Meanwhile, the moderate northeast monsoon prevails over the Gulf and the South. Waves are likely to be 2 metres high in the Gulf and above 3 metres in areas experiencing thundershowers, the department said, advising all ships to proceed with caution.
The department also said an active low pressure system over the lower South China Sea is expected to move to the Gulf during December 24 and 25. More rain and isolated heavy to very heavy showers will be likely in Chumphon, Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla, Pattani, Yala, Narathiwat, Ranong and Phang Nga. People in the South should beware of severe conditions that may cause flash floods, it added.
Here’s the weather forecast for the next 24 hours:
North: Cold to cool weather with light fog in the morning; temperature lows of 10-16 degrees and highs of 24-30 degrees Celsius. Temperature on hilltops is likely to drop to 3-10 degrees, with frost in some areas.
Northeast: Cold to cool weather with light fog in the morning; temperature lows of 10-16 degrees and highs of 24-26 degrees Celsius. Temperature on hilltops is likely to drop to 3-10 degrees, with frost in some areas.
Central: Cool weather with light fog in the morning; temperature lows of 16-20 degrees, highs of 27-30 degrees.
East: Cool weather with light fog in the morning; temperature lows of 16-21 degrees, highs of 29-31 degrees; waves 2 metres high and over 2 metres offshore.
South (east coast): Partly cloudy with thundershowers in 20 per cent of the area; temperature lows of 21-25 degrees, highs of 29-33 degrees Celsius; waves 2 metres high and 3 metres during thundershowers.
South (west coast): Partly cloudy with thundershowers in 10 per cent of the area; temperature lows of 21-25 degrees, highs of 30-33 degrees; waves 2 metres high and over 2 metres during thundershowers.
Bangkok and surrounding areas: Cool weather with light fog in the morning; temperature lows of 20-22 degrees, highs of 28-31 degrees Celsius.