The highest day temperature in December 2025 was 74°F. The lowest night temperature was 29°F. The average values for day and night temperatures during December were 61.2°F и 51.9°F respectivly.

The average sea surface temperature in December 2025 for Fort Walton Beach was 67.8°F. The maximum and minimum values were 63.4°F and 71.2°F respectively.

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

Precipitation total in December for Fort Walton Beach is 1.3 in.

The average wind speed in December is 9.0 mph.

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 Fort Walton Beach in December is 6.3 hours.