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Guam weather in December

Weather in Guam: December

Average day temperature: 85.4°F
Average night temperature: 82.1°F
Sea water temperature: 83.7°F
Number of sunny days: 2 days
Day length: 11.3 - 11.4 hours
Number of rainy days: 5 days
Precipitation totals: 3.2 in.

Air temperature in December, °F

Show year:
2023
2022
2021

The highest day temperature during December of 2023 was 84°F. At the same time the lowest night temperature was 79°F. Day and night temperature averages during December were 82.7°F and 80.7°F.

Sea water temperature in Guam in December, °F

Show year:
2023
2022
2021

The average sea water temperature in December of 2023 was 84.1°F. The highest and lowest sea temperatures during the month were 84.6°F and 83.7°F.

Sunny, partly cloudy and cloudy days

Mostly all days in December are cloudy but sunny and partly cloudy days are also possible.

Precipitation total in December, in.

Precipitation total value in Guam in December is 3.8 in. Other months of the year show relatively similar values.

Wind speed in December, mph

The average wind speed value in December is 16.6 mph It makes December one of the most windy months of the year.

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 4.7.

Best time for vacation in Guam

Sunniest months:
July 6 days
August 5 days
September 5 days
Warmest months:
June 87.7 °F
July 87.6 °F
August 87.2 °F
Warmest sea temp:
August 85.5 °F
September 85.5 °F
July 85.4 °F
Coldest months:
February 83.3 °F
January 84.0 °F
March 84.3 °F
Rainiest months:
October 16 days
July 14 days
August 14 days
Windiest months:
December 17.4 mph
February 17.4 mph
January 16.9 mph

Guam on a weather map

Guam
+82°F
W 14 mph
Feels like: +90°F
Precip.: 100%
Places in Northern Mariana Islands:
Name
°F
+82°F
+84°F
+82°F
+82°F
+82°F
24 Hours Forecast
Guam
Local time: 20:30
November 21, thursday
2100
82°F
W
14 mph
November 22, friday
0000
82°F
W
15 mph
0300
82°F
SW
13 mph
0600
81°F
W
13 mph
0900
82°F
W
16 mph
1200
84°F
W
16 mph
1500
84°F
W
16 mph
1800
82°F
W
16 mph
Units of measurement: °C / °F