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Grosseto, Italy climate
Csa Hot-summer Mediterranean
Grosseto 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 37°F at night. Precipitation totals about 22 inches a year and is strongly seasonal — November alone averages 4.2 inches while July barely receives 0.59 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)Grosseto climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 55 | 57 | 61 | 67 | 75 | 83 | 88 | 89 | 81 | 72 | 63 | 56 |
| Avg temp (°F) | 46 | 47 | 51 | 56 | 64 | 71 | 76 | 77 | 70 | 63 | 54 | 48 |
| Avg low (°F) | 37 | 37 | 41 | 45 | 52 | 59 | 64 | 65 | 59 | 53 | 46 | 39 |
| Precipitation (in) | 1.6 | 1.7 | 1.6 | 1.5 | 1.5 | 0.9 | 0.6 | 0.9 | 2.6 | 2.2 | 4.2 | 2.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 55 | 57 | 61 | 67 | 75 | 83 |
| Avg temp (°F) | 46 | 47 | 51 | 56 | 64 | 71 |
| Avg low (°F) | 37 | 37 | 41 | 45 | 52 | 59 |
| Precipitation (in) | 1.6 | 1.7 | 1.6 | 1.5 | 1.5 | 0.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 88 | 89 | 81 | 72 | 63 | 56 |
| Avg temp (°F) | 76 | 77 | 70 | 63 | 54 | 48 |
| Avg low (°F) | 64 | 65 | 59 | 53 | 46 | 39 |
| Precipitation (in) | 0.6 | 0.9 | 2.6 | 2.2 | 4.2 | 2.8 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 60 | 59 | 60 | 55 | 42 | 29 | 31 | 48 | 58 | 66 | 65 |
| Relative humidity (%) | 87 | 83 | 78 | 75 | 70 | 64 | 58 | 59 | 68 | 79 | 85 | 87 |
| Wind speed (mph) | 4.4 | 4.6 | 4.7 | 4.2 | 3.8 | 3.5 | 3.6 | 3.4 | 3.8 | 4.1 | 4.3 | 4.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 60 | 59 | 60 | 55 | 42 |
| Relative humidity (%) | 87 | 83 | 78 | 75 | 70 | 64 |
| Wind speed (mph) | 4.4 | 4.6 | 4.7 | 4.2 | 3.8 | 3.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 29 | 31 | 48 | 58 | 66 | 65 |
| Relative humidity (%) | 58 | 59 | 68 | 79 | 85 | 87 |
| Wind speed (mph) | 3.6 | 3.4 | 3.8 | 4.1 | 4.3 | 4.4 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Grosseto, a weather station, about 3 km from the city centre. The underlying daily records come from NOAA's global station network.
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.