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Portofino, Italy climate
Csa Hot-summer Mediterranean
Portofino has a seasonal mild-temperate climate (Hot-summer Mediterranean, Köppen Csa). The hottest month is August with an average daily high near 28°C, while the coldest is January averaging around 6°C at night. Precipitation totals about 947 mm a year and is strongly seasonal — November alone averages 202 mm while July barely receives 25 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)Portofino climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 12 | 13 | — | 18 | — | 25 | 28 | 28 | 25 | 21 | 16 | 13 |
| Avg temp (°C) | 9 | 10 | 12 | 15 | 18 | 22 | 25 | 25 | 22 | 18 | 13 | 10 |
| Avg low (°C) | 6 | 7 | 9 | 12 | — | 19 | 22 | 22 | 19 | 15 | 10 | 7 |
| Precipitation (mm) | 72 | 55 | 56 | 71 | — | 48 | 25 | 57 | 121 | 151 | 202 | 88 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 12 | 13 | — | 18 | — | 25 |
| Avg temp (°C) | 9 | 10 | 12 | 15 | 18 | 22 |
| Avg low (°C) | 6 | 7 | 9 | 12 | — | 19 |
| Precipitation (mm) | 72 | 55 | 56 | 71 | — | 48 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 28 | 25 | 21 | 16 | 13 |
| Avg temp (°C) | 25 | 25 | 22 | 18 | 13 | 10 |
| Avg low (°C) | 22 | 22 | 19 | 15 | 10 | 7 |
| Precipitation (mm) | 25 | 57 | 121 | 151 | 202 | 88 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 60 | 58 | 54 | 59 | 59 | 49 | 38 | 41 | 51 | 64 | 66 | 63 |
| Relative humidity (%) | 85 | 81 | 78 | 77 | 76 | 72 | 65 | 66 | 70 | 80 | 84 | 85 |
| Wind speed (mph) | 4.1 | 4.5 | 4.4 | 4.1 | 3.8 | 3.7 | 3.7 | 3.5 | 3.6 | 3.7 | 3.8 | 3.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 60 | 58 | 54 | 59 | 59 | 49 |
| Relative humidity (%) | 85 | 81 | 78 | 77 | 76 | 72 |
| Wind speed (mph) | 4.1 | 4.5 | 4.4 | 4.1 | 3.8 | 3.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 38 | 41 | 51 | 64 | 66 | 63 |
| Relative humidity (%) | 65 | 66 | 70 | 80 | 84 | 85 |
| Wind speed (mph) | 3.7 | 3.5 | 3.6 | 3.7 | 3.8 | 3.9 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the WMO's CLINO 1991–2020 collection, measured at Genova_sestri, about 32 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.