Bariloche experiences a varied and unpredictable climate due to its high elevation in the mountains. Temperatures drop severely during the night, which accounts for a large discrepancy between high and low daily temperatures. These factors are more pronounced at the ski resorts higher up in the mountains, where temperatures become cooler and the wind becomes stronger the higher on ascends.

    Patagonian summers are short and dry. January and February are the warmest months, with high temperatures averaging in the lower-70s. This drops to lows of 43 during the nights, so it is important to bring warm clothing even during the summer. Snow can appear on mountain peaks during the summer. Winters are long and cold, conducive to the skiing culture that makes its base in Bariloche. The coldest months of the year are June, July and August, when highs average in the lower 40s. Lows during this time are in the upper 20s. Cold temperatures, however, persist from May through September.

    Precipitation is pretty constant in the Winter. May through August is especially wet, with around 5 inches of precipitation each month. This creates a large amount of snowfall, especially in the mountains where temperatures are cooler.