Thai Meteorological Department Issues Heavy Rain Warnings for Southern Provinces and Upper Thailand

Key summary

The Thai Meteorological Department (TMD) issued a warning at 5am Thai time on 24 October 2026 regarding severe weather conditions expected across the country. Persistent downpours are forecast to bring very heavy rain to five southern provinces on 25 October, with threats of flash floods continuing through 28 October. Additionally, Advisory No 2 predicts thundershowers, gusty winds, and isolated heavy rain for upper Thailand from 25 to 27 October. The unsettled weather in the north is attributed to a cold air mass extending from China as the nation transitions from the rainy season to the cool season, while a strengthening monsoon trough drives heavier rainfall in the south. Accumulated rainfall between 24 and 28 October poses risks of flash floods, rapid run-off, and waterlogging, especially on foothill slopes, near waterways, and in low-lying areas. Residents and travelers in upper Thailand are advised to avoid open areas, large trees, and unsecured advertising hoardings during the thundershowers and gusty winds. The daily outlook places northeastern provinces under heavy rain warnings for 25 October, with northern, central, and eastern areas affected on 26 October, while Bangkok and surrounding provinces face heavy rain on both 26 and 27 October. Waves in the Gulf of Thailand and Andaman Sea could exceed two metres in areas experiencing thundershowers, prompting a cautionary advisory for mariners to navigate carefully and avoid sailing through those zones. The TMD advises all residents and travelers to plan journeys carefully and monitor the latest warnings, noting that forecasts may change. The next advisory is scheduled for 5pm Thai time on 24 October 2026.