Home › Cities › Switzerland › Arosa
Arosa, Switzerland climate
Dfc Subarctic
Arosa has a seasonal cold-temperate climate (Subarctic, Köppen Dfc). The hottest month is August with an average daily high near 60°F, while the coldest is February averaging around 19°F at night. Around 46 inches of precipitation falls each year, peaking in August (6.2 inches) and easing off in February (2.5 inches).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Arosa climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 31 | 31 | 36 | 41 | 49 | 57 | 60 | 60 | 53 | 47 | 38 | 32 |
| Avg temp (°F) | 26 | 25 | 29 | 35 | 43 | 50 | 53 | 53 | 47 | 42 | 33 | 28 |
| Avg low (°F) | 20 | 19 | 23 | 29 | 37 | 42 | 46 | 47 | 40 | 35 | 27 | 22 |
| Precipitation (in) | 3.0 | 2.5 | 2.9 | 3.0 | 3.8 | 5.2 | 5.4 | 6.2 | 4.1 | 3.5 | 3.5 | 3.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 31 | 31 | 36 | 41 | 49 | 57 |
| Avg temp (°F) | 26 | 25 | 29 | 35 | 43 | 50 |
| Avg low (°F) | 20 | 19 | 23 | 29 | 37 | 42 |
| Precipitation (in) | 3.0 | 2.5 | 2.9 | 3.0 | 3.8 | 5.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 60 | 60 | 53 | 47 | 38 | 32 |
| Avg temp (°F) | 53 | 53 | 47 | 42 | 33 | 28 |
| Avg low (°F) | 46 | 47 | 40 | 35 | 27 | 22 |
| Precipitation (in) | 5.4 | 6.2 | 4.1 | 3.5 | 3.5 | 3.2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 68 | 70 | 72 | 75 | 75 | 69 | 62 | 61 | 63 | 65 | 70 | 70 |
| Relative humidity (%) | 88 | 89 | 87 | 80 | 79 | 79 | 80 | 81 | 83 | 84 | 87 | 88 |
| Wind speed (mph) | 1.8 | 1.7 | 1.4 | 1.2 | 1.0 | 0.8 | 0.9 | 0.9 | 0.9 | 1.0 | 1.1 | 1.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 68 | 70 | 72 | 75 | 75 | 69 |
| Relative humidity (%) | 88 | 89 | 87 | 80 | 79 | 79 |
| Wind speed (mph) | 1.8 | 1.7 | 1.4 | 1.2 | 1.0 | 0.8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 62 | 61 | 63 | 65 | 70 | 70 |
| Relative humidity (%) | 80 | 81 | 83 | 84 | 87 | 88 |
| Wind speed (mph) | 0.9 | 0.9 | 0.9 | 1.0 | 1.1 | 1.5 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from a national meteorological service, measured at Arosa, about 2 km from the city centre.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.