The highest day temperature in December 2023 was 94°F. The lowest night temperature was 75°F. The average values for day and night temperatures during December were 91.7°F и 80.4°F respectivly.

The average sea surface temperature in December 2023 for San Diego was 86.4°F. The maximum and minimum values were 85.0°F and 87.8°F respectively.

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

Precipitation total in December for San Diego is 0.1 in. It makes december one of the least rainy months of the year.

The average wind speed in December is 11.0 mph. It makes December one of the most windy months of the year for San Diego.

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 San Diego in December is 9.1 hours.