Arosa Weather & Climate: Best Time to Visit

The climate in Arosa is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a moderate 18°C (64°F) in July to a very cold -3°C (27°F) in January.

Nighttime temperatures range from 6°C (43°F) in July to -12°C (10°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Arosa has a notably wet climate with abundant precipitation, recording 1539 mm (61 in) of rain/snowfall per year. The amount of precipitation varies moderately throughout the year. The wettest month, June, sees around 182 mm (7.2 in) of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, February, still receives a respectable 87 mm (3.4 in) of snowfall. For more details, please visit our Arosa Precipitation page.

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

The average number of days each month with precipitation

In Arosa, summer days are longer and more sunny, with daily sunshine hours peaking at 6.3 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 3.2 hours per average 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 Arosa.

The city experiences its highest humidity in January, reaching 76%. In April, the humidity drops to its lowest level at 71%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year

The mean wind speed varies between 1 m/s (2 knots) and 3 m/s (6 knots) throughout the year. It is lowest in January, February and December and highest during July. What does this mean?

The mean monthly wind speed over the year (meters per second)