The Meteorological Department issued Announcement No. 11 listing provinces at risk of "heavy to very heavy rain" with impacts lasting until 30 July. It warns the public to monitor accumulated rainfall, which may lead to flash floods and mountain runoff.
On 28 July 2026, the websiteof the Meteorological Departmentissued Announcement No. 11 concerning heavy to very heavy rain across Thailand. It stated that from 28 to 30 July 2026, many areas in Thailand will experience heavy rain, with some places seeing very heavy rainfall. This affects the North, Northeast, Central, East, and the western coast of the South. The situation is due to a monsoon trough passing over the North and Upper Northeast, combined with a fairly strong southwest monsoon covering the Andaman Sea, Thailand, and the Gulf of Thailand. The public is advised to be cautious of dangers from heavy to very heavy rain and accumulated rainfall that could cause flash floods and mountain runoff, especially in hillside areas near waterways and low-lying areas.
Regarding sea conditions, the Upper Andaman Sea has fairly strong winds with waves 2-3 meters high; in areas with thunderstorms, waves can exceed 3 meters. The Upper Gulf of Thailand and Lower Andaman Sea have waves about 2 meters high, with waves above 2 meters during thunderstorms. Mariners in the Andaman Sea and Gulf of Thailand should navigate with caution and avoid areas with thunderstorms. Small boats in the Upper Andaman Sea should refrain from leaving shore during these days.
For safety and to minimize potential impacts, the public is advised to plan their activities and travel carefully during this period. It is recommended to follow announcements from the Meteorological Department and access information via their website.http://www.tmd.go.thor by calling 0-2399-4012-13 and hotline 1182, available 24 hours.
28 July 2026
29 July 2026
30 July 2026
