TMD forecasts torrential rain in 5 provinces on October 27
Southern Thailand faces flash floods through October 28, while Bangkok and other upper regions remain at risk of heavy rain and strong gusts
- The Thai Meteorological Department (TMD) issued a warning for torrential rain in five southern provinces on October 27.
- The five provinces specifically forecast to receive torrential rain are Chumphon, Surat Thani, Nakhon Si Thammarat, Phang Nga, and Phuket.
- Authorities have cautioned that the accumulated rainfall could lead to flash floods, rapid runoff, and waterlogging in the affected areas.
- The warning also notes that heavy rainfall will continue in the South through October 28.
The Thai Meteorological Department (TMD) issued warning No. 8 at 5am Thai time on October 27, 2026, forecasting torrential rain in five southern provinces and continued heavy rainfall in the South through October 28.
The warning, numbered 280/2569, forecasts persistent rain in southern Thailand on October 27–28, with heavy falls in many areas and torrential downpours in some places. The TMD cautioned that accumulated rainfall could cause flash floods, rapid runoff and waterlogging, particularly on foothill slopes near waterways and in low-lying areas.
Residents in southern areas already affected by flooding were advised to watch for rising water levels and closely follow instructions from local authorities.
Five southern provinces face torrential rain on October 27
The TMD forecasts torrential rain in Chumphon, Surat Thani, Nakhon Si Thammarat, Phang Nga and Phuket on October 27.
The heavy-rain forecast for October 27 also covers the following areas:
North: Heavy rain is forecast on October 27 in Chiang Mai, Chiang Rai, Lamphun, Lampang, Phayao, Nan, Tak, Kamphaeng Phet and Phetchabun.
Central region: Heavy rain is forecast on October 27 in Nakhon Sawan, Uthai Thani, Lop Buri, Saraburi, Kanchanaburi, Ratchaburi and Nakhon Pathom, as well as Bangkok and surrounding provinces.
East: Heavy rain is forecast on October 27 in Nakhon Nayok, Chon Buri, Rayong, Chanthaburi and Trat.
South: Heavy rain is forecast on October 27 in Phatthalung, Songkhla, Pattani, Yala, Narathiwat, Ranong, Krabi, Trang and Satun.
Ten southern provinces face heavy rain on October 28
The TMD’s forecast for October 28 identifies ten southern provinces at risk of heavy rain. They are Chumphon, Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla, Pattani, Narathiwat, Ranong, Phang Nga and Phuket.
Upper Thailand faces thunderstorms despite easing rain
Rainfall in upper Thailand is expected to begin decreasing on October 27, but thunderstorms, strong gusts and isolated heavy rain will remain possible, according to the TMD.
People in upper Thailand were advised to avoid open spaces, large trees and unsecured billboards during thunderstorms and strong winds.
The TMD attributed the unsettled conditions to a high-pressure system, or cold air mass, extending from China over upper Thailand and the South China Sea. Easterly winds are carrying moisture from the South China Sea and the Gulf of Thailand into upper Thailand, while the monsoon trough over the South is strengthening.
Storm waves could exceed two metres in Gulf and Andaman Sea
Waves in the Gulf of Thailand and the Andaman Sea are forecast to exceed two metres in areas experiencing thunderstorms, the TMD warned. Mariners should navigate cautiously and avoid sailing through thunderstorms.
The TMD advised the public to plan daily activities and journeys carefully during the warning period and continue monitoring official weather announcements.
Weather information is available around the clock through the TMD website, by calling 02-399-4012 or 02-399-4013, or through the 1182 hotline.
The TMD scheduled its next warning for 5pm Thai time on October 27.
