Best time to visit Koh Samui

Koh Samui has a humid tropical monsoon climate with distinctive rainy and dry seasons. The monsoon seasons here are different than in other parts of Thailand. Dry season on Ko Samui lasts from December to August with the hottest weather from March to August, and the rainy season is from September to November. However, the rainy periods are rather short and Koh Samui can be easily enjoyed also during this season. The northeast monsoon between October and January is characterized by occasional strong winds.