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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 67°F, while the coldest is January averaging around 4°F at night. Precipitation totals about 28 inches a year and is strongly seasonal — August alone averages 4.0 inches while February barely receives 0.75 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)St. Moritz climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 30 | 33 | 39 | 46 | 55 | 63 | 67 | 66 | 58 | 51 | 39 | 31 |
| Avg temp (°F) | 17 | 19 | 28 | 35 | 44 | 51 | 54 | 53 | 46 | 38 | 28 | 19 |
| Avg low (°F) | 4 | 4 | 15 | 24 | 32 | 38 | 40 | 40 | 34 | 27 | 18 | 8 |
| Precipitation (in) | 1.2 | 0.7 | 0.9 | 1.5 | 2.6 | 3.6 | 3.4 | 4.0 | 2.9 | 3.0 | 2.7 | 1.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 30 | 33 | 39 | 46 | 55 | 63 |
| Avg temp (°F) | 17 | 19 | 28 | 35 | 44 | 51 |
| Avg low (°F) | 4 | 4 | 15 | 24 | 32 | 38 |
| Precipitation (in) | 1.2 | 0.7 | 0.9 | 1.5 | 2.6 | 3.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 67 | 66 | 58 | 51 | 39 | 31 |
| Avg temp (°F) | 54 | 53 | 46 | 38 | 28 | 19 |
| Avg low (°F) | 40 | 40 | 34 | 27 | 18 | 8 |
| Precipitation (in) | 3.4 | 4.0 | 2.9 | 3.0 | 2.7 | 1.4 |
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 (mph) | 2.5 | 2.7 | 2.8 | 2.8 | 2.7 | 2.5 | 2.3 | 2.2 | 2.2 | 2.2 | 2.2 | 2.3 |
| 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 (mph) | 2.5 | 2.7 | 2.8 | 2.8 | 2.7 | 2.5 |
| 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 (mph) | 2.3 | 2.2 | 2.2 | 2.2 | 2.2 | 2.3 |
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.