Currently: 82 °F. Passing clouds. (Weather station: Agana Guam International Airport, Guam). See more current weatherAnnual Weather Averages Near Guam Island
Averages are for Agana Guam International Airport, which is 5 miles from Guam Island.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Guam Island
High Temp: 89 °F
Low Temp: 75 °F
Mean Temp: 82 °F
Precipitation: 8.08"
Humidity: 78%
Dew Point: 74 °F
Wind: 18 mph
Pressure: 29.84 "Hg
Visibility: 9 mi
January Climate & Weather Averages in Guam Island
High Temp: 86 °F
Low Temp: 76 °F
Mean Temp: 81 °F
Precipitation: 5.16"
Humidity: 77%
Dew Point: 72 °F
Wind: 22 mph
Pressure: 29.87 "Hg
Visibility: 9 mi
February Climate & Weather Averages in Guam Island
High Temp: 86 °F
Low Temp: 75 °F
Mean Temp: 81 °F
Precipitation: 3.93"
Humidity: 76%
Dew Point: 72 °F
Wind: 22 mph
Pressure: 29.88 "Hg
Visibility: 9 mi
March Climate & Weather Averages in Guam Island
High Temp: 87 °F
Low Temp: 76 °F
Mean Temp: 81 °F
Precipitation: 2.75"
Humidity: 74%
Dew Point: 72 °F
Wind: 22 mph
Pressure: 29.88 "Hg
Visibility: 9 mi
April Climate & Weather Averages in Guam Island
High Temp: 88 °F
Low Temp: 77 °F
Mean Temp: 83 °F
Precipitation: 3.34"
Humidity: 75%
Dew Point: 73 °F
Wind: 21 mph
Pressure: 29.87 "Hg
Visibility: 9 mi
May Climate & Weather Averages in Guam Island
High Temp: 89 °F
Low Temp: 78 °F
Mean Temp: 83 °F
Precipitation: 4.37"
Humidity: 76%
Dew Point: 75 °F
Wind: 18 mph
Pressure: 29.86 "Hg
Visibility: 9 mi
June Climate & Weather Averages in Guam Island
High Temp: 89 °F
Low Temp: 78 °F
Mean Temp: 83 °F
Precipitation: 6.74"
Humidity: 77%
Dew Point: 75 °F
Wind: 17 mph
Pressure: 29.85 "Hg
Visibility: 9 mi
July Climate & Weather Averages in Guam Island
High Temp: 88 °F
Low Temp: 77 °F
Mean Temp: 83 °F
Precipitation: 11.64"
Humidity: 81%
Dew Point: 76 °F
Wind: 13 mph
Pressure: 29.82 "Hg
Visibility: 9 mi
August Climate & Weather Averages in Guam Island
High Temp: 87 °F
Low Temp: 76 °F
Mean Temp: 82 °F
Precipitation: 17.23"
Humidity: 83%
Dew Point: 76 °F
Wind: 12 mph
Pressure: 29.81 "Hg
Visibility: 9 mi
September Climate & Weather Averages in Guam Island
High Temp: 87 °F
Low Temp: 76 °F
Mean Temp: 82 °F
Precipitation: 14.94"
Humidity: 83%
Dew Point: 76 °F
Wind: 11 mph
Pressure: 29.81 "Hg
Visibility: 9 mi
October Climate & Weather Averages in Guam Island
High Temp: 87 °F
Low Temp: 77 °F
Mean Temp: 82 °F
Precipitation: 12.86"
Humidity: 82%
Dew Point: 76 °F
Wind: 13 mph
Pressure: 29.81 "Hg
Visibility: 9 mi
November Climate & Weather Averages in Guam Island
High Temp: 88 °F
Low Temp: 77 °F
Mean Temp: 83 °F
Precipitation: 8.01"
Humidity: 80%
Dew Point: 75 °F
Wind: 19 mph
Pressure: 29.82 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Guam Island
High Temp: 87 °F
Low Temp: 77 °F
Mean Temp: 82 °F
Precipitation: 5.97"
Humidity: 78%
Dew Point: 74 °F
Wind: 22 mph
Pressure: 29.85 "Hg
Visibility: 9 mi