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our weather data for Koh Phangan is quite accurate and updated every 3 hours.
During the high season, from December to February, temperatures on Koh Phangan can reach up to 30°C (86F).
Brief tropical rainshowers occur mostly in December.
This is the best season for European people as the weather is comparatively cooler than the rest of the year.
From March to June it can become very hot -- up to 40°C (114F), with little or no rain.
The months of July to September are hot with occasional rain. These are also popular months for visitors.
October and November see more rain than other months, though it generally doesn't rain every day.
In contrast to other regions of Thailand, Phangan does not really have a well-defined rainy season but sometimes there are sunless periods for two or three days, especially during the monsoon month of November.
average monthly rainfall in millimeter