Thailand
28 September 2026 - 04 October 2026The rather strong southwest monsoon prevailed over the Andaman Sea, the southern region, and the Gulf of Thailand on the first day of the week before weakening. Whereas, the southerly and southeasterly winds prevailed over the lower northeastern region, the eastern region, and the Gulf of Thailand at the middle and the end of the week. Additionally, the high-pressure area from China extended its ridge to cover the upper northeastern region on the last day of the week. These conditions caused rainfall in upper Thailand, mostly in the first half and on the last day of the week. The southern region experienced rainfall almost the week, mainly along the west coast.
Region Weather Summary
28 September 2026 - 04 October 2026Northern
Fairly widespread rain at the beginning of the week then decreasing in rainfall to isolated to scattered rain. Heavy rainfall occurred in some areas during 28-29 Sep. and on 4 Oct. Flooding continued from the last period in Phetchabun, Kamphaeng Phet and Phitsanulok provinces. Floodind was reported in Tak province on 28 Sep.
| Max Rain | Max. Temp. | Min. Temp. |
| 90.0 mm at Ban Khok Uttaradit on 4 Oct. |
Northeastern
Fairly widespread rain on the first day and the last day of the week. Isolated rain on the rest days. Heavy rainfall occurred in some areas almost the week and very heavy rainfall in some areas on 4 Oct. Flooding was reported in Chaiyaphum , Buriram, Surin, and Yasothon provinces during 28 Sep.- 4 Oct.
| Max Rain | Max. Temp. | Min. Temp. |
| 151.0 mm at Mueang Amnat Charoen Amnat Charoen on 4 Oct. |
Central
Scattered to fairly widespread rain in the first half of the week then decreasing in rainfall to isolated rain with heavy rainfall in some areas on 28, 29 Sep. and 3 Oct. Flooding continued from the last period in Lop Buri, Ratchaburi, Nakhon Sawan, Suphan Buri, Phra Nakhon Si Ayutthaya, Uthai Thani, Ang Thong, Saraburi, Chai Nat, Sing Buri and Kanchanaburi provinces during 28 Sep.- 4 Oct.
| Max Rain | Max. Temp. | Min. Temp. |
| 60.0 mm at Mae Poen Nakhon Sawan on 28 Sep. |
Eastern
Scattered rain almost the week with heavy rainfall in some areas on 2 Oct. and very heavy rainfall in some areas on 28 Sep. Flooding were reported in Prachin Buri, Rayong, Chanthaburi, Trat, Nakhon Nayok, Chon Buri, Chachoengsao and Sa Kaeo provinces during 28 Sep.- 4 Oct.
| Max Rain | Max. Temp. | Min. Temp. |
| 169.4 mm at Ban Khai Rayong on 28 Sep. |
Southern (East Coast)
Scattered rain with heavy rainfall in some areas almost the week. Flooding was reported in Phetchaburi province during 1-4 Oct.
| Max Rain | Max. Temp. | Min. Temp. |
| 86.0 mm at Hua Sai Nakhon Si Thammarat on 4 Oct. |
Southern (West Coast)
Fairly widespread rain with heavy rainfall in some areas almost the week and very heavy rainfall in some areas on 30 Sep.
| Max Rain | Max. Temp. | Min. Temp. |
| 110.0 mm at Hat Samran Trang on 30 Sep. |
Bangkok Metropolitan
Fairly widespread rain on the first day and the last day of the week. Isolated to scattered rain on the rest days with heavy rainfall in some areas on 28 Sep., 1-2 Oct. and 4 Oct. Flooding continued from the last period in Bangkok, Samut Prakan, Nakhon Pathom, Nonthaburi and Pathum Thani provinces. Hail was reported in Bangkok Metropolis on 1 Oct.
| Max Rain | Max. Temp. | Min. Temp. |
| 68.0 mm at Wat Thong Udonsilp Wittayakarn School Khet Taling Chan on 1 Oct. (48.6 mm at Wat Khemabhirataram School, Mueang Nonthaburi Nonthaburi on 1 Oct.) |
Announcement Date 05 October 2026 11:41