Weather in December
In December, Guam National Wildlife Refuge experiences the coolest sea temperatures of the year, dropping to 83.2°F (28.4°C). These cooler waters affect marine life, instigating changes in behavior and migration patterns. Daylight reduces further, offering fewer hours for outdoor leisure and activities. Despite these changes, the beauty of the Refuge remains undiminished with fauna and flora adapting to these evolving conditions. With fewer tourists visiting during this time, the island has a more tranquil and peaceful atmosphere.
Note: Swimming, diving, and other water activities in temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are highly enjoyable and provide prolonged comfort without unease.
On the first day of the month, sunrise is at 6:28 am and sunset at 5:51 pm. On the last day of December, in Guam National Wildlife Refuge, sunrise is at 6:43 am and sunset at 6:03 pm ChST.
Ocean temperature
In Guam National Wildlife Refuge, in December, the average water temperature is 83.1°F (28.4°C).Note: Swimming, diving, and other water activities in temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are highly enjoyable and provide prolonged comfort without unease.
Daylight
December has the shortest days of the year, with an average of 11h and 18min of daylight.On the first day of the month, sunrise is at 6:28 am and sunset at 5:51 pm. On the last day of December, in Guam National Wildlife Refuge, sunrise is at 6:43 am and sunset at 6:03 pm ChST.
Updated: Jun 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the ocean temperature in December?
In December, the average ocean temperature is 83.1°F (28.4°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.
What is the month with the shortest days?
With an average of 11h and 18min of daylight, December has the shortest days of the year.
How many hours of daylight does Guam National Wildlife Refuge have in December?
In Guam National Wildlife Refuge, the average day length in December is 11h and 20min.
When is the sunrise / sunset in December?
On the first day of December, sunrise is at 6:28 am and sunset at 5:51 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:03 pm ChST.
Average sea temperature in December
Guam National Wildlife Refuge, GU
- Average sea temperature in December: 83.2°F
The best month for swimming (with the highest average sea temperature) is August (85.4°F).
The coldest month (with the lowest average sea temperature) is February (82°F).
Average daylight in December
Guam National Wildlife Refuge, GU
- Average daylight in December: 11h and 2min
The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 18min).
Guam National Wildlife Refuge, Guam, USA
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