Weather in Ko Samui in June

Typically the average temperate in Ko Samui throughout the duration of June is 27. You can expect a high of 32 with low daily temperautes being 26 celsius. We have put some more information here:
 

Month Degrees Celsius
Temperature 27
High Temperature 32
Low Temperature 26
Sunshine Per Day 7

Useful Links: Ko Samui Weather: Average Weather & Yearly Climate