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Schwyz, Switzerland climate
Cfb Oceanic / temperate
Schwyz has a seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 75°F, while the coldest is January averaging around 28°F at night. Around 47 inches of precipitation falls each year, peaking in August (6.0 inches) and easing off in February (2.3 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)Schwyz climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 41 | 44 | 51 | 59 | 67 | 72 | 75 | 74 | 67 | 59 | 48 | 42 |
| Avg temp (°F) | 35 | 36 | 43 | 50 | 57 | 63 | 66 | 65 | 58 | 51 | 42 | 36 |
| Avg low (°F) | 28 | 29 | 34 | 40 | 47 | 54 | 57 | 56 | 50 | 43 | 35 | 30 |
| Precipitation (in) | 2.8 | 2.3 | 2.8 | 3.2 | 4.6 | 5.4 | 5.5 | 6.0 | 4.1 | 3.3 | 3.2 | 3.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 41 | 44 | 51 | 59 | 67 | 72 |
| Avg temp (°F) | 35 | 36 | 43 | 50 | 57 | 63 |
| Avg low (°F) | 28 | 29 | 34 | 40 | 47 | 54 |
| Precipitation (in) | 2.8 | 2.3 | 2.8 | 3.2 | 4.6 | 5.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 75 | 74 | 67 | 59 | 48 | 42 |
| Avg temp (°F) | 66 | 65 | 58 | 51 | 42 | 36 |
| Avg low (°F) | 57 | 56 | 50 | 43 | 35 | 30 |
| Precipitation (in) | 5.5 | 6.0 | 4.1 | 3.3 | 3.2 | 3.3 |
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 (%) | 86 | 85 | 83 | 79 | 78 | 77 | 77 | 78 | 80 | 82 | 86 | 86 |
| Wind speed (mph) | 3.0 | 3.1 | 3.1 | 2.9 | 2.6 | 2.5 | 2.5 | 2.4 | 2.4 | 2.6 | 2.7 | 2.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 68 | 70 | 72 | 75 | 75 | 69 |
| Relative humidity (%) | 86 | 85 | 83 | 79 | 78 | 77 |
| Wind speed (mph) | 3.0 | 3.1 | 3.1 | 2.9 | 2.6 | 2.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 62 | 61 | 63 | 65 | 70 | 70 |
| Relative humidity (%) | 77 | 78 | 80 | 82 | 86 | 86 |
| Wind speed (mph) | 2.5 | 2.4 | 2.4 | 2.6 | 2.7 | 2.9 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from a national meteorological service, measured at Altdorf, about 15 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.