Weather Dept warns of severe storms across Thailand
The Thai Meteorological Department issued Announcement No. 12 warning of erratic weather, heavy rain, and flash floods from Nov 7 to 9, 2026.
- The Thai Meteorological Department has issued a warning for severe weather, including thunderstorms, strong gusts, and heavy rain, across Thailand from November 7-9, 2026.
- The southern region is expected to be most affected, with heavy to very heavy rainfall creating a risk of flash floods and forest runoffs, particularly on November 8-9.
- While the south is the primary focus, heavy rain is also forecast for parts of the Northern and Central regions on November 7.
- Mariners in the Gulf of Thailand and Andaman Sea are advised to avoid sailing through thunderstorm areas, where wave heights may exceed 2 meters.
The Thai Meteorological Department issued Announcement No. 12 at 5.00 am on November 7, 2026, warning that upper Thailand remains subject to volatile weather conditions including thunderstorms, strong gusts, and isolated heavy rainfall.
High-Risk Areas Facing Heavy to Very Heavy Rains
Between November 7 and 9, 2026, the southern region will experience an increase in rainfall, featuring heavy downpours in many areas and very heavy rain in some locations.
Particularly during November 8–9, citizens in high-risk zones must exercise caution regarding accumulated rainfall that may trigger flash floods and sudden forest runoffs. Additionally, mariners across both the Gulf of Thailand and the Andaman Sea are advised to avoid sailing through thunderstorm-affected areas, where wave heights may exceed 2 metres.
Daily Regional Risk Breakdown
According to the Meteorological Department, the specific areas expected to experience heavy to very heavy rain include:
November 7, 2026: Heavy rain is anticipated in the Northern region (Mae Hong Son, Chiang Mai, Chiang Rai, Lamphun, Lampang, Phayao, Phrae, Sukhothai, Tak, and Kamphaeng Phet), Central region (Nakhon Sawan, Uthai Thani, Chai Nat, Suphan Buri, Kanchanaburi, and Ratchaburi), and Southern region (Phetchaburi, Prachuap Khiri Khan, Chumphon, Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla, Pattani, Yala, Narathiwat, Trang, and Satun).
November 8, 2026: Very heavy rain is expected in Nakhon Si Thammarat, Songkhla, and Narathiwat, while heavy rain will affect Prachuap Khiri Khan, Surat Thani, Chumphon, Phatthalung, Pattani, Yala, Trang, and Satun.
November 9, 2026: Very heavy rain is projected for Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla, Pattani, and Narathiwat, with heavy rain forecast for Phetchaburi, Prachuap Khiri Khan, Chumphon, Yala, Ranong, Phang Nga, Phuket, Krabi, Trang, and Satun.
The Meteorological Department will release its next announcement at 5.00 pm on the same day. Further details are available via www.tmd.go.th or through the 24-hour hotline at 1182.
