The climate in Fontvieille during September can be summarized as warm and reasonably dry.
September is in the fall / autumn in Fontvieille and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 25°C (76°F), whilst at night 14°C (58°F) is normal.
Daytime temperature | 24.6°C 76.2°F |
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Nightly temperature | 14.3°C 57.7°F |
Average temperature | 19.4°C 66.9°F |
Daily sunshine | 8.7 hrs |
Avg rainfall | 73 mm 2.9 ins |
Rainy days | 7 days |
Sea temperature | 20.7°C 69.3°F |
Humidity | 68% |
Windspeed | 13kph 8 mph |
On average September is the 2nd wettest month of the year in Fontvieille with around 73mm 2.9 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 8.7 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 Fontvieille in September 2025.
Best places to visit in September
Hottest month: | July | 28.8°C 83.8°F |
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Driest month: | July | 22mm 0.9ins |
Sunniest month: | July | 12.3hrs |
Coldest month: | January | 9.6°C 49.3°F |
Wettest month: | October | 103mm 4.1ins |