The Meteorological Department summarizes weather conditions and storm monitoring for May 2026, reporting increased but uneven rainfall early in the month, with clearer signs of entering the monsoon season by mid-month.
On 4 May 2026, it was reported that the official fan pageof the Meteorological Departmentsummarized the weather forecast and storm monitoring for May 2026 as follows:
In early May 2026, Thailand begins to see increased rainfall, though it remains uneven. Daytime temperatures remain hot, while afternoon to evening periods may bring thunderstorms and occasional summer storms in some areas.
From 4 to 6 May 2026, there is a warning of summer storms nationwide as cold air masses meet hot air, increasing the risk of severe thunderstorms.
From 8 to 12 May 2026, rain continues with shifting wind directions, causing increased rainfall on the Andaman coast of southern Thailand.
From 15 to 17 May 2026, mid-May marks the start of the seasonal transition, with stronger indications of the upcoming monsoon season.
Farmers and the public are advised to plan water storage and monitor unstable weather closely, as forecasts may shift during this transitional period. Regular observation of weather changes and close attention to forecasts are recommended.
Thanks to the Meteorological Department