By THE NATION
Ships are advised to proceed with caution. Run-off from downpours will drain slowly and flash flooding on the Gulf side of the coast is likely.
The moderate high pressure system keeps upper Thailand dry but cool with minimum temperatures of 15-21 °C and frost in some parts. It will be cold to very cold on mountaintops with minimum temperatures of 5-15 °C.
The weather forecast for the next 24 hours is as follows:
Northern region: Cool in the morning, temperature lows of 16-20 degrees and highs of 31-35 degrees Celsius. Temperature likely to drop to 5-12 degrees on hilltops with frost in parts.
Northeastern region: Cool and foggy in the morning, lows 17-22 degrees and highs of 32-34 degrees Celsius. Temperature likely to drop to 9-15 degrees on hilltops.
Central region: Cool in the morning; lows of 20-23 degrees, highs 32-35 degrees Celsius.
Eastern region: Cool in the morning; lows 21-25 degrees, highs 34-36 degree Celsius; wave height 1-2 metres.
Southern region (east coast): Cloudy with thunder showers in 60 per cent of the area and heavy rain in parts; lows of 23-26 degrees, high 29-33 degrees Celsius; wave height 2-3 metres, increasing to 3 metres during storms.
Southern region (west coast): Cloudy with thunder showers in 40 per cent of the area and heavy rain in parts; lows 23-24 degrees, highs 32-34 degree Celsius; wave height 1-2 metres, increasing to 2 metres during storms.
Bangkok and surrounding area: Partly cloudy; lows 23-25 degrees, highs 33-36 degrees Celsius.