Arolla Weather & Climate: Best Time to Visit

Visitors to Arolla can expect significant temperature changes throughout the year. Average daytime temperatures reach a moderate 16°C (61°F) in July. In January, the coolest month of the year, temperatures drop to a very cold -7°C (19°F).

At night, temperatures range from around 5°C (41°F) in July to -15°C (5°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Arolla is known for its substantial rain/snowfall, with annual precipitation reaching 1345 mm (53 in). Despite minor fluctuations, Arolla enjoys fairly consistent precipitation throughout the year. In May, you can expect around 134 mm (5.3 in) of precipitation, while in February, Arolla receives about 94 mm (3.7 in). For more details, please visit our Arolla Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Arolla can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 6.7 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 2.8 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Arolla.

The city experiences its highest humidity in August, reaching 70%. In January, the humidity drops to its lowest level at 65%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year