Thailand Faces Heavy Rain Warning Through October 25

Key summary

The Thai Meteorological Department has issued a warning for heavy to very heavy rain across Thailand from Sunday, October 18, 2026, through October 25. Continuous rainfall is expected in the South and East regions on October 18–20, with heavier falls in some areas. Rainfall will increase in the lower Northeast, Central region (including Bangkok), East, and upper South from October 21–25, bringing heavy to very heavy rain and isolated gusty winds. The weather is initially influenced by a monsoon trough over the lower South and southwest monsoon over the lower Andaman Sea, with the trough shifting northwards later in the period while a high-pressure system or cold air mass from China extends over the upper North, upper Northeast, and South China Sea. Authorities warn of flash floods, sudden runoff, and mudslides, particularly on foothill slopes near waterways and in low-lying areas, advising against travel along routes prone to repeated flooding.