Meteorological Department Releases 2026 Rainy Season Timeline, Forecasts Rainfall Through October

The Meteorological Department releases a timeline "2026 Rainy Season" After officially entering the rainy season on 15 May 2026 until mid-October, rainfall volume is forecasted, including periods of heavy rain with risks of flash floods and forest runoff in some areas.

It was reported that the Meteorological Department's Facebook page "released the 2026 rainy season timeline," stating the rainy season is expected to run from 15 May 2026 until mid-October as follows.

Mid-May to mid-June

• Rain increases and continues steadily.
• Rainfall covers 40-60% of the area.
• Heavy rain occurs in some locations.
• In the Eastern and Western Southern regions, rain covers 60-80% of the area.
• Some places experience heavy to very heavy rain.

Late June to early July

• Rainfall amount and distribution decrease.
• Water shortages may occur in some areas, especially outside irrigation zones.

August to September

• Rainfall covers 60-80% of the area.
• Heavy rain occurs in many areas.
• Some places experience very heavy rain.
• There is a risk of flash floods, forest runoff, and riverbank overflow in some areas.

October

• Rain decreases in the Northern and Northeastern regions.
• Cooler mornings begin, especially in the upper parts of these regions.
• Central, Eastern, and Southern regions continue to receive rainfall.
• Some places have heavy to very heavy rain.

Warning: August and September have heavy, dense rainfall; please be cautious of accumulated rain, flash floods, and forest runoff.

Information courtesy of FacebookMeteorological Department