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Velletri, Italy climate
Csa Hot-summer Mediterranean
Velletri has a seasonal mild-temperate climate (Hot-summer Mediterranean, Köppen Csa). The hottest month is August with an average daily high near 89°F, while the coldest is January averaging around 38°F at night. Precipitation totals about 33 inches a year and is strongly seasonal — November alone averages 4.9 inches while July barely receives 0.81 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)Velletri climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 56 | 57 | 62 | 67 | 75 | 83 | 88 | 89 | 81 | 73 | 65 | 58 |
| Avg temp (°F) | 47 | 47 | 52 | 57 | 65 | 72 | 77 | 78 | 71 | 64 | 56 | 49 |
| Avg low (°F) | 38 | 38 | 42 | 47 | 54 | 61 | 65 | 66 | 61 | 54 | 48 | 40 |
| Precipitation (in) | 2.9 | 2.7 | 2.7 | 2.7 | 2.3 | 1.3 | 0.8 | 1.3 | 3.5 | 4.3 | 4.9 | 4.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 56 | 57 | 62 | 67 | 75 | 83 |
| Avg temp (°F) | 47 | 47 | 52 | 57 | 65 | 72 |
| Avg low (°F) | 38 | 38 | 42 | 47 | 54 | 61 |
| Precipitation (in) | 2.9 | 2.7 | 2.7 | 2.7 | 2.3 | 1.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 88 | 89 | 81 | 73 | 65 | 58 |
| Avg temp (°F) | 77 | 78 | 71 | 64 | 56 | 49 |
| Avg low (°F) | 65 | 66 | 61 | 54 | 48 | 40 |
| Precipitation (in) | 0.8 | 1.3 | 3.5 | 4.3 | 4.9 | 4.0 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 58 | 54 | 54 | 53 | 46 | 34 | 21 | 23 | 40 | 49 | 58 | 57 |
| Relative humidity (%) | 81 | 78 | 76 | 73 | 68 | 62 | 56 | 56 | 67 | 75 | 81 | 81 |
| Wind speed (mph) | 4.4 | 4.7 | 4.9 | 4.8 | 4.4 | 4.4 | 4.6 | 4.4 | 4.3 | 4.4 | 4.9 | 4.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 58 | 54 | 54 | 53 | 46 | 34 |
| Relative humidity (%) | 81 | 78 | 76 | 73 | 68 | 62 |
| Wind speed (mph) | 4.4 | 4.7 | 4.9 | 4.8 | 4.4 | 4.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 21 | 23 | 40 | 49 | 58 | 57 |
| Relative humidity (%) | 56 | 56 | 67 | 75 | 81 | 81 |
| Wind speed (mph) | 4.6 | 4.4 | 4.3 | 4.4 | 4.9 | 4.7 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the WMO's CLINO 1991–2020 collection, measured at Latina, about 19 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.