Measurements:
°C
°F
Guam
84°F
W 17 mph
Feels like: 92°F
Precip: 0%
World Resorts Northern Mariana Islands Guam Weather December Weather in Guam

Guam Weather: December

Average Day Temperature: 89.4°F
Average Night Temperature: 85.6°F
Sea Water Temperature: 87.5°F
Number of Sunny Days: 2 days
Sunshine Hours: 11.3 - 11.4 hours
Number of Rainy Days: 5 days
Precipitation Totals: 3.2 in

Air Temperature in December, °F

Select Year: 2023 2022 2021

The highest day temperature in December 2023 was 88°F. The lowest night temperature was 83°F. The average values for day and night temperatures during December were 86.3°F и 84.1°F respectivly.

Guam Water Sea Temperature in December, °F

Select Year: 2024 2023 2022

The average sea surface temperature in December 2023 for Guam was 87.9°F. The maximum and minimum values were 87.4°F and 88.4°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in December are cloudy but you can also expect sunny or gloomy days.

Precipitation Totals in December, in

Precipitation total in December for Guam is 3.2 in.

Wind Speed in December, mph

The average wind speed in December is 17.4 mph. It makes December the most windy month of the year for Guam.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Guam in December is 5.3 hours.

Best Time to Visit Guam
The most sunny months:
July 6 days
August 5 days
September 5 days
The most warm months:
June 91.9 °F
July 91.8 °F
August 91.3 °F
Warmest sea temperature:
August 89.4 °F
September 89.4 °F
July 89.3 °F
The most cold months:
February 87.0 °F
January 87.7 °F
March 88.1 °F
The most rainy months:
October 16 days
July 14 days
August 14 days
The most windy months:
December 17 mph
February 17 mph
January 17 mph

Guam on the Weather Map

Northern Mariana Islands Resorts:
NAME
Guam +84
Rota +86
Saipan +86
Susupe +86
Tinian +86
24 Hours Weather Forecast
Guam
Local time: 23:14
26 dec, thursday
0000 84°F
W
17 mph
0300 84°F
W
17 mph
0600 84°F
SW
16 mph
0900 86°F
SW
19 mph
1200 86°F
SW
21 mph
1500 86°F
SW
21 mph
1800 84°F
W
19 mph
2100 84°F
W
19 mph