Thailand
19 JANUARY 2026 - 25 JANUARY 2026The weak high-pressure area covered upper Thailand and the South China Sea at the beginning of the week. After that, another moderate high-pressure area from China extended its ridge to cover the mentioned areas. Additionally, the westerly wind from Myanmar moved to cover upper northern region and upper Laos at the beginning of the week and the southerly wind prevailed over lower central and eastern regions during the first half of the week. These conditions caused cool weather over upper Thailand, especially decreasing temperature during the second half of the week that resulted in cold weather mainly in the northern and northeastern regions. Rainfall was observed in some areas of central and eastern regions. In the southern region, the moderate northeast monsoon prevailed over the Gulf of Thailand, the southern region and the Andaman Sea, causing rainfall in some areas mainly along east coast.
Region Weather Summary
19 JANUARY 2026 - 25 JANUARY 2026Northern
Cold weather nearly the whole areas mainly in the upper portion. Cold to very cold weather in the mountainous areas and mountain tops. Frost was reported in Chiang Mai province on 25 Jan.
| Max Rain | Max. Temp. | Min. Temp. |
| 9.1 º C at Thung Chang Nan on 25 Jan. (1.0 º C at Kiew Mae Pan, Doi Inthanon, Chom Thong Chiang Mai on 25 Jan.) |
Northeastern
Cool weather in general with very cold weather in some areas in the upper portion during the first half of the week then decreasing temperature with cold weather in several areas. Cold weather in the mountainous areas and mountain tops.
| Max Rain | Max. Temp. | Min. Temp. |
| 12.0 º C at Mueang Bueng Kan on 24 Jan. (7.0 º C at Phu Luang Wildlife Sanctuary, Phu Rua Loei on 24,25 Jan.) |
Central
Cool weather in most of areas during the first half of the week then decreasing temperature and cool weather in general with very cold weather in some areas. Isolated rain during the first half of the week.
| Max Rain | Max. Temp. | Min. Temp. |
| 13.2 mm at Mueang Suphan Buri Suphan Buri on 21 Jan. | 15.6 º C at Thong Pha Phum Kanchanaburi on 25 Jan. |
Eastern
Cool weather in some areas during the first half of the week then decreasing temperature and cool weather in general with cold weather in some areas. Isolated to scattered rain with heavy rainfall in some areas on 19 Jan.
| Max Rain | Max. Temp. | Min. Temp. |
| 39.1 mm at Phliu Agromet. Stn. Klung Chanthaburi on 19 Jan. | 16.0 º C at Sanam Chai Khet Chachoengsao on 23 Jan. (12.8 º C at Khao Kheow, Mueang Nakhon Nayok Nakhon Nayok on 25 Jan.) |
Southern (East Coast)
Cool weather in some areas during the first half of the week then decreasing temperature and cool weather in general with cold weather in some areas. Isolated to scattered rain with heavy rainfall in some areas on 19 Jan.
| Max Rain | Max. Temp. | Min. Temp. |
| 48.4 mm at Tamod Phattalung on 25 Jan. | 15.5 º C at Nong Plub Agromet. Stn., Hua Hin Prachuap Khiri Khan on 25 Jan. |
Southern (West Coast)
Cool weather in several areas. Isolated to scattered rain for few days.
| Max Rain | Max. Temp. | Min. Temp. |
| 29.7 mm at Wang Thang Rubber Research Station, Thai Mueang Phang-nga on 19 Jan. | 20.5 º C at Mueang Satun on 19 Jan. |
Bangkok Metropolitan
Cool weather in some areas during the first half of the week then decreasing temperature and cool weather in most of areas. Isolated rain during the first half of the week.
| Max Rain | Max. Temp. | Min. Temp. |
| 18.3 mm at Triamudomsuksanomklao School Khet Saphan Sung on 21 Jan. ( 24.2 mm at Nakhon Pathom Agromet. Stn Nakhon Pathom on 20 Jan.) | 20.2 º C at Bang Na Agromet Stn. Khet Bang Na on 25 Jan. ( 16.6 º C at Kamphaeng Saen Nakhon Pathom on 23 Jan.) |
Announcement Date 26 January 2026 10:51