The best time to visit Phuket is during the dry season, November to April, when rainfall is lowest and the sea is calmest. Outside that window, Phuket still runs warm and green, just with shorter, heavier bursts of rain to plan around. Phuket runs on two seasons, and the difference between them is bigger than most visitors expect. Get the season right and the Andaman Sea rewards you with some of the calmest, clearest water in Southeast Asia.
Get it wrong and you'll still have a good trip, just a wetter one, with the island's beaches and jungle interior turning a deeper green for the trouble.
Most visitors default to the obvious peak months without realising how much the shoulder weeks either side can offer instead.
Key takeaways
● Dry season, November to April, brings the calmest seas, clearest skies and the best diving visibility of the year.
● Green season, May to October, trades some beach days for a quieter island and lush scenery, with rain arriving in short afternoon bursts.
● Club Med Phuket sits on Kata Beach on the island's west coast, the side most affected by the southwest monsoon, so the seasons described here are the resort's own.
● Diving and island-hopping trips are best organised in the dry season, when the water is calmest and the Similan Islands National Park is open.