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 june. The average daily temp is 85.6°F. The average nightly temp is 81.7°F.
Sea water temperature, °F
The warmest sea temperature usually observed in September. Average daily sea water temperature during this month is 85.4°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: 20:12
August 30, sunday
2100
79°F
SE
16 mph
16 mph
August 31, monday
0000
79°F
E
14 mph
14 mph
0300
79°F
E
12 mph
12 mph
0600
79°F
E
12 mph
12 mph
0900
79°F
E
11 mph
11 mph
1200
79°F
E
11 mph
11 mph
1500
81°F
E
14 mph
14 mph
1800
79°F
E
14 mph
14 mph
