The highest day temperature in December 2023 was 82°F. The lowest night temperature was 52°F. The average values for day and night temperatures during December were 70.6°F и 64.9°F respectivly.

The average sea surface temperature in December 2023 for Siesta Key was 68.8°F. The maximum and minimum values were 63.8°F and 74.0°F respectively.

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

Precipitation total in December for Siesta Key is 0.7 in.

The average wind speed in December is 9.6 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 Siesta Key in December is 6.8 hours.