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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 24°C, while the coldest is January averaging around −2°C at night. Around 1186 mm of precipitation falls each year, peaking in August (154 mm) and easing off in February (59 mm).
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 (°C) | 5 | 6 | 11 | 15 | 19 | 22 | 24 | 24 | 19 | 15 | 9 | 5 |
| Avg temp (°C) | 2 | 2 | 6 | 10 | 14 | 17 | 19 | 19 | 15 | 11 | 6 | 2 |
| Avg low (°C) | −2 | −2 | 1 | 4 | 9 | 12 | 14 | 13 | 10 | 6 | 2 | −1 |
| Precipitation (mm) | 70 | 59 | 72 | 81 | 117 | 138 | 141 | 154 | 105 | 84 | 81 | 83 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 5 | 6 | 11 | 15 | 19 | 22 |
| Avg temp (°C) | 2 | 2 | 6 | 10 | 14 | 17 |
| Avg low (°C) | −2 | −2 | 1 | 4 | 9 | 12 |
| Precipitation (mm) | 70 | 59 | 72 | 81 | 117 | 138 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 24 | 24 | 19 | 15 | 9 | 5 |
| Avg temp (°C) | 19 | 19 | 15 | 11 | 6 | 2 |
| Avg low (°C) | 14 | 13 | 10 | 6 | 2 | −1 |
| Precipitation (mm) | 141 | 154 | 105 | 84 | 81 | 83 |
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.