The Meteorological Department issued bulletin no. 10 warning that from 6-9 November, upper Thailand will experience unstable weather with heavy rain in some areas, while the southern region will see increased rainfall. Authorities advise residents in risk areas to beware of flooding due to rising water levels.
On 6 Nov 2026, the Meteorological Department issued bulletin no. 10 regarding unstable weather in upper Thailand and heavy to very heavy rainfall in the southern region, effective from 6-9 November 2026. From 6–7 November 2026, upper Thailand will continue to have unstable weather characterized by thunderstorms, strong gusts of wind, hail, and heavy rain in some locations. The public is advised to be cautious of dangers from thunderstorms and strong winds, and to avoid staying in open spaces, under large trees, or near unstable advertising boards.
From 7–9 November 2026, the southern region will experience increased rainfall with heavy rain in many areas and very heavy rain in some places. Residents are warned to be cautious of accumulated rainfall that may cause flash floods and forest runoff, especially in foothill areas near waterways and low-lying zones.
This is due to a high-pressure area or another cold air mass spreading from China covering upper Thailand and the South China Sea, causing easterly winds over Thailand and the Gulf of Thailand to strengthen.
Waves and winds in the Andaman Sea and Gulf of Thailand in areas with thunderstorms will have wave heights exceeding 2 meters. Mariners in the Gulf of Thailand and Andaman Sea should check their routes and navigate with caution, and avoid sailing in areas with thunderstorms.
For safety and to minimize potential impacts, the public is advised to plan their activities and travel carefully during this period. They should continuously follow updates from the Meteorological Department via its website at https://www.tmd.go.th or phone numbers 0-2399-4012-13 and 1182, available 24 hours.
Northern Region There is a 60% chance of thunderstorms with strong gusts of wind, hail, and heavy rain in some areas including Mae Hong Son, Chiang Mai, Chiang Rai, Lamphun, Lampang, Phayao, Nan, Phrae, Uttaradit, Sukhothai, Tak, Kamphaeng Phet, Phitsanulok, Phichit, and Phetchabun provinces. Minimum temperatures range from 22-24°C, maximum temperatures from 32-35°C, with southeast winds at 10-20 km/h.
Northeastern Region There is a 40% chance of thunderstorms with strong gusts of wind and heavy rain in some areas including Loei and Chaiyaphum provinces. Minimum temperatures range from 22-24°C, maximum temperatures from 32-35°C, with east winds at 10-20 km/h.
Central Region There is a 70% chance of thunderstorms with strong gusts of wind, hail, and heavy rain in some areas including Nakhon Sawan, Uthai Thani, Chai Nat, Lopburi, Saraburi, Phra Nakhon Si Ayutthaya, Suphanburi, Kanchanaburi, Ratchaburi, Nakhon Pathom, Samut Sakhon, and Samut Songkhram provinces. Minimum temperatures range from 21-26°C, maximum temperatures from 32-35°C, with east winds at 10-20 km/h.
Eastern Region There is a 60% chance of thunderstorms with strong gusts of wind and heavy rain in some areas including Nakhon Nayok, Chachoengsao, Chonburi, and Rayong provinces. Minimum temperatures range from 23-25°C, maximum temperatures from 32-34°C, with southeast winds at 10-30 km/h. Seas have waves under 1 meter, but in areas with thunderstorms, wave heights exceed 2 meters.
Southern Region (East Coast) There is a 60% chance of thunderstorms with heavy rain in some areas including Phetchaburi, Prachuap Khiri Khan, Chumphon, Surat Thani, Nakhon Si Thammarat, Songkhla, Pattani, and Narathiwat provinces. Minimum temperatures range from 22-25°C, maximum temperatures from 32-34°C. From Surat Thani northwards: easterly winds at 15-30 km/h, seas with waves around 1 meter, and in thunderstorms, waves higher than 2 meters. From Nakhon Si Thammarat southwards: southeast winds at 15-30 km/h, seas with waves around 1 meter, and in thunderstorms, waves higher than 2 meters.
Southern Region (West Coast) There is a 60% chance of thunderstorms mostly in Phang Nga, Phuket, Krabi, Trang, and Satun provinces. Minimum temperatures range from 24-26°C, maximum temperatures from 32-34°C, with east winds at 15-30 km/h. Seas have waves about 1 meter high, with waves over 1 meter offshore. In areas with thunderstorms, waves exceed 2 meters.
Bangkok and Metropolitan Area There is a 70% chance of thunderstorms with strong gusts of wind and heavy rain in some areas. Minimum temperatures range from 24-26°C, maximum temperatures from 32-34°C, with southeast winds at 10-20 km/h.