ClimaGo › Koh Samui › Weather in March
Thailand
March heats up significantly with temperatures climbing to 31°C and occasional afternoon showers beginning, so plan morning activities and afternoon relaxation while staying hydrated throughout the increasingly humid days.
Avg High
31°C
Avg Low
25°C
Daily Rain
2mm
Rainfall
Low
✅ March is one of the best months to visit Koh Samui!
This tropical island paradise features white-sand beaches, coconut palms, luxury resorts, nightlife and perfect-postcard island tranquility.