Currently: 85 °F. Light rain. Passing clouds. (Weather station: Ko Samui, Thailand). See more current weatherAnnual Weather Averages Near Ko Samui Island
Averages are for Ko Samui, which is 5 miles from Ko Samui Island.
Based on weather reports collected during 2012–2021.
All Year Climate & Weather Averages in Ko Samui Island
High Temp: 92 °F
Low Temp: 75 °F
Mean Temp: 83 °F
Precipitation: 6.35"
Humidity: 81%
Dew Point: 76 °F
Wind: 7 mph
Pressure: 29.82 "Hg
Visibility: 6 mi
January Climate & Weather Averages in Ko Samui Island
High Temp: 84 °F
Low Temp: 76 °F
Mean Temp: 80 °F
Precipitation: 7.26"
Humidity: 83%
Dew Point: 75 °F
Wind: 10 mph
Pressure: 29.88 "Hg
Visibility: 5 mi
February Climate & Weather Averages in Ko Samui Island
High Temp: 85 °F
Low Temp: 77 °F
Mean Temp: 81 °F
Precipitation: 2.04"
Humidity: 81%
Dew Point: 75 °F
Wind: 12 mph
Pressure: 29.88 "Hg
Visibility: 5 mi
March Climate & Weather Averages in Ko Samui Island
High Temp: 87 °F
Low Temp: 78 °F
Mean Temp: 82 °F
Precipitation: 1.27"
Humidity: 81%
Dew Point: 77 °F
Wind: 9 mph
Pressure: 29.85 "Hg
Visibility: 5 mi
April Climate & Weather Averages in Ko Samui Island
High Temp: 89 °F
Low Temp: 79 °F
Mean Temp: 84 °F
Precipitation: 3.91"
Humidity: 81%
Dew Point: 78 °F
Wind: 6 mph
Pressure: 29.81 "Hg
Visibility: 6 mi
May Climate & Weather Averages in Ko Samui Island
High Temp: 92 °F
Low Temp: 78 °F
Mean Temp: 85 °F
Precipitation: 4.82"
Humidity: 80%
Dew Point: 78 °F
Wind: 4 mph
Pressure: 29.78 "Hg
Visibility: 6 mi
June Climate & Weather Averages in Ko Samui Island
High Temp: 92 °F
Low Temp: 77 °F
Mean Temp: 84 °F
Precipitation: 5.03"
Humidity: 78%
Dew Point: 77 °F
Wind: 4 mph
Pressure: 29.77 "Hg
Visibility: 6 mi
July Climate & Weather Averages in Ko Samui Island
High Temp: 91 °F
Low Temp: 77 °F
Mean Temp: 84 °F
Precipitation: 5.29"
Humidity: 79%
Dew Point: 76 °F
Wind: 5 mph
Pressure: 29.78 "Hg
Visibility: 6 mi
August Climate & Weather Averages in Ko Samui Island
High Temp: 91 °F
Low Temp: 77 °F
Mean Temp: 84 °F
Precipitation: 3.85"
Humidity: 78%
Dew Point: 76 °F
Wind: 5 mph
Pressure: 29.78 "Hg
Visibility: 6 mi
September Climate & Weather Averages in Ko Samui Island
High Temp: 90 °F
Low Temp: 77 °F
Mean Temp: 83 °F
Precipitation: 4.83"
Humidity: 80%
Dew Point: 76 °F
Wind: 5 mph
Pressure: 29.80 "Hg
Visibility: 6 mi
October Climate & Weather Averages in Ko Samui Island
High Temp: 88 °F
Low Temp: 76 °F
Mean Temp: 82 °F
Precipitation: 8.15"
Humidity: 84%
Dew Point: 77 °F
Wind: 5 mph
Pressure: 29.82 "Hg
Visibility: 6 mi
November Climate & Weather Averages in Ko Samui Island
High Temp: 86 °F
Low Temp: 76 °F
Mean Temp: 81 °F
Precipitation: 16.71"
Humidity: 86%
Dew Point: 77 °F
Wind: 7 mph
Pressure: 29.83 "Hg
Visibility: 6 mi
December Climate & Weather Averages in Ko Samui Island
High Temp: 85 °F
Low Temp: 75 °F
Mean Temp: 80 °F
Precipitation: 13.09"
Humidity: 84%
Dew Point: 75 °F
Wind: 9 mph
Pressure: 29.86 "Hg
Visibility: 5 mi