Phuket has a pleasant tropical climate all year round. There are two main divisions of seasons – Dry (November to April) and Monsoon (May to October).
Dry Season: Tourists mostly prefer travelling to Phuket in dry season, as it is warm, the skies are clear, and they can enjoy the weather. Beach lovers should obviously try to visit during this season too, making it a favorable time to visit Phuket..
Wet Season: Phuket looks simply delicious in the rain so one cannot write off the monsoon as a good season to visit. Yes, it might rain but as long as you have some rain gear with you, you are good to go!
The best time to visit Phuket is actually the monsoon season, in the months of December through March, when it isn't so humid, and the cool breezes keep things comfortable. The average temperature ranges from 24 degree Celsius to 32 degree Celsius.
The hottest time is from April through May with temperatures ranging from 27 degree Celsius to 36 degree Celsius. There are frequent showers which give temporary breaks from heat and humidity. During September and Early October, the perks of visiting are completely different. The beaches are not very crowded and you will find a quieter Phuket. If you are not a person who is a fan of crowds, then this is the best time for you to visit.