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Phuket Weather Month by Month for Residents: Rain, Heat and Sea Conditions
Phuket has two main seasons, and the difference shapes everything from sea safety to moulds and flights. This page summarises typical rainfall, temperature and wave patterns that weather guides report. Averages hide big variation between years. Reviewed in November 2026.
The two seasons
Guides describe a dry season from about November to April and a wet southwest monsoon from May to October. Average temperatures sit around 24 to 32 degrees Celsius through the year. March and April are described as the hottest months, while the rain arrives in May and tends to peak in September and October.
Month by month
- December to February: driest and calmest, with one source quoting average rainfall of roughly 25 to 65 millimetres a month and wave heights around half a metre.
- March and April: very hot and humid, with April rainfall rising to about 127 millimetres in one dataset.
- May to October: wetter, with one dataset showing 260 to 350 millimetres a month and waves of 1.5 to 2.5 metres, and September the stormiest.
- November: the rainy season tapers off, with improving weather and a transitional rainfall figure of about 175 millimetres in the same dataset.
Rain often comes in short heavy bursts, and some days stay sunny.
What it means for daily life
- Swimming on west-coast beaches can be dangerous in the monsoon. Follow flags. See the beach safety guide.
- Boat tours and island trips are often cancelled. See the island hopping guide and the Similan guide.
- Floods and landslides can close roads. See the heavy rain guide and the traffic guide.
- Humidity brings mould and pests. See the mould guide and the pest guide.
- Heat needs care. See the heat guide.
- Surf season runs in the monsoon. See the surfing guide.
Planning a move or stay
Rents and hotel prices often fall in the wet season and rise in high season. See the best time to visit page and the long-term rentals page.
This is general information, not medical, legal or insurance advice. Rules and conditions change, so check current official guidance for your situation.
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