September Weather in Marseille, France

Last updated: February 26, 2025

In September, the weather in Marseille, France offers a delightful blend of warmth and mildness. With maximum temperatures reaching 28°C (83°F) and an average of 21°C (70°F), it’s the perfect time to explore the vibrant city. While the minimum temperature dips to a cool 11°C (53°F), the conditions remain pleasant overall. Rainfall is minimal, with 39 mm (1.5 in) spread over just 5 days, allowing for ample opportunities to enjoy outdoor activities. The humidity level averages around 71%, adding freshness to the warm days and inviting visitors to experience the stunning coastal views and charming streets of this historic city.

September Temperature in Marseille

September in Marseille marks a delightful transition from the sweltering summer months to a more temperate climate, presenting a perfect blend of warmth and comfort. With minimum temperatures averaging around 11°C (53°F) and daytime highs reaching up to 28°C (83°F), this month offers ideal conditions for outdoor activities and explorations. The average temperature settles at a pleasant 21°C (70°F), making it a prime time for tourists to enjoy the vibrant city without the intense heat of August. As summer fades, visitors can relish the beautiful Mediterranean scenery while basking in milder temperatures, signaling the onset of autumn with an invigorating charm.

September Weather in Marseille: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Marseille, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec485053566370757570635550
Data source: Temperature data for Marseille generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Marseille

In September, Marseille experiences a transition towards the wetter months, with average precipitation of 39 mm (1.5 in) spread across about 5 days of rain. This amount marks a slight uptick compared to the drier summer months of June (24 mm) and July (9 mm), where rainfall was minimal, highlighting a significant seasonal change. As summer fades, the city starts to prepare for the more substantial downpours of autumn, with October and November typically bringing much higher totals of 88 mm (3.5 in) and 127 mm (5.0 in), respectively. While September doesn’t reach these peak levels, its precipitation serves as a gentle reminder of the wetter weather to come, encouraging a lush revival of the Mediterranean landscapes.

September Precipitation Trends in Marseille

The chart displays monthly precipitation patterns in Marseille, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec554049706324917398812776
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Marseille

As the summer heat begins to wane, September in Marseille sees a slight uptick in humidity levels, averaging around 71%. This marks a transition from the drier conditions of August, where humidity dipped to 66%, suggesting that the lingering warmth is accompanied by a refreshing return of moisture in the air. Following a trend of gradual increase, humidity starts to rise again as autumn approaches, paving the way for the wetter months ahead. By the time October rolls around, levels jump significantly to 78%, highlighting a seasonal shift in the Mediterranean climate. Overall, September serves as a bridge between the warm, dry summer and the cooler, more humid fall.

September Average Humidity in Marseille

This chart illustrates the average monthly humidity levels in Marseille, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec80%74%71%75%74%72%69%66%71%78%82%79%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Marseille

As summer transitions into autumn, September in Marseille witnesses a slight dip in the UV Index, dropping to 7, which falls into the high exposure category. This shift indicates that while the intense sun of August yields slightly, it still poses a notable risk for skin damage with a burn time of just 25 minutes. Comparatively, August maintained a higher UV Index of 8, yet September's continued high ratings underscore the importance of sun protection during this period. With just a few weeks left to enjoy outdoor activities under the sun, it’s essential to stay vigilant and informed. For more insights into the UV level and how to safeguard your skin, check out the detailed information here: Marseille UV Index.

Maximum UV Index Levels in Marseille for September

The chart shows the monthly maximum UV Index (UVI) for Marseille in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec2457910987532
Data source: Marseille September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Marseille

As September rolls in, Marseille continues to bask in the warm glow of the Mediterranean sun, with an impressive 345 hours of sunshine. This month gracefully bridges the vibrant summer and the gentle onset of autumn, boasting slightly less sunlight than the dazzling peak of July, yet providing a comforting brilliance that draws both locals and visitors outdoors. Following the sun-drenched days of August, September remains a captivating time for exploring the city’s picturesque streets and stunning coastline. With sunshine hours gradually tapering off into October, it's a perfect moment to savor Marseille’s lingering warmth before the cooler months set in.

Monthly Sunshine Duration in Marseille: September Highlighted

The September sunshine duration represents the total number of hours Marseille experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec199h257h330h352h406h423h436h404h345h310h252h244h
Data source: Marseille September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Marseille During September

In September, Marseille enjoys a pleasant transition from the sultry summer months, with a 52% chance of sunny weather. This marks a slight decline from the summer peak in August, which boasts a 73% probability of sunshine. However, it remains relatively favorable compared to the earlier months of the year, particularly March and April, which have just 65% and 55% chances, respectively. As the city shifts toward the autumn season, it maintains a comfortable level of sun, making September an appealing time for visitors seeking to bask in the Mediterranean warmth before cooler days approach.

Percentage of Sunny Days in September in Marseille

The chart illustrates the percentage of sunny days in Marseille throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Marseille experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec45%45%65%55%48%61%67%73%52%57%50%55%
Data source: Marseille September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Marseille in September

As summer fades into autumn, September in Marseille boasts a delightful transition with about 12 hours of daylight. This month serves as a gentle bridge from the sun-drenched days of July and August, which deliver around 14 and 13 hours of sunshine, respectively. With daylight gradually decreasing, the days are still long enough to enjoy the vibrant coastal atmosphere without the sweltering heat of the peak summer months. Following September, the daylight continues to wane as October sets in, leading to a cozy autumn ambiance, reminiscent of the softer light and changing leaves. This rhythm of daylight not only shapes the town's activities but also subtly influences the mood, encouraging residents and visitors alike to savor the lingering warmth before winter's arrival.

Average Daylight Hours in Marseille for September

The chart illustrates the variation in daylight duration in Marseille throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 21m10h 30m11h 57m13h 26m14h 41m15h 19m14h 59m13h 52m12h 27m10h 58m9h 40m9h
Data source: Marseille daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Marseille

As summer transitions to autumn, September in Marseille sees a gentle breeze with an average wind speed of 4.3 m/s (10 mph). This slight decrease from the summer months reflects the onset of cooler air currents, yet it maintains a steady rhythm reminiscent of the Mediterranean charm. Interestingly, September's winds are consistent with those experienced during the preceding months of July and August, indicating a smooth, if not unremarkable, shift in the season. Overall, as the vibrancy of summer fades, the winds of September offer a refreshing embrace, setting the stage for the autumn breezes to come.

Average September Wind Speed in Marseille

The chart displays monthly wind speed patterns in Marseille, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec6.45.64.54.35.44.14.54.64.3 m/s4.65.45.2
Data source: Marseille September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Marseille Compares to Other Months

The weather in Marseille changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Marseille and find detailed weather information for every month.

September typically brings milder and warmer weather compared to January. With average temperatures reaching 21°C (70°F) and highs peaking at 28°C (83°F), September offers pleasant conditions, albeit with some humidity at around 71%. Precipitation is moderate during this month, totaling 39 mm (1.5 in) over approximately 5 days.

In contrast, January is significantly cooler, featuring an average temperature of just 9°C (48°F) and maximums that only reach 16°C (62°F). It also experiences higher humidity at 80% and slightly more precipitation, amounting to 55 mm (2.2 in) across about 7 days. For more detailed insights about the weather during this month, you can check out Marseille weather in January.

September and February present quite contrasting weather patterns. In September, temperatures range from a mild 11°C (53°F) to a pleasantly warm 28°C (83°F), with an average of 21°C (70°F) and relatively low precipitation of 39 mm (1.5 in) over about 5 days. The humidity is also moderate at 71%, making it a comfortable time of year. In stark contrast, February experiences cooler temperatures with a minimum of -1°C (31°F) and a maximum of 18°C (65°F), averaging only 10°C (50°F). Despite slightly higher precipitation of 40 mm (1.6 in), it occurs over 7 days, contributing to a higher humidity level of 73%. For a closer look at the specifics of February weather, check out Marseille weather in February.

September and March present quite different weather patterns. In September, temperatures range from a mild minimum of 11°C (53°F) to a comfortable maximum of 28°C (83°F), averaging at 21°C (70°F). The month typically sees around 39 mm (1.5 in) of precipitation over about 5 days, with a consistent humidity level of 71%. In contrast, March experiences cooler temperatures, with a minimum of 1°C (34°F), an average of 11°C (53°F), and a maximum of 20°C (68°F). Precipitation in March is slightly higher at 49 mm (1.9 in) across 6 days, yet humidity remains the same at 71%. For more detailed insights, you can check Marseille weather in March.

September generally boasts warmer temperatures compared to April, with average highs reaching 28°C (83°F) and lows around 11°C (53°F), while April's temperatures peak at 21°C (70°F) and dip to a cooler 4°C (39°F). Additionally, September experiences less precipitation, averaging 39 mm (1.5 in) over 5 days, whereas April tends to be wetter, with 70 mm (2.7 in) of rain spread over 8 days. Humidity levels are also slightly higher in April at 75%, compared to September's 71%. For more detailed insights into April's weather, check out Marseille weather in April.

When comparing the weather in September and May, we can see some notable differences. September tends to be warmer, with average temperatures around 21°C (70°F) and maximums reaching up to 28°C (83°F), while May has a slightly cooler average of 17°C (63°F) and maximums that peak at 27°C (82°F). Precipitation is also different; September experiences less rain with 39 mm (1.5 in) over about 5 days, whereas May is wetter, receiving 63 mm (2.5 in) across 8 days. Humidity levels are comparable, with September at 71% and May a bit higher at 74%. For more detailed information about May weather, you can check Marseille weather in May.

In comparing the weather between September and June, both months enjoy relatively mild average temperatures around 21°C (70°F), but the extremes differ, with September reaching a maximum of 28°C (83°F) while June can peak at 31°C (88°F). September experiences a little more rainfall, totaling 39 mm over about 5 days, compared to June's 24 mm across 4 days. Interestingly, humidity levels remain similar, with September at 71% and June slightly higher at 72%. For those interested in exploring the specific conditions of June, you can find detailed information here: Marseille weather in June.

September and July showcase distinct weather patterns in terms of temperature and precipitation. In September, temperatures range from a minimum of 11°C (53°F) to a maximum of 28°C (83°F), with an average of 21°C (70°F). This month experiences more rainfall, totaling 39 mm (1.5 in) over about five days, coupled with a humidity level of 71%. In contrast, July tends to be warmer, with temperatures ranging from a minimum of 17°C (62°F) to a maximum of 30°C (86°F) and an average of 24°C (75°F). It’s also much drier during this month, receiving only 9 mm (0.4 in) of precipitation on just one day, and maintaining a slightly lower humidity of 69%. For more detailed information, check out Marseille weather in July.

In comparing the weather of September and August, September shows a noticeable drop in temperature, with averages tending towards a cooler 21°C (70°F) compared to August's warmer 24°C (76°F). While August boasts higher maximum temperatures, reaching up to 32°C (90°F), September peaks at a milder 28°C (83°F). Additionally, September experiences more days of rain, totaling 39 mm (1.5 in) over five days, contrasting sharply with August's drier conditions, which recorded only 16 mm (0.6 in) of precipitation over just one day. Humidity levels increase slightly in September, averaging 71%, compared to 66% in August. For a more in-depth look at the weather specifics during August, you can check out Marseille weather in August.

September typically enjoys warmer temperatures, with an average of 21°C (70°F) and maximums reaching up to 28°C (83°F). In contrast, October sees a noticeable drop in temperature, averaging 17°C (63°F) and peaking at 25°C (77°F). Additionally, October experiences more precipitation, with 88 mm (3.5 in) spread over 7 days compared to September's 39 mm (1.5 in) over just 5 days. The humidity also rises slightly in October, reaching 78% compared to 71% in September. For more detailed information, you can visit Marseille weather in October.

September's weather is characterized by warmer temperatures, with an average of 21°C (70°F) and highs reaching up to 28°C (83°F), making it a pleasant month for outdoor activities. In contrast, November sees a noticeable decline in temperature, averaging just 13°C (56°F), and maximum highs of 19°C (67°F), ushering in a more autumnal chill. Additionally, September experiences relatively low precipitation at 39 mm (1.5 in) over about 5 days, while November is significantly wetter, with 127 mm (5.0 in) falling over 12 days, making it one of the rainiest months of the year. The increased humidity levels in November, at 82%, add to the crisp autumn feel compared to September’s 71%. For more detailed insights into the weather patterns, check out Marseille weather in November.

In September, the weather is generally mild with average temperatures around 21°C (70°F) and maximums reaching up to 28°C (83°F), making it a pleasant month for outdoor activities. The humidity sits at a comfortable 71%, and there is relatively low precipitation, totaling 39 mm over about 5 days. In contrast, December brings a significant drop in temperatures, with an average of just 10°C (50°F) and maximums peaking at 18°C (64°F). The month is also wetter, with 76 mm of precipitation spread across 9 days, and a slight increase in humidity to 79%. For a closer look at December weather specifics, you can visit Marseille weather in December.

Compare Marseille's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Marseille

As summer gently gives way to autumn, September in Marseille ushers in a delightful transition characterized by milder temperatures and a noticeable dip in humidity. While the warm days still offer a taste of summer's linger, the evenings become refreshingly cool, creating a pleasant atmosphere for both locals and visitors alike. Rainfall remains relatively low, with only a few days of light showers, making it an ideal time for outdoor explorations. This month stands out with its balance of warmth and comfort, distinct from the sweltering heat of July and August. For a deeper dive into what to expect throughout the year, check out the detailed insights on the Marseille Climate page.