TMD Warns of Heavy Rain, Flash Floods in Southern Thailand
The Thai Meteorological Department has issued a heavy rain warning for Southern Thailand on November 8-9, with very heavy downpours expected in provinces including Phuket, Krabi, Surat Thani, and Nakhon Si Thammarat. Authorities warn of flash floods and forest runoff in vulnerable areas, while waves in the Andaman Sea and Gulf of Thailand may exceed two meters, prompting advisories for boats to remain cautious or stay in port.
The Thai Meteorological Department issued Announcement No. 14 (297/2569) at 05:00 on November 8, 2026, warning of changing weather conditions in upper Thailand and heavy to very heavy rain in the South from November 8-9. Rain will decrease in upper Thailand, though isolated thunderstorms remain likely, mainly in western parts of the North and Central regions. The public should watch for thunderstorm hazards.
From November 8-9, rainfall will intensify across the South with heavy rain in many areas and very heavy rain in some places. Accumulated rainfall may trigger flash floods and forest runoff, particularly in foothill areas near waterways and low-lying zones. This is due to another high-pressure system or cold air mass from China spreading over upper Thailand and the South China Sea, strengthening easterly winds over Thailand and the Gulf.
In the Andaman Sea and Gulf of Thailand, waves will exceed two meters in areas with thunderstorms. Boat operators in both bodies of water should check routes, proceed with caution, and avoid sailing in thunderstorm areas. The public is advised to plan activities and travel carefully during this period and monitor TMD announcements continuously via www.tmd.go.th or hotlines 0-2399-4012-13 and 1182 (24 hours). The next announcement will be issued at 17:00 on November 8.
Provinces forecast to receive very heavy rain on November 8: Nakhon Si Thammarat, Songkhla, and Pattani. Heavy rain expected in: Prachuap Khiri Khan, Chumphon, Surat Thani, Phatthalung, Yala, Narathiwat, Trang, and Satun.
On November 9, very heavy rain forecast for: Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla, Pattani, and Narathiwat. Heavy rain expected in: Phetchaburi, Prachuap Khiri Khan, Chumphon, Yala, Ranong, Phang Nga, Phuket, Krabi, Trang, and Satun.
