Cool season this year will start about two weeks later than usual and is expected to be slightly warmer than average, the Thai Meteorological Department (TMD) announced on Thursday.
The average minimum temperature in upper Thailand will be around 21 degrees Celsius — slightly warmer than the historical average of 19.9°C and last year's average of 20.7°C.
While some parts of the North and Northeast will still see temperatures drop to 7 to 8°C, the average minimum temperature in Bangkok is expected to be around 18 to 20°C, with surrounding provinces experiencing lows of about 16 to 18°C.
The weather agency said the coolest period will be between mid-December and early February.
Although mountain areas in the country's upper regions will still experience frost and cold, conditions in the South are expected to be milder and wetter, especially along the eastern coast between November and December.
Heavy rainfall could cause flash floods and cause rivers to overflow, while waves in the Gulf of Thailand may reach 2 to 3 metres, potentially rising to 4 to 5m during tropical storms. The Andaman Sea will see waves of 1 to 2m.
