The climate in Porto Azzurro during September can be summarized as warm, humid and reasonably dry.
September is in the fall / autumn in Porto Azzurro and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a muggy 25°C (76°F), whilst at night 18°C (63°F) is normal.
| Daytime temperature | 24.6°C 76.2°F |
|---|---|
| Nightly temperature | 17.5°C 63.4°F |
| Average temperature | 21°C 69.8°F |
| Daily sunshine | 7.7 hrs |
| Avg rainfall | 52 mm 2 ins |
| Rainy days | 9 days |
| Sea temperature | 23.1°C 73.5°F |
| Humidity | 73% |
| Windspeed | 9kph 6 mph |
On average September is the 6th wettest month of the year in Porto Azzurro with around 52mm 2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.7 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Porto Azzurro in September 2025.
Best places to visit in September
| Hottest month: | August | 27.4°C 81.3°F |
|---|---|---|
| Driest month: | July | 13mm 0.5ins |
| Sunniest month: | July | 10.4hrs |
| Coldest month: | January | 11.5°C 52.7°F |
| Wettest month: | October | 80mm 3.1ins |