Currently: 89 °F. Scattered clouds. (Weather station: Agana Guam International Airport, Guam). See more current weatherAnnual Weather Averages Near Achang Reef Flat Marine Preserve
Averages are for Agana Guam International Airport, which is 18 miles from Achang Reef Flat Marine Preserve.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Achang Reef Flat Marine Preserve
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 Achang Reef Flat Marine Preserve
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 Achang Reef Flat Marine Preserve
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 Achang Reef Flat Marine Preserve
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 Achang Reef Flat Marine Preserve
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 Achang Reef Flat Marine Preserve
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 Achang Reef Flat Marine Preserve
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 Achang Reef Flat Marine Preserve
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 Achang Reef Flat Marine Preserve
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 Achang Reef Flat Marine Preserve
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 Achang Reef Flat Marine Preserve
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 Achang Reef Flat Marine Preserve
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 Achang Reef Flat Marine Preserve
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