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Zermatt, Switzerland climate
Dfc Subarctic
Zermatt has a seasonal cold-temperate climate (Subarctic, Köppen Dfc). The hottest month is July with an average daily high near 68°F, while the coldest is January averaging around 19°F at night. Around 25 inches of precipitation falls each year, peaking in May (3.0 inches) and easing off in February (1.2 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)Zermatt climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 33 | 35 | 42 | 50 | 57 | 64 | 68 | 67 | 60 | 52 | 41 | 35 |
| Avg temp (°F) | 25 | 26 | 32 | 39 | 47 | 53 | 57 | 56 | 49 | 42 | 33 | 27 |
| Avg low (°F) | 19 | 19 | 25 | 31 | 38 | 44 | 47 | 47 | 41 | 35 | 26 | 21 |
| Precipitation (in) | 1.7 | 1.2 | 1.3 | 1.6 | 3.0 | 2.8 | 2.3 | 2.7 | 2.0 | 2.2 | 2.6 | 1.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 33 | 35 | 42 | 50 | 57 | 64 |
| Avg temp (°F) | 25 | 26 | 32 | 39 | 47 | 53 |
| Avg low (°F) | 19 | 19 | 25 | 31 | 38 | 44 |
| Precipitation (in) | 1.7 | 1.2 | 1.3 | 1.6 | 3.0 | 2.8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 68 | 67 | 60 | 52 | 41 | 35 |
| Avg temp (°F) | 57 | 56 | 49 | 42 | 33 | 27 |
| Avg low (°F) | 47 | 47 | 41 | 35 | 26 | 21 |
| Precipitation (in) | 2.3 | 2.7 | 2.0 | 2.2 | 2.6 | 1.9 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 68 | 69 | 68 | 69 | 72 | 65 | 59 | 59 | 61 | 66 | 71 | 71 |
| Relative humidity (%) | 83 | 83 | 86 | 82 | 78 | 75 | 74 | 75 | 78 | 80 | 85 | 83 |
| Wind speed (mph) | 3.6 | 3.7 | 3.8 | 3.8 | 3.6 | 3.4 | 3.4 | 3.1 | 3.1 | 3.2 | 3.4 | 3.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 68 | 69 | 68 | 69 | 72 | 65 |
| Relative humidity (%) | 83 | 83 | 86 | 82 | 78 | 75 |
| Wind speed (mph) | 3.6 | 3.7 | 3.8 | 3.8 | 3.6 | 3.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 59 | 59 | 61 | 66 | 71 | 71 |
| Relative humidity (%) | 74 | 75 | 78 | 80 | 85 | 83 |
| Wind speed (mph) | 3.4 | 3.1 | 3.1 | 3.2 | 3.4 | 3.6 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from a national meteorological service, measured at Zermatt, about 1 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.