Weekly Weather Summary
Previous :
May 25, 2020 - May 31, 2020Max. Rainfall AmountMax. Temperature
Thailand
The moderate southwest monsoon prevailed over the Andaman Sea and Thailand throughout the week. In addition, the low pressure cell covered Laos and upper Vietnam on the first day and the last day of the week. Moreover, the monsoon trough lay across Myanmar, Laos and upper Vietnam toward the low pressure cell in the Gulf of Tonkin on 26 and 27 May. After that, the high pressure area from China extended its ridge to cover Laos and Vietnam causing the monsoon trough moved southward to lie across upper northern and upper northeastern parts. These conditions caused abundant rainfall over Thailand nearly the whole week and thunderstorm with gusty wind was reported in some areas of upper Thailand.    
Northern Part
Isolated rain with heavy rainfall in some areas during the first half of the week then scattered to fairly widespread rain with heavy to very heavy rainfall in some areas. Thunderstorm with gusty wind occurred at Kamphaeng Phet province on 26 May, at Pichit province on 26, 28 and 29 May, at Sukhothai province on 27 May, at Nan, Lampang, Phayao and Phetchabun provinces on 28 May, at Phitsanulok province on 30 May. 103.0 mm at Khao Krayang Forest Plantation Phitsanulok on 30 May 
Northeastern Part
Scattered rain except for fairly widespread rain on 25, 28 and 29 May. Heavy to very heavy rainfall occurred in some areas throughout the week. Thunderstorm with gusty wind occurred at Surin, Amnat Charoen, Si Sa Ket and Nakhon Ratchasima provinces on 25 May, at Kalasin province on 27 May, at Loei province on 30 May. 200.0 mm at Nam Som Udon Thani on 28 May 
Central Part
Scattered to fairly widespread rain with heavy rainfall in some areas during the beginning and the middle of the week then isolated rain. Thunderstorm with gusty wind occurred at Nakhon Sawan and Chainat provinces on 26 and 28 May, at Saraburi and Lopburi provinces on 28 May. 80.0 mm at Mueang Ratchaburi on 29 May 
Eastern Part
Fairly widespread with heavy to very heavy rainfall in some areas except for scattered rain on 27 and 30 May. 114.0 mm at Ban Khai Rayong on 29 May 
Southern Part (East Coast)
Scattered to fairly widespread rain with heavy to very heavy rainfall in some areas except for isolated rain with heavy rainfall in some areas on 30 May. 101.4 mm at Yarang Pattani on 31 May 
Southern Part (West Coast)
Isolated rain on the first day of the week then fairly widespread rain with heavy to very heavy rainfall in some areas. 100.4 mm at Mueang Phuket on 30 May 
Metropolitan
Isolated to scattered rain with heavy rainfall in some areas except for fairly widespread rain with heavy to very heavy rainfall in some areas on 26, 29 and 30 May. 162.8 mm at Wat Bang Bon School Khet Bang Bon on 30 May (90.2 mm at Nakhon Pathom Agricultural Extension Office Nakhon Pathom on 30 May)  
Weekly total Rainfall and Weekly mean minimum temperature Map
Issued Date June 1, 2020