Aver-o-Mar Weather in September
What's the weather like in Aver-o-Mar (Porto) in September 2025?
The climate in Aver-o-Mar during September can be summarized as warm and reasonably dry.
September is in the fall / autumn in Aver-o-Mar and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around 24°C (75°F), whilst at night 14°C (57°F) is normal.
| Daytime temperature | 23.8°C 74.8°F |
|---|---|
| Nightly temperature | 13.9°C 56.9°F |
| Average temperature | 18.8°C 65.8°F |
| Daily sunshine | 8 hrs |
| Avg rainfall | 70 mm 2.7 ins |
| Rainy days | 9 days |
| Sea temperature | 18.5°C 65.3°F |
| Humidity | 76% |
| Windspeed | 13.7kph 9 mph |
On average September is the 4th driest month of the year in Aver-o-Mar with around 70mm 2.7 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 8 hours of sunshine per day.
September temperatures in Aver-o-Mar
September rainfall
September hourly sunshine
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 Aver-o-Mar in September 2025.
Other monthly averages
Best places to visit in September
Aver-o-Mar weather stats
| Hottest month: | July | 24.5°C 76.1°F |
|---|---|---|
| Driest month: | July | 19mm 0.7ins |
| Sunniest month: | August | 10.1hrs |
| Coldest month: | January | 13.4°C 56.1°F |
| Wettest month: | January | 192mm 7.6ins |
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