Please click on any column to get detailed information about Guam weather in that particular month. You will get daily weather information for that month for the last several years.
Day & Night air temperature, °F
The warmest month in Guam is july. The average daily temp is 87.5°F. The average nightly temp is 82.5°F.
Sea water temperature, °F
The warmest sea temperature usually observed in August. Average daily sea water temperature during this month is 85.5°F.
Precipitation total, in.
Number of rainy days
This chart shows averages for the last three years. It shows medium and heavy rains only, it doesn't show light rains.
Wind speed, mph
Sunny, partly cloudy and cloudy days
Average sunny hours
Sunny hours are calculated based on the average daily number of hours while sunlight can reach the ground. It depends on day length and cloudiness during the day.
* Charts above show average data for the last 3 years.
Best time for vacation in Guam
Guam on a weather map
Places in Northern Mariana Islands:
Name
°F
24 Hours Forecast
Guam
Local time: 11:43
April 20, saturday
1200
84°F
W
15 mph
15 mph
1500
84°F
W
15 mph
15 mph
1800
82°F
W
14 mph
14 mph
2100
81°F
W
13 mph
13 mph
April 21, sunday
0000
81°F
W
12 mph
12 mph
0300
79°F
W
14 mph
14 mph
0600
81°F
W
14 mph
14 mph
0900
82°F
W
17 mph
17 mph
