The highest day temperature in January 2025 was 74°F. The lowest night temperature was 30°F. The average values for day and night temperatures during January were 56.4°F и 45.7°F respectivly.

The average sea surface temperature in January 2025 for Jacksonville was 56.8°F. The maximum and minimum values were 51.0°F and 61.0°F respectively.

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

Precipitation total in January for Jacksonville is 1.5 in. It makes january the least rainy month of the year.

The average wind speed in January is 7.4 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 Jacksonville in January is 6.4 hours.