Weekly Weather Summary
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January 11, 2021 - January 17, 2021Max. Rainfall AmountMax. Temperature
Thailand
The active high pressure area from China extended its ridge to cover upper Thailand during the beginning of the week and later weakened then another rather active high pressure area from China extended its ridge to cover the mentioned areas on the last day of the week. These conditions caused cool to cold weather in most regions of Thailand almost the week especially very cold weather in some areas of the northern and northeastern parts on 12-13 Jan. For the southern part, with the prevailing of the active northeast monsoon over the Gulf of Thailand and the southern part during the first half of the week caused abundant rainfall during the mentioned time then rainfall has decreased.    
Northern Part
Generally cool weather with cold weather in some areas during the beginning of the week then the temperature dropped until generally cold weather with very cold weather in some areas of Tak province on 13 Jan. During the weekend, generally cold weather in the upper portion whereas cold weather in some areas in the lower portion. Cold to very cold weather in mountainous areas and mountain tops. Isolated light rain during the beginning of the week and on the last day of the week. 4.3 mm at Mae Jan Chiang Rai on 11 Jan.  7.6 º C at Umphang Tak on 13 Jan. (1.2 º C at Kew Mae Pan, Doi Inthanon Chiang Mai on 17 Jan.)  
Northeastern Part
Generally cold weather during the beginning and the middle of the week with very cold weather in some areas of the upper portion during 12 – 13 Jan. then the temperature respectively increased but cold weather remained in several areas on 16 Jan. and generally cool weather on the last day of the week. Cold to very cold weather in mountainous areas and mountain tops. Light rain occurred in some areas on 12 Jan. 5.0 mm at Phu Kradueng National Park Loei on 12 Jan.  6.5 º C at Nakhon Phanom Agromet. Stn. Nakhon Phanom on 13 Jan. (2.0 º C at Phu Ruea National Park Loei on 12 Jan.)  
Central Part
Cold weather nearly the whole areas during 12-15 Jan. with cold weather in some areas on 17 Jan. Generally cool weather for the rest days. 10.9 º C at Chai Badan Lopburi on 13 Jan. 
Eastern Part
Generally cool weather throughout the week with cold weather in some areas mainly in the upper portion on 12-15 Jan. Light rain occurred in some areas on the last day of the week. 9.0 mm at Sanam Chai Khet Chachoengsao on 17 Jan.  12.7 º C at Sanam Chai Khet Chachoengsao on 13 Jan. (7.3 º C at Khao Kheow, Mueang Nakhon Nayok on 12 Jan.)  
Southern Part (East Coast)
Cool weather in several areas throughout the week with cold weather in some areas of the upper portion during the middle of the week. Scattered rain during the first half of the week then rainfall has decreased until isolated rain. Heavy rainfall occurred in some areas on 11 and 16 Jan. 40.0 mm at Sathing Phra Songkhla on 11 Jan.  13.5 º C at Nong Phlub Agromet. Stn. Prachuap Khiri Khan on 14 Jan. 
Southern Part (West Coast)
Cool weather in several areas almost the week. Isolated rain during the beginning of the week and on the last day of the week. 22.5 mm at Khao Chong Botanical Garden Trang on 11 Jan.  18.9 º C at Mueang Ranong on 14 Jan. 
Metropolitan
Generally cool weather almost the week with cold weather in some areas of vicinity on 12-16 Jan. 16.1 º C at Don Muang Airport Khet Don Muang on 13 Jan. (12.8 º C at Kamphaeng Saen Nakhon Pathom on 14 Jan.)  
Weekly total Rainfall and Weekly mean minimum temperature Map
Issued Date January 18, 2021