Travel Guides & Information
Koh Samui is the largest island in the Gulf of Thailand, followed by its two smaller "sisters": Koh Phangan and Koh Tao. Diving, snorkeling, swimming, and basking on the picturesque jungle-backed beaches are popular things to do here, as well as boat tours around the sublime seascape of Ang Thong National Marine Park.
Thailand is a land of luxury tropical escapes, a place where sea and land are both stunning and part of every beach lover's bucket list. There's much to see and do in Thailand at any time of the year, as places like Bangkok are always vibrant no matter the weather.
Generally, the best time to visit Thailand weather-wise is from December to February, during the cool season. There's little rain, the humidity goes down and temperatures are in the upper 20s, rather than the usual mid-30s.
Ang Thong National Marine Park
Best Time to Visit Koh Samui
Koh Samui has a different climate to the other coastal and island destinations in Thailand. Here, October and November are the rainiest months and the ones to avoid if you're looking to maximize beach time during your trip. Keep in mind that these are the only two months that are considered low season on the island, so if your goal is to save money and find good hotel deals, you would have to travel during this period.
Otherwise, February to June is shoulder season in Koh Samui, when it's still possible to find some good prices and deals on package trips and accommodations. February and March are two great months to visit, as you'll see very little rain and lots of sun.
High season–and the absolutely best time to visit Koh Samui–is December and January. There's very little rain, temperatures stay around 28 degrees Celsius (instead of the mid- to high-30s in other months), and there's generally just great beach weather. Be ready to book accommodations well in advance if you're flying over in December or January, as hotels are packed during this time.
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