The highest day temperature in December 2025 was 92°F. The lowest night temperature was 59°F. The average values for day and night temperatures during December were 78.5°F и 68.2°F respectivly.

The average sea surface temperature in December 2025 for Cabo Polonio was 73.7°F. The maximum and minimum values were 68.8°F and 78.2°F respectively.

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

Precipitation total in December for Cabo Polonio is 1.1 in. It makes december one of the least rainy months of the year.

The average wind speed in December is 10.8 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 Cabo Polonio in December is 9.3 hours.