Weather in St. Simons Island: January
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Average day temperature: | 59.4°F |
| Average night temperature: | 50.2°F | |
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Sea water temperature: | 55.8°F |
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Number of sunny days: | 15 days |
| Day length: | 10.2 - 10.7 hours | |
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Number of rainy days: | 1 day |
| Precipitation totals: | 0.4 in. | |
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forecast
| St. Simons Island |
temperature
| St. Simons Island |
Air temperature in January, °F
The highest day temperature during January of 2026 was 69°F. At the same time the lowest night temperature was 31°F. Daily and nightly averages during January were 56.9°F and 47.3°F.
Sea water temperature in St. Simons Island in January, °F
The average sea water temperature in January of 2026 was 54.4°F. The highest and lowest sea temperatures during the month were 58.8°F and 50.2°F.
Mostly all days in January are sunny but cloudy days are also possible.
Precipitation total in January, in.
Precipitation total value in St. Simons Island in January is 0.4 in. Other months of the year show relatively similar values.
The average wind speed value in January is 6.9 mph It makes January most windy month of the year.
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 January is: 6.5.
Best time for vacation in St. Simons Island
St. Simons Island on a weather map
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