"Meteorological Department" Issues 10th announcement warning several provinces "Heavy to very heavy rain" Possible flash floods and flash floods; check affected provinces
31 May 2026 GMT+7Meteorological Department websiteAnnouncement regardingHeavy to very heavy rain over Thailand and strong winds over the Andaman Sea, 10th announcement (effective until 1 June 2026 GMT+7)It states that Thailand continues to experience rain with heavy rain in some areas, including very heavy rain in parts of the western southern region.
This is due to the southwest monsoon covering the Andaman Sea, the southern region, and the Gulf of Thailand with considerable strength, combined with a monsoon trough passing through upper Thailand. The public in Thailand is advised to prepare for dangers from heavy to very heavy rain and accumulated rainfall that may cause flash floods and flash floods, especially in high-risk areas near waterways and lowlands.
For the upper Andaman Sea, from Phuket province northwards, winds are quite strong with waves 2-3 meters high; in areas with thunderstorms, waves exceed 3 meters. In the lower Andaman Sea, from Krabi province southwards, waves reach about 2 meters, with waves over 2 meters in thunderstorm areas. Mariners in these areas should navigate with caution and avoid sailing in areas with thunderstorms. Small boats in the upper Andaman Sea should refrain from venturing out during this period.
However, the public is urged to follow announcements from the Meteorological Department and can track updates on their website http://www.tmd.go.th or by calling 0-2399-4012-13 and 1182, available 24 hours.
31 May 2026 GMT+7
1 June 2026 GMT+7
Source: Meteorological Department website