Heavy to Very Heavy Rain in Thailand No.17 (233/2026)

Weather Advisory

Subject: Heavy to Very Heavy Rain in Thailand

No.17 (233/2026)

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The low-pressure cell has moved to cover the Gulf of Martaban. Meanwhile the rather strong southwest monsoon prevails over the Andaman Sea, the South and the Gulf.

Heavy rain and isolated very heavy rain are likely in the North, the western portion of the Central, the East and the upper South while less rain and isolated heavy rain is likely in Bangkok and vicinity.

People in the country should beware of heavy to very heavy rains and accumulation that may cause flash floods, overflows and landslides especially along the waterways near foothills and lowlands.

The strengthening winds forces the wave in the upper Gulf and the upper Andaman Sea up to be
2-3 meters high and above 3 meters high in thundershowers. In the lower Gulf and the lower Andaman Sea, the waves are likely about 2 meters high and above 2 meters high in thundershowers. All ships should proceed with caution and keep off thundershowers, small boat in the upper Gulf and the upper Andaman Sea keep ashore lasting 28 September 2026.

The advisory is in effect on 27 September 2026, at 11.00 p.m.
 This next issue will be on 27 September 2026, at 5.00 a.m.

                                                                 (Signed)    Sugunyanee Yavinchan

                                                                            (Miss Sugunyanee Yavinchan)                            

                                                                                      Director-General                        

                                                                          Thai Meteorological Department