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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 32°C, while the coldest is January averaging around 4°C at night. Precipitation totals about 846 mm a year and is strongly seasonal — November alone averages 124 mm while July barely receives 21 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)Velletri climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 13 | 14 | 16 | 19 | 24 | 28 | 31 | 32 | 27 | 23 | 18 | 14 |
| Avg temp (°C) | 8 | 9 | 11 | 14 | 18 | 22 | 25 | 26 | 22 | 18 | 13 | 10 |
| Avg low (°C) | 4 | 4 | 6 | 8 | 12 | 16 | 19 | 19 | 16 | 12 | 9 | 5 |
| Precipitation (mm) | 74 | 69 | 70 | 69 | 58 | 32 | 21 | 32 | 88 | 109 | 124 | 102 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 13 | 14 | 16 | 19 | 24 | 28 |
| Avg temp (°C) | 8 | 9 | 11 | 14 | 18 | 22 |
| Avg low (°C) | 4 | 4 | 6 | 8 | 12 | 16 |
| Precipitation (mm) | 74 | 69 | 70 | 69 | 58 | 32 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 32 | 27 | 23 | 18 | 14 |
| Avg temp (°C) | 25 | 26 | 22 | 18 | 13 | 10 |
| Avg low (°C) | 19 | 19 | 16 | 12 | 9 | 5 |
| Precipitation (mm) | 21 | 32 | 88 | 109 | 124 | 102 |
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.