This page presents a long range weather forecast for Koh Samui in May as well as other months. You can quickly get a brief overview of the weather to expect in May on a daily basis.
The Koh Samui extended forecast data provided is based on the average values of previous years.
Long range weather forecast
Select a month and click on a day for more information:
Wednesday
May 1
34° / 27°
Thursday
May 2
33° / 28°
Friday
May 3
33° / 28°
Saturday
May 4
35° / 29°
Sunday
May 5
31° / 30°
Monday
May 6
31° / 30°
Tuesday
May 7
30° / 28°
Wednesday
May 8
30° / 29°
Thursday
May 9
30° / 30°
Friday
May 10
31° / 30°
Saturday
May 11
30° / 30°
Sunday
May 12
30° / 29°
Monday
May 13
31° / 30°
Tuesday
May 14
31° / 29°
Wednesday
May 15
31° / 29°
Thursday
May 16
31° / 30°
Friday
May 17
31° / 29°
Saturday
May 18
30° / 30°
Sunday
May 19
35° / 28°
Monday
May 20
35° / 28°
Tuesday
May 21
34° / 29°
Wednesday
May 22
34° / 28°
Thursday
May 23
34° / 28°
Friday
May 24
34° / 28°
Saturday
May 25
34° / 28°
Sunday
May 26
34° / 27°
Monday
May 27
34° / 28°
Tuesday
May 28
33° / 28°
Wednesday
May 29
32° / 27°
Thursday
May 30
32° / 27°
Friday
May 31
33° / 27°
Koh Samui 30 days weather forecast
Check out our estimated 30 days weather forecast for Koh Samui, this data is based on the average weather in Koh Samui in the last few years.
For a more accurate and detailed forecast, check out the 14 day weather for Koh Samui next to the desired date.