The highest day temperature in December 2025 was 78°F. The lowest night temperature was 30°F. The average values for day and night temperatures during December were 60.4°F и 39.5°F respectivly.

The average sea surface temperature in December 2025 for San Carlos de Bariloche was 56.2°F. The maximum and minimum values were 54.4°F and 59.2°F respectively.

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

Precipitation total in December for San Carlos de Bariloche is 0.6 in. It makes december one of the least rainy months of the year.

The average wind speed in December is 10.2 mph. It makes December the most windy month of the year for San Carlos de Bariloche.

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 Carlos de Bariloche in December is 12.0 hours.