The highest day temperature in January 2025 was 64°F. The lowest night temperature was 30°F. The average values for day and night temperatures during January were 51.6°F и 44.6°F respectivly.

The average sea surface temperature in January 2025 for St. Simons Island was 53.3°F. The maximum and minimum values were 48.8°F and 59.0°F respectively.

Most of the days in January are sunny but you can also expect cloudy and gloomy days.

Precipitation total in January for St. Simons Island is 0.5 in. It makes january one of the least rainy months of the year.

The average wind speed in January is 6.7 mph. This value is relatively stable throughout the year.

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 St. Simons Island in January is 6.3 hours.