Weather in Marseille in September 2025
Average weather
Average temperature in Marseille in September
The expected average maximum temperature in September is +28°C with a maximum of +33°C and a minimum of +11°C.
The average maximum temperature goes up 5% by the end of the month, compared with the beginning of the month, from +27°C to +28°C.
Is Marseille warm or cold in September?
Marseille is typically warm in September.
Maximum temperatures go down compared to the previous month from +29°C to +26°C. The minimum temperature also goes down from +20°C to +17°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how September is compared to other months in Marseille:
Water temperature in Marseille in September
Water in Marseille in September is Comfortable. It varies from +20°C to +24°C, with an average of +22°C. This is almost similar to the air temperature, which averages +26°C.
The water temperature in September is one of the warmest of the entire year:
Can you swim in Marseille in September?
Climate in Marseille in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +29°C | +26°C | +21°C | ||||
| Min. temperature | ||||||
| +12°C | +8°C | -1°C | ||||
| Max. temperature | ||||||
| +38°C | +35°C | +30°C | ||||
| Rainfall | ||||||
| 20 mm | 57 mm | 89 mm | ||||
| Wind | ||||||
| 4 m/s | 4 m/s | 5 m/s | ||||
| Avg. water temperature | ||||||
| +23°C | +22°C | +19°C | ||||
| Humidity | ||||||
| 68% | 71% | 75% | ||||
| Air pressure | ||||||
| 1014 HPa | 1015 HPa | 1015 HPa | ||||
| Sunny days | ||||||
| 18 | 14 | 9 | ||||
| Cloudy days | ||||||
| 8 | 8 | 10 | ||||
| Rainy days | ||||||
| 5 | 8 | 11 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September typically has worse weather conditions compared to August. It’s getting colder in September. From +29°C in the day, the average maximum temperature lowers to +26°C. Prepare for more rain. Average rainfall goes from 20 mm to 57 mm. Humidity rises from 68% to 71%. The average wind speed doesn’t change much during September, staying around 4 m/s. The days becoming less sunny, going from 18 sunny days in August to 14 in September.
Next month (October) brings a further decline in the weather.
Wind
The average wind speed is 3 m/s getting up to 11 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Marseille is gradually increasing during September, going from 3 m/s to 4 m/s over the course of the month.
Rain
How was the weather last September in Marseille?
Climate Change over Years
The climate in Marseille in September has not changed much over the last 43 years.
The average temperature was the lowest in 1980 (+18°C) and the highest in 2022 (+22°C). The driest year was 2017 with only 303 mm of rainfall, and the wettest year was 2019 with 1057 mm.
FAQ
Is September a good time to visit Marseille?
Can you sunbathe in Marseille in September?
Can you swim in Marseille in September?
Is Marseille rainy in September?
Is it sunny in Marseille in September?
Other cities in France
Monthly weather in Marseille
Source of the data
For this page, we’ve looked at the typical weather in Marseille, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.