The climate in Marseille during September can be summarized as warm and reasonably dry.
September is in the fall / autumn in Marseille and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 24°C (75°F), whilst at night 15°C (58°F) is normal.
Daytime temperature | 24°C 75.1°F |
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Nightly temperature | 14.7°C 58.4°F |
Average temperature | 19.3°C 66.7°F |
Daily sunshine | 8.9 hrs |
Avg rainfall | 66 mm 2.6 ins |
Rainy days | 6 days |
Sea temperature | 21°C 69.8°F |
Humidity | 71% |
Windspeed | 13.7kph 9 mph |
On average September is the 4th wettest month of the year in Marseille with around 66mm 2.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 6 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 Marseille in September 2025.
Best places to visit in September
Hottest month: | July | 27.8°C 82°F |
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Driest month: | July | 14mm 0.6ins |
Sunniest month: | July | 12.5hrs |
Coldest month: | January | 10.1°C 50.2°F |
Wettest month: | October | 84mm 3.3ins |