Portofino weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Good
Best time to visit: July – August
What is the weather like in Portofino in September?
In September, Portofino is warm: daytime highs average 23 °C, and nights cool down to about 18 °C. The sea averages 23.3 °C – pleasant for swimming. The sun shines for around 7 hours a day. Rain is frequent, with about 9 rainy days and 108 mm in total. All in all, September is a good month for a holiday in Portofino.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 96 | 73 | 29 |
| Day | 26° | 23° | 19° |
| Night | 22° | 18° | 15° |
| Sea | 25° | 23° | 21° |
| Sun | 9 h | 7 h | 5 h |
| Rain days | 7 | 9 | 13 |
More details for September
- Daylight
- 12 h 35 min07:01 – 19:36
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 5 daysdew point 18 °C or moreAll months
- Wind
- 16 km/haverage daily peakAll months
- Cloud cover
- 43 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+2Europe/Rome
How the score comes together
- Temperatureweight 35 %68 %
- Seaweight 25 %90 %
- Sunshineweight 20 %70 %
- Few rainy daysweight 20 %64 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in September
- Swimwear
- Sunscreen
- Rain jacket or umbrella
Portofino in September: quick answers
Is Portofino hot in September?
Warm rather than hot: in September, daytime highs in Portofino average 23 °C and nights cool to about 18 °C.
Can you swim in Portofino in September?
Yes. In September the sea averages 23.3 °C – pleasant for swimming.
Does it rain much in Portofino in September?
Rain is frequent, with about 9 rainy days and 108 mm in total.
Portofino month by month
The whole year in PortofinoAll destinations: ItalyWhere to go in SeptemberSea temperature in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences