Thailand
05 December 2025 - 11 December 2025The moderate high-pressure area covered upper Thailand and the South China Sea at the beginning and the middle of the period then weakened. In addition, the easterly wind prevailed over Thailand at the beginning of the period after that the northeast monsoon prevailed over the Gulf of Thailand, the south part and the Andaman Sea at the middle and the end of the period. Moreover the low pressure cell covered the Gulf of Thailand and the southern part on the last day of the period. These conditions caused cool weather nearly the whole area over upper Thailand, especially cold weather in northern and northeastern parts mainly in the second half of the period. Rainfall was mainly observed on the first day of the period and at the end of the period. For the southern region, rainfall was reported almost the period.
Region Weather Summary
05 December 2025 - 11 December 2025Northern
Cool weather nearly the whole areas with cold weather in several areas mainly in the second half of the period. Cold to very cold weather in the mountainous areas and mountain tops. Fairly widespread rain with heavy rainfall in some areas on the last day of the period.
| Max Rain | Max. Temp. | Min. Temp. |
| 35.2 mm at Nan Agromet. Stn. Nan on 11 Dec. | 12.0 º C at Umphang Tak on 10 Dec. (5.0 º C at Doi Inthanon, Chom Thong Chiang Mai on 10,11 Dec.) |
Northeastern
Cool weather nearly the whole areas with cold weather in some areas mainly in the upper portion in the second half of period. Cold weather in the mountainous areas and mountain tops. Isolated light rain in some areas on the first day and at the end of the period.
| Max Rain | Max. Temp. | Min. Temp. |
| 6.3 mm at Pak Thong Chai Nakhon Ratchasima on 11 Dec. | 12.4 º C at Nakhon Phanom Agromet. Stn., Mueang Nakhon Phanom on 9 Dec. (9.0 º C at Phu Ruea National Park, Phu Ruea Loei on 9,10 Dec. and at Phu Luang Wildlife Sanctuary, Phu Ruea Loei on 5 Dec.) |
Central
Cool weather nearly the whole areas with cold weather in some areas on 10 Dec. Scattered to fairly widespread rain on the first day of the period and on the last day of the period. Whereas scanty rain on the rest days.
| Max Rain | Max. Temp. | Min. Temp. |
| 20.0 mm at Phaisali Nakhon Sawan on 11 Dec. | 14.9 º C at Chai Badan Lop Buri on 10 Dec. |
Eastern
Cool weather nearly the whole areas almost the period. Cold weather in the mountainous areas and mountain tops. Isolated rain on the first day of the period. Scattered rain at the end of the period.
| Max Rain | Max. Temp. | Min. Temp. |
| 20.4 mm at Na Di Prachin Buri on 11 Dec. | 17.2 º C at Sanam Chai Khet Chachoengsao on 9 Dec. |
Southern (East Coast)
Cool weather nearly the whole areas at the middle and the end of the period. Scattered to fairly widespread rain with heavy to very heavy rainfall in some areas at the beginning of the period and on the last day of the period. Isolated rain on rest days of the period. Flooding continued from the previous period in Surat Thani and Songkhla provinces.
| Max Rain | Max. Temp. | Min. Temp. |
| 120.0 mm at Chaiya Surat Thani on 11 Dec. | 17.5 º C at Hua Hin Phetchaburi on 10 Dec. |
Southern (West Coast)
Cool weather nearly the whole areas in the second half of the period. Widespread rain on the first day of the period then Isolated to scattered light to moderate rain. Flooding continued in Trang provinces.
| Max Rain | Max. Temp. | Min. Temp. |
| 29.4 mm at Mueang Phuket Phuket on 7 Dec. | 20.9 º C at Takua Pa Phangnga on 10 Dec. |
Bangkok Metropolitan
Cool weather nearly the whole areas in the second half of the period. Scattered light rain on the first day of the period and on the last day of the period.
| Max Rain | Max. Temp. | Min. Temp. |
| 15.2 mm at Wat Bang Bon School Bang Bon on 5 Dec. (6.9 mm at Sam Phran Nakhon Pathom on 5 Dec.) | 20.9 º C at Don Mueang Airport Khet Don Mueang on 10Dec. (18.4 º C at Kamphaeng Saen Nakhon Prathom on 10 Dec.) |
Announcement Date 12 December 2025 10:55