Met Department Warns Heavy Rain, Flash Floods for South
The Thai Meteorological Department has issued a heavy rain warning for Southern Thailand from November 11-13, covering 15 provinces including Phuket, Krabi, and Surat Thani. Authorities warn of flash floods, forest runoff, and dangerous sea conditions with waves up to 3 meters. A cold front from China is also bringing cooler temperatures and strong winds nationwide.
The Thai Meteorological Department issued Announcement No. 6 on November 11, 2026, warning of heavy to very heavy rain in Southern Thailand effective through November 13, 2026. During this period, the South will experience heavy to very heavy rainfall in some areas. The public is urged to beware of dangers from accumulated continuous rain, which may trigger flash floods and forest runoff, particularly in foothill areas near waterways and low-lying zones.
Regarding wind waves, the Andaman Sea and Gulf of Thailand will see strengthening conditions. The lower Gulf will face waves 2-3 meters high, exceeding 3 meters in thunderstorm areas. Mariners in the Gulf and Andaman should navigate with caution and avoid thunderstorm areas. Small boats in the lower Gulf should refrain from leaving shore during this period.
Nationwide, temperatures will drop with strong winds, except for the upper North where thundershowers and gusty winds are expected in some areas. This is due to a strong high-pressure system or cold air mass from China spreading over upper Thailand and the South China Sea, combined with a westerly wind wave moving through Myanmar and upper Thailand, while the moderate northeast monsoon covers the Gulf, South, and Andaman Sea.
For safety and to minimize impacts, the public is advised to plan daily activities and travel carefully during this period. People should continuously monitor announcements from the Thai Meteorological Department via the website https://tmd.go.th or hotlines 0-2399-4012-13 and 1182, available 24 hours. The next announcement will be issued on November 11, 2026 at 17:00.
Affected provinces by date:
November 11, 2026 - Heavy rain: South: Chumphon, Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla
November 12, 2026 - Very heavy rain: South: Chumphon, Surat Thani, Nakhon Si Thammarat Heavy rain: South: Phatthalung, Songkhla, Pattani, Yala, Narathiwat, Ranong, Phuket, Krabi, Trang, Satun
November 13, 2026 - Very heavy rain: South: Surat Thani, Nakhon Si Thammarat Heavy rain: South: Phetchaburi, Prachuap Khiri Khan, Chumphon, Phatthalung, Songkhla, Pattani, Yala, Narathiwat, Ranong, Phang Nga, Krabi, Trang, Satun
