TMD Warns of Heavy Rain October 18-25, 2026

Thairath•Society•37m ago

Reader Briefing

The Thai Meteorological Department has issued a warning for heavy to very heavy rain and strong winds across various regions from October 18 to 25, 2026.

•The Thai Meteorological Department issued Announcement No. 2 regarding heavy to very heavy rain.
•Heavy rain is expected in the South and East from October 18-20, 2026.
•Rain will increase in the Lower Northeast, Central region, Bangkok and vicinity, East, and Upper South from October 21-25, 2026.
•The warning includes risks of flash floods, forest run-off, and landslides.

Overview

•The Thai Meteorological Department warning is effective from October 18 to October 25, 2026, ending at 17:00.
•The Thai Meteorological Department warns of heavy to very heavy rain and strong winds in the South and East between October 18-20, 2026.
•The Thai Meteorological Department warns of increased heavy to very heavy rain and strong winds in the Lower Northeast, Central region, Bangkok and vicinity, East, and Upper South between October 21-25, 2026.
•Heavy rain and accumulated rainfall may cause flash floods, forest run-off, and landslides, especially in slope areas near waterways and low-lying areas.
•The weather is caused by a monsoon trough passing through the Lower South and a southwest monsoon covering the Lower Andaman Sea, followed by the trough moving to the Central South.
•High pressure or cold air masses from China will cover the Upper North, Upper Northeast, and South China Sea.
•The Thai Meteorological Department warns that waves in the Andaman Sea and Gulf of Thailand may exceed 3 meters in areas with thunderstorms.
•The Thai Meteorological Department advises the public to plan travel carefully and monitor updates via the official website or hotlines.

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Source: Thairath (Original)

Key Entities

Organization

Thai Meteorological Department(กรมอุตุนิยมวิทยา)ℹ️

The government agency that issued the weather warning announcement.

Place

Thailand(ประเทศไทย)ℹ️

The country where the heavy rain warning is issued.

Bangkok(กรุงเทพมหานคร)ℹ️

An area expected to have increased rain and heavy to very heavy rain between October 21-25, 2026.

Andaman Sea(ทะเลอันดามัน)ℹ️

A sea area where the southwest monsoon covers the lower part and waves may exceed 3 meters.

Gulf of Thailand(อ่าวไทย)ℹ️

A sea area where waves may exceed 3 meters in areas with thunderstorms.

China(ประเทศจีน)ℹ️

The origin of high pressure or cold air masses covering parts of Thailand.

South China Sea(ทะเลจีนใต้)ℹ️

An area covered by high pressure or cold air masses from China.