The upper southern provinces along the Gulf of Thailand, particularly Phetchaburi, Prachuap Khiri Khan, Chumphon and Surat Thani, will have rain due to a depression from the South China Sea, according to the Meteorological Department.
Somchai Baimuang, deputy director general of the Meteorological Department, said the depression will move through Vietnam peninsular towards the Gulf of Thailand tomorrow and several southern provinces, will get wet from today to Sunday.
Rainfall may be heavy in some areas, and flooding is possible, Mr Somchai said, predicting the maximum rainfall at over 90mm—seen as "very heavy."
There will also be rain in the lower northeast, central and eastern regions which will add water in the reservoirs.
Cold breezes will cover upper Thailand on Saturday when temperatures in the North and Northeast will drop by 2-4 degrees Celsius and winds will be stronger.
Bangkokians are advised that the capital will get showers for six days from today through Tuesday.
The depression is unlikely to develop into a tropical storm.