Average monthly rainy days in Koh Samui
The number of days each month with rain, snow and hail in Koh Samui (Bangkok Province), Thailand.
- Most rainy days are in May, June, July, August, September, October and November.
- On average, October is the most rainy with 20 days of rain/snow.
- On average, March is the driest month with 4 rainy days.
- The average annual number of rainy days is 163.
Weather Forecasts for Koh Samui
Fri Apr 26
36°C | 28°C
SE 
14 km/h
14 km/h
almost clear and no rain
Sat Apr 27
35°C | 28°C
SE 11 km/h
11 km/h0.5 mm
broken clouds and small chance of slight rain
Sun Apr 28
36°C | 28°C
E 11 km/h
11 km/h0.9 mm
partly cloudy and rain
