The climate in Portoscuso during September can be summarized as warm, humid and reasonably dry.
September is in the fall / autumn in Portoscuso and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a muggy 27°C (80°F), whilst at night 17°C (63°F) is normal.
| Daytime temperature | 26.5°C 79.6°F |
|---|---|
| Nightly temperature | 17.2°C 62.9°F |
| Average temperature | 21.8°C 71.2°F |
| Daily sunshine | 8.9 hrs |
| Avg rainfall | 38 mm 1.5 ins |
| Rainy days | 7 days |
| Sea temperature | 24.2°C 75.6°F |
| Humidity | 73% |
| Windspeed | 11.2kph 7 mph |
On average September is the 5th driest month of the year in Portoscuso with around 38mm 1.5 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.9 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 Portoscuso in September 2025.
Best places to visit in September
| Hottest month: | August | 29°C 84.2°F |
|---|---|---|
| Driest month: | July | 4mm 0.2ins |
| Sunniest month: | July | 11.9hrs |
| Coldest month: | January | 13.4°C 56.1°F |
| Wettest month: | November | 99mm 3.9ins |