Koh SamuiKoh Samui
Thailand- Best months: January, February, March, July
Thailand covers 4 destinations in our climate comparison. Purely on climate, the most rewarding months across the region are January, February and March, when days average around 29 °C. All values are historical monthly averages, not a forecast.
Koh Samui
Phuket
Krabi
BangkokThe highest overall climate score in Thailand goes to Koh Samui (73/100). 3 of the 4 destinations are coastal, so beach and swimming weather is a key factor in the ranking below.
Pick a destination for its full month-by-month guide, or use the best months above as a starting point. If your dates are fixed, compare the individual destinations for that month; if you are flexible, January, February and March offer the most reliable conditions across Thailand.
Climatically the best months across Thailand are January, February and March. The ideal month still depends on the specific destination and your travel style.
By overall climate score, Koh Samui leads with 73/100 — see the full ranking below.