The highest day temperature in December 2025 was 61°F. The lowest night temperature was 33°F. The average values for day and night temperatures during December were 51.7°F и 40.4°F respectivly.

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

Precipitation total in December for El Chalten is 5.3 in. It makes december one of the least rainy months of the year.

The average wind speed in December is 11.8 mph. It makes December one of the most windy months of the year for El Chalten.

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 El Chalten in December is 7.4 hours.