Weather in St. George Island: December
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Average day temperature: | 62.5°F |
| Average night temperature: | 56.0°F | |
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Sea water temperature: | 63.2°F |
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Number of sunny days: | 13 days |
| Day length: | 10.2 - 10.4 hours | |
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Number of rainy days: | 2 days |
| Precipitation totals: | 1.4 in. | |
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forecast
| St. George Island |
temperature
| St. George Island |
Air temperature in December, °F
The highest day temperature during December of 2025 was 72°F. At the same time the lowest night temperature was 32°F. Daily and nightly averages during December were 61.8°F and 51.6°F.
Sea water temperature in St. George Island in December, °F
The average sea water temperature in December of 2025 was 63.5°F. The highest and lowest sea temperatures during the month were 68.0°F and 59.2°F.
Mostly all days in December are sunny but cloudy days are also possible.
Precipitation total in December, in.
Precipitation total value in St. George Island in December is 1.4 in. Other months of the year show relatively similar values.
The average wind speed value in December is 8.6 mph
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: 6.4.
Best time for vacation in St. George Island
St. George Island on a weather map
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