Home › Cities › Switzerland › St. Moritz
St. Moritz, Switzerland climate
Dfc Subarctic
St. Moritz has a seasonal cold-temperate climate (Subarctic, Köppen Dfc). The hottest month is July with an average daily high near 19°C, while the coldest is January averaging around −16°C at night. Precipitation totals about 710 mm a year and is strongly seasonal — August alone averages 100 mm while February barely receives 19 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)St. Moritz climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | −1 | 1 | 4 | 8 | 13 | 17 | 19 | 19 | 15 | 11 | 4 | −1 |
| Avg temp (°C) | −8 | −7 | −2 | 2 | 7 | 11 | 12 | 12 | 8 | 4 | −2 | −7 |
| Avg low (°C) | −16 | −16 | −10 | −4 | 0 | 3 | 5 | 5 | 1 | −3 | −8 | −13 |
| Precipitation (mm) | 29 | 19 | 24 | 37 | 67 | 91 | 87 | 100 | 73 | 77 | 70 | 37 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | −1 | 1 | 4 | 8 | 13 | 17 |
| Avg temp (°C) | −8 | −7 | −2 | 2 | 7 | 11 |
| Avg low (°C) | −16 | −16 | −10 | −4 | 0 | 3 |
| Precipitation (mm) | 29 | 19 | 24 | 37 | 67 | 91 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 19 | 19 | 15 | 11 | 4 | −1 |
| Avg temp (°C) | 12 | 12 | 8 | 4 | −2 | −7 |
| Avg low (°C) | 5 | 5 | 1 | −3 | −8 | −13 |
| Precipitation (mm) | 87 | 100 | 73 | 77 | 70 | 37 |
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 | 88 | 90 | 84 | 79 | 77 | 77 | 78 | 81 | 83 | 88 | 87 |
| Wind speed (km/h) | 4.0 | 4.3 | 4.5 | 4.5 | 4.4 | 4.0 | 3.8 | 3.5 | 3.5 | 3.5 | 3.6 | 3.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 68 | 70 | 72 | 75 | 75 | 69 |
| Relative humidity (%) | 86 | 88 | 90 | 84 | 79 | 77 |
| Wind speed (km/h) | 4.0 | 4.3 | 4.5 | 4.5 | 4.4 | 4.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 62 | 61 | 63 | 65 | 70 | 70 |
| Relative humidity (%) | 77 | 78 | 81 | 83 | 88 | 87 |
| Wind speed (km/h) | 3.8 | 3.5 | 3.5 | 3.5 | 3.6 | 3.8 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from a national meteorological service, measured at Samedan, about 4 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.