Average water temperature in Koh Samui (Bangkok Province) in celsius
The mean water temperature over the year in Koh Samui, Thailand.
Show the average water temperatures in Koh Samui in Fahrenheit »
- On average, April has the warmest water temperature with 30° Celsius (85° Fahrenheit).
- On average, January has the coldest water temperature with 27° Celsius (81° Fahrenheit).