The Meteorological Department has issued its first bulletin stating that southern Thailand will experience continuous rain, with heavy rain in many areas and very heavy rain in some places. Upper Thailand will initially have thunderstorms and strong gusty winds, followed by cooler weather and strong winds.
On 15 November 2026, the Meteorological Department website issued its first bulletin warning of heavy to very heavy rain in southern Thailand, effective from 18 to 22 November 2026.
From 18 to 22 November 2026, southern Thailand will have continuous rain with heavy rainfall in many areas and very heavy rain in some places. The public is urged to be cautious of dangers from accumulated rain that may cause flash floods and mountain runoff flooding, especially in foothill areas near waterways and lowlands. Meanwhile, winds and waves in the Gulf of Thailand and the Andaman Sea will strengthen. In the lower Gulf, waves will reach around 2 meters, with waves over 3 meters in thunderstorm areas. Seafarers in these waters should check their routes and navigate carefully, avoiding areas with thunderstorms.
In upper Thailand, there will be thunderstorms and strong gusty winds in some areas initially, followed by cooler temperatures and strong winds. In the northeast, temperatures will drop 2-4 degrees Celsius, while in the north, central region, Bangkok and its vicinity, and the east, temperatures will fall 1-3 degrees Celsius. The public is advised to take care of their health due to changing weather conditions, and farmers should protect their crops from possible damage.
This is due to a moderate high-pressure or cold air mass from China spreading over upper Thailand and the South China Sea, combined with a strengthening northeast monsoon over the Gulf of Thailand, southern Thailand, and the Andaman Sea.
For safety and to minimize potential impacts, the public should plan their activities and travel carefully during this period. Continuous monitoring of announcements from the Meteorological Department is recommended. Information is available at https://www.tmd.go.th or by calling 0-2399-4012-13 and 1182, 24 hours a day.
General weather conditions: The south will experience heavy rain in some areas, while upper Thailand will have rising temperatures and some rain. Cool weather with morning fog will persist in the north and northeast due to weakening cold air masses over upper Thailand and the South China Sea. Eastern winds bring moisture over upper Thailand, and a moderate northeast monsoon covers the Gulf of Thailand and the south. People in the south should beware of heavy and accumulated rain that may cause flash floods and mountain runoff, especially in foothills near waterways and lowlands.
In the Andaman Sea and Gulf of Thailand, waves exceed 2 meters in thunderstorm areas. Seafarers in these regions should navigate with caution.
Additionally, from 18 to 22 November 2026, southern Thailand will have heavy rain in many areas, with some places experiencing very heavy rainfall. Winds and waves in the Gulf of Thailand and Andaman Sea will intensify, with waves exceeding 3 meters in thunderstorm zones in the lower Gulf. Upper Thailand will experience thunderstorms and strong gusty winds in some areas on 17-18 November, followed by cooler temperatures and strong winds. For safety and to reduce impacts, the public is urged to monitor Meteorological Department updates continuously.
From 06:00 today until 06:00 tomorrow
Northern Region
Cool with morning fog, temperatures rising 1-2 degrees Celsius, with light rain in some areas. Lowest temperatures 18-24°C, highest 30-35°C. Mountain peaks remain cold, with lows of 10-15°C. Northeast winds at 10-20 km/h.
Northeastern Region
Cool with some morning fog, temperatures rising 1-2 degrees Celsius, with rain in lower areas. Lowest temperatures 22-24°C, highest 33-35°C. Mountain peaks cool to cold, lows 11-17°C. Northeast winds at 10-20 km/h.
Central Region
Partly cloudy, temperatures rising slightly, with rain in lower areas. Lowest temperatures 23-25°C, highest 32-35°C. East winds at 10-20 km/h.
Eastern Region
Mostly cloudy, temperatures rising slightly, with a 10% chance of rain, mainly in Nakhon Nayok, Chonburi, Rayong, Chanthaburi, and Trat provinces. Lowest temperatures 24-26°C, highest 32-35°C. Southeast winds at 15-30 km/h. Seas have waves about 1 meter high, rising above 1 meter further 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, Songkhla, Pattani, Yala, and Narathiwat. Lowest temperatures 24-25°C, highest 30-34°C. Southeast winds at 15-35 km/h. Seas have waves 1-2 meters high, exceeding 2 meters in thunderstorm areas.
Southern Region (West Coast)
Thunderstorms in 40% of the area, with heavy rain in some parts of Phang Nga and Krabi. Lowest temperatures 23-25°C, highest 34-35°C. East winds at 15-35 km/h. Seas have waves about 1 meter high near shore, 1-2 meters further out, exceeding 2 meters in thunderstorm areas.
Bangkok and Vicinity
Mostly cloudy, temperatures rising slightly, with a 10% chance of rain. Lowest temperatures 24-26°C, highest 32-34°C. Southeast winds at 10-20 km/h.