IMPORTANT NOTE ABOUT PHUKET WEATHER:
Online weather forecasts are always on the pessimistic side! A whole week with the thunderstorm icon doesn't mean it will rain all day!
Phuket has a tropical monsoonal climate. It's warm all year round, but it is hottest from April to May and from September to October. The September-October period is also the wettest, thanks to the southwest monsoon.
Thanks to its position in the Andaman Sea, Phuket weather is mostly mild. The island avoids the majority of the typhoons and tropical storms which occasionally batter Hong Kong and the Philippines. Heavy rains in September and October can cause minor disruptions. However, it's rare to see several days of bad weather.
Today's Phuket Weather and 7-Day Forecast
Average Monthly Rainfall in Phuket
These numbers are averages. There are yearly variations in Phuket weather.
Best Time to Go to Phuket
The best time to visit Phuket is from December through March. This is the northeast monsoon season. Mainland Thailand blocks the monsoon rains, leaving only cool breezes and blue skies over Phuket. The average temperature is around 24°C to 32°C (75°F to 89°F) and the humidity is at its lowest.
Hottest Time in Phuket
The hottest Phuket weather is from April through May, with temperatures ranging from 27°C to 36°C (80°F to 95°F). Humidity is high, at this time, which can make the days feel even hotter. Occasional short, thundery showers bring a little relief from the heat. There's also the Thai New Year festival of Songkran in mid-April, when you're likely to get splashed with cold water.
Locals enjoy visiting in June, July and August. The weather in Phuket is generally fine and the island's favourite attractions remain uncrowded. The usual pattern is for brief but heavy showers, with plenty of sunshine between downpours. Temperatures range between 70°F and 90°F (20°C to 33°C).
Low Season in Phuket
The weather in Phuket is at its worst in September and early-October. These months see the heaviest rainfall and the roughest seas. This makes it the best time for surfers to visit. You'll find the beaches, attractions, restaurants and roads relatively quiet. Even at this time, there are usually long sunny spells between the showers.