Phuket waters forecast to reach 3-metre waves as heavy rain warning issued
The Thai Meteorological Department forecasts heavy rain across parts of Thailand’s South West Coast and waves of up to 3 metres from Phuket northwards.
The Thai Meteorological Department (TMD) has warned of heavy rain and rough seas affecting Phuket and other parts of Thailand’s South West Coast on 16 August 2026.
Heavy rain is forecast across 60% of the region, particularly in Ranong and Phang Nga. Temperatures are expected to range from 24 to 27 degrees Celsius overnight and reach 30 to 33 degrees Celsius during the day.
From Phuket northwards, southwesterly winds of 20 to 40 kilometres per hour are forecast to produce waves of 2 to 3 metres, rising above 3 metres in thundery areas. From Krabi southwards, waves are expected to reach 1 to 2 metres and rise above 2 metres in thunderstorms.
TMD has warned residents in affected areas to watch for heavy and accumulated rainfall that could cause flash floods, forest runoff and overflowing riverbanks, particularly near foothills, waterways and low-lying land. Vessels in the Andaman Sea and Gulf of Thailand have been advised to navigate cautiously and avoid thundery areas, while small boats in the upper Andaman have been told to remain ashore.
