions on mountain peaks ranging from 10-14°C. Highest temperatures 27-32°C. Northeasterly winds at 15-30 km/h.
Central Region
Cool in the morning with strong winds. Light rain in some areas. Lowest temperatures 21-23°C, highest temperatures 31-33°C. Northeasterly winds at 10-30 km/h.
Eastern Region
Cool in the morning with strong winds. Light rain in some areas. Lowest temperatures 20-23°C, highest temperatures 31-33°C. Northeasterly winds at 15-30 km/h. Sea waves about 1 meter high, rising to over 1 meter offshore.
Southern Region (East Coast)
Thunderstorms in 60% of the area with heavy rain in some parts of Chumphon, Surat Thani, Nakhon Si Thammarat, Phatthalung, and Songkhla provinces. Lowest temperatures 22-24°C, highest temperatures 28-32°C. From Surat Thani northward: Northeasterly winds at 15-35 km/h, sea waves 1-2 meters high, over 2 meters in thunderstorm areas. From Nakhon Si Thammarat southward: Easterly winds at 20-40 km/h, sea waves 2-3 meters high, over 3 meters in thunderstorm areas.
Southern Region (West Coast)
Thunderstorms in 40% of the area, mostly in Ranong, Phang Nga, Trang, and Satun provinces. Lowest temperatures 23-24°C, highest temperatures 30-33°C. Easterly winds at 15-35 km/h. Sea waves about 1 meter high near shore, 1-2 meters offshore, over 2 meters in thunderstorm areas.
Bangkok and Vicinity
Cool in the morning with strong winds. Light rain in some areas. Lowest temperatures 22-23°C, highest temperatures 31-33°C. Northeasterly winds at 10-30 km/h.