Thailand
24 August 2026 - 30 August 2026The monsoon trough lay across upper Myanmar and upper Laos extended into the tropical storm “NARRA (2619)” over the Gulf of Tonkin in the first half of the week. Afterward, it shifted southward to lie across upper northern Thailand and upper Laos extended into a low-pressure cell over the Gulf of Tonkin and upper Vietnam on 28 and 29 Aug. and extended into an active low-pressure cell over the South China Sea on the last day of the week. Moreover, the rather active southwest monsoon prevailed over the Andaman Sea, Thailand and the Gulf of Thailand throughout the week. These conditions brought plentiful rainfall in upper Thailand in the second half of the week accompanied with, flash flood and landslide were repored in some areas in the mentioned time. For the southern region, rainfall was mainly observed along the west coast of the region. By the way, the tropical storm “NARRA (2619)” over the Gulf of Tonkin made landfall at the southern coast of Guangdong, China in the morning on 26 Aug. and weakened into a tropical depression and subsequently degenerated into an active low-pressure cell in southern China.
Region Weather Summary
24 August 2026 - 30 August 2026Northern
Isolated to scattered rain in the first half of the week then increasing rainfall to fairly widespread rain with heavy rainfall in some areas on 26 Aug. and in the second half of the week. Flooding was reported in Sukhothai province on 24 Aug., Nan and Phitsanulok provinces during 24-28 Aug.
| Max Rain | Max. Temp. | Min. Temp. |
| 61.5 mm at Mae Sot Tak on 26 Aug. |
Northeastern
Isolated rain in the first half of the week then increasing rainfall to scattered to fairly widespread rain with heavy rainfall in some areas almost the week and very heavy rainfall in some areas on 30 Aug. Flooding was reported in Ubon Ratchathani province during 24-27 Aug.
| Max Rain | Max. Temp. | Min. Temp. |
| 127.0 mm at Buntharik Ubon Ratchathani on 30 Aug. |
Central
Isolated to scattered rain in the first half of the week then increasing rainfall to fairly widespread rain with heavy rainfall in some areas almost the week and very heavy rainfall in some areas on 26 Aug. Flooding was reported in Kanchanaburi province on 24 Aug. Flash flood was reported in Saraburi province on 30 Aug. Landslide was reported in Kanchanaburi province on 28 Aug.
| Max Rain | Max. Temp. | Min. Temp. |
| 163.9 mm at Sahathanakan Krungthep Border Patrol Police School, Sangkhla Buri Kanchanaburi on 26 Aug. |
Eastern
Isolated to scattered rain except for fairly widespread rain with heavy to very heavy rainfall in some areas in the second half of the week. Flooding was reported in Chanthaburi province on 28 Aug. Flash flood was reported in Trat province on 29 Aug. Gusty Wind was reported in Trat province on 28 Aug.
| Max Rain | Max. Temp. | Min. Temp. |
| 131.6 mm at Mueang Nakhon Nayok Nakhon Nayok on 29 Aug. |
Southern (East Coast)
Scattered to fairly widespread rain mainly upper portion with heavy rainfall in some areas in the almost the week.
| Max Rain | Max. Temp. | Min. Temp. |
| 69.0 mm at Phato Chumphon on 27 Aug. |
Southern (West Coast)
Fairly widespread rain at the beginning of the week then scattered rain with heavy rainfall in some areas almost the week and very heavy rainfall in some areas on 27 Aug. Gusty Wind was reported in Krabi province on 29 Aug. and Satun province on 30 Aug.
| Max Rain | Max. Temp. | Min. Temp. |
| 159.8 mm at Suk Samran Ranong on 27 Aug. |
Bangkok Metropolitan
Isolated to scattered rain on 25 and 28 Aug. and fairly widespread rain at the end of the week with heavy rainfall in some areas on 28 Aug.
| Max Rain | Max. Temp. | Min. Temp. |
| 30.6 mm at Ban Nong Rahaeng School Khet Khlong Sam Wa on 29 Aug. (44.6 mm at Pathum Thani Agromet. Stn., Khlong Luang Pathum Thani on 28 Aug.) |
Announcement Date 31 August 2026 12:04