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Bellinzona, Switzerland climate
Cfb Oceanic / temperate
Bellinzona has a seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 28°C, while the coldest is January averaging around −3°C at night. Around 1371 mm of precipitation falls each year, peaking in August (164 mm) and easing off in February (49 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)Bellinzona climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 6 | 9 | 14 | 18 | 21 | 25 | 28 | 27 | 22 | 17 | 11 | 6 |
| Avg temp (°C) | 1 | 3 | 7 | 11 | 15 | 19 | 20 | 20 | 16 | 11 | 6 | 1 |
| Avg low (°C) | −3 | −1 | 2 | 5 | 9 | 13 | 15 | 15 | 11 | 7 | 2 | −2 |
| Precipitation (mm) | 58 | 49 | 62 | 106 | 142 | 154 | 145 | 164 | 138 | 134 | 147 | 71 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 6 | 9 | 14 | 18 | 21 | 25 |
| Avg temp (°C) | 1 | 3 | 7 | 11 | 15 | 19 |
| Avg low (°C) | −3 | −1 | 2 | 5 | 9 | 13 |
| Precipitation (mm) | 58 | 49 | 62 | 106 | 142 | 154 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 27 | 22 | 17 | 11 | 6 |
| Avg temp (°C) | 20 | 20 | 16 | 11 | 6 | 1 |
| Avg low (°C) | 15 | 15 | 11 | 7 | 2 | −2 |
| Precipitation (mm) | 145 | 164 | 138 | 134 | 147 | 71 |
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 (%) | 89 | 91 | 93 | 87 | 81 | 79 | 79 | 80 | 83 | 86 | 90 | 89 |
| Wind speed (km/h) | 4.0 | 4.2 | 4.1 | 4.1 | 3.9 | 3.4 | 3.2 | 3.0 | 3.1 | 3.1 | 3.4 | 3.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 68 | 70 | 72 | 75 | 75 | 69 |
| Relative humidity (%) | 89 | 91 | 93 | 87 | 81 | 79 |
| Wind speed (km/h) | 4.0 | 4.2 | 4.1 | 4.1 | 3.9 | 3.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 62 | 61 | 63 | 65 | 70 | 70 |
| Relative humidity (%) | 79 | 80 | 83 | 86 | 90 | 89 |
| Wind speed (km/h) | 3.2 | 3.0 | 3.1 | 3.1 | 3.4 | 3.7 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from a national meteorological service, measured at Grono, about 13 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.