December to February
The cool season : temperatures can reach up to 30°C (86°F). Brief tropical rain showers occur mostly in December. This is the best season to visit Phangan.
March to June
The hot season : it becomes very hot – up to 40°C (114°F), with little or no rain. You will appreciate your air-conditioned hotel room during this time!
July to September
The pre-monsoon : it’s hot with occasional rains. More or less nice weather, depending on the years, september seems to be better
October and November
The rain season : it’s the monsoon, and you’ll see more rain than any other months, though it generally doesn’t rain every day, neither all day, nice hot days can even happen. It’s a good idea to take a raincoat, when going outside….