Average water temperature in Koh Samui
The mean water temperature over the year in Koh Samui (Bangkok Province), Thailand.
Show the average water temperatures in Koh Samui in Celsius »
- On average, April has the warmest water temperature with 30°C.
- On average, January has the coldest water temperature with 27°C.
Weather Forecasts for Koh Samui
partly cloudy and no rain
partly cloudy and rain
broken clouds and rain