September Weather in Nancy, France

Last updated: February 26, 2025

In Nancy, France, September showcases a varied climate, with maximum temperatures peaking at a warm 33°C (92°F), while the average settles around a comfortable 16°C (61°F). The month experiences a significant minimum temperature of 4°C (39°F), illustrating the transition from summer to autumn. With a total precipitation amount of 61 mm (2.4 in) over the course of 9 days, the humidity remains relatively high at 83%, adding to the overall lushness of the season. This blend of warmth and moisture creates an intriguing atmosphere, perfect for exploring the charming streets and historical sites of Nancy.

September Temperature in Nancy

In September, Nancy experiences a delightful transition into autumn, with temperatures gradually cooling down. The month kicks off with a minimum temperature of 4°C (39°F), while the average hovers around a comfortable 16°C (61°F). This marks a noticeable shift from the scorching summer days, as the maximum reaches up to 33°C (92°F). As the month progresses, the warmth begins to wane, hinting at the crisp air of October. This blend of mild days and cool nights creates an inviting atmosphere for both locals and visitors, making it a perfect time to explore the charming streets and vibrant parks of Nancy. The gradual temperature decline illustrates the gentle shift from summer's embrace toward the cooler embrace of autumn.

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

The chart illustrates September temperature patterns in Nancy, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec374144505767696861534340
Data source: Temperature data for Nancy 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 Nancy

In September, Nancy experiences a moderate level of precipitation, with 61 mm (2.4 in) of rainfall spread over approximately 9 days. This marks a slight increase compared to the drier months of August and July, suggesting a subtle shift towards the wetter autumn season. As the summer warmth begins to fade, this month serves as a transitional bridge, setting the stage for the heavier rains of October and November, which typically average around 67 mm (2.6 in) and 75 mm (3.0 in), respectively. The trend of increasing rainfall from summer to fall emphasizes Nancy's characteristic climate, where late summer dryness gradually gives way to the revitalizing moisture of autumn.

September Precipitation Trends in Nancy

The chart displays monthly precipitation patterns in Nancy, 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.
JanFebMarAprMayJunJulAugSepOctNovDec8277774376746045616775116
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Nancy

In September, humidity in Nancy, France experiences a gentle increase, reaching 83% as summer transitions to autumn. Following the warm months of July and August, which maintained a relatively mild humidity of 82% and 80% respectively, September’s slight uptick suggests a return to the moisture-rich conditions that characterize the region as it heads towards winter. This trend marks a gradual shift from the warmer, drier summer air, heralding the onset of the rainier season, with humidity levels anticipated to rise further in the following months, peaking at 93% in December. The fluctuating humidity showcases Nancy’s distinctly continental climate, with substantial variations throughout the year, impacting both the environment and daily life in this charming French city.

September Average Humidity in Nancy

This chart illustrates the average monthly humidity levels in Nancy, 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.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%88%84%81%82%82%80%83%89%91%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Nancy

As September unfolds in Nancy, France, the UV Index takes a step back from the peak summer values, settling at a moderate 6. This marks a transition into the high exposure category, where sun enthusiasts still need to be cautious, with a recommended burn time of 25 minutes. Compared to the very high indices of June through August, which boasted an aggressive 8 or 9, September offers a gentle reprieve while still urging vigilance under the sun. As the days grow shorter and cooler, residents and visitors alike can enjoy the crisp autumn air while remembering to protect their skin. For detailed daily UV trends, check out Nancy UV Index.

Maximum UV Index Levels in Nancy for September

The chart shows the monthly maximum UV Index (UVI) for Nancy 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.
JanFebMarAprMayJunJulAugSepOctNovDec234689886421
Data source: Nancy 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 Nancy

September in Nancy, France, offers a delightful transition into autumn with 317 hours of sunshine, maintaining a beautiful brightness that lingers from the vibrant summer months. As the peak of summer fades, September still showcases a generous amount of sunshine, comfortably surpassing both October’s 249 hours and the colder months ahead. This trend highlights a gradual decline from the sun-drenched apex of July, which boasted 413 hours. The steady decrease during the months leading up to September suggests an inviting warmth, making it an ideal time for leisurely strolls through the city’s stunning parks, before autumn fully sets in.

Monthly Sunshine Duration in Nancy: September Highlighted

The September sunshine duration represents the total number of hours Nancy 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.
JanFebMarAprMayJunJulAugSepOctNovDec118h205h266h344h385h407h413h387h317h249h183h129h
Data source: Nancy September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Nancy During September

In September, Nancy, France, witnesses an encouraging 44% chance of sunny weather, marking a notable rise from the summer months, where sunshine probabilities fluctuate in the low thirties. This increase suggests that as summer gives way to autumn, the city still enjoys a fair amount of sunshine, making it an ideal time for outdoor activities and exploration. Interestingly, while the sun begins to retreat in the months ahead, September stands out as a golden opportunity for residents and visitors alike to soak up the late summer warmth before the autumn chill sets in.

Percentage of Sunny Days in September in Nancy

The chart illustrates the percentage of sunny days in Nancy 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 Nancy experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec15%36%46%54%36%34%38%32%44%35%20%19%
Data source: Nancy September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Nancy in September

As summer gives way to autumn in Nancy, France, September marks a transitional shift in daylight. With an average of 12 hours of daylight, the month offers a gentle decrease from the sun-drenched 16 hours of June and 15 hours in July. This gradual reduction sets the stage for the changing seasons, as the days start to shorten significantly towards the upcoming months. While September retains a beautiful balance of light, it hints at the cozy, introspective evenings that October will soon bring, where daylight dips to 10 hours. Thus, September serves as a bridge, allowing residents to savor the last glimpses of summer before autumn fully unfolds.

Average Daylight Hours in Nancy for September

The chart illustrates the variation in daylight duration in Nancy throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 46m10h 10m11h 55m13h 43m15h 16m16h 3m15h 38m14h 15m12h 32m10h 45m9h 10m8h 19m
Data source: Nancy daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Nancy

As summer transitions to autumn in Nancy, France, September greets residents with a gentle breeze, averaging just 2.6 m/s (6 mph), marking it as one of the calmest months of the year. This decrease in wind speed contrasts with the more lively gusts of spring and early summer, where averages surpassed 4 m/s (9 mph). The stillness of September winds beautifully complements the rich tapestry of seasonal change, inviting leisurely strolls through the city’s historic streets. As the chill from October approaches, one can anticipate a gradual increase in wind speed, hinting at the impending crispness of fall. Each breeze carries with it not just air, but the promise of new beginnings, inviting residents to embrace the serene charm of early autumn in Nancy.

Average September Wind Speed in Nancy

The chart displays monthly wind speed patterns in Nancy, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.24.23.63.44.42.73.03.12.6 m/s3.63.13.9
Data source: Nancy September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Nancy Compares to Other Months

The weather in Nancy 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 Nancy and find detailed weather information for every month.

September weather features a broader temperature range with minimums around 4°C (39°F) and maximums peaking at 33°C (92°F), making it generally warmer with an average of 16°C (61°F). The month sees about 61 mm (2.4 in) of precipitation over approximately 9 days, along with a relatively high humidity of 83%. In contrast, January presents much colder conditions, with temperatures averaging around 3°C (37°F) and reaching a maximum of just 13°C (56°F), while dropping as low as -10°C (15°F). This month experiences higher precipitation at 82 mm (3.2 in) over about 12 days, alongside a slightly elevated humidity level of 91%. For a more detailed view on January conditions, you can check Nancy weather in January.

September and February present contrasting weather conditions. In September, temperatures range from a mild 4°C (39°F) at night to a warm 33°C (92°F) during the day, with an average of 16°C (61°F). The month sees about 61 mm (2.4 in) of rainfall over 9 days, accompanied by relatively high humidity at 83%. In contrast, February experiences much cooler temperatures, with nighttime lows plunging to -10°C (14°F) and daytime highs reaching only 20°C (68°F), resulting in an average temperature of 5°C (41°F). This month also receives a bit more precipitation, totaling 77 mm (3.0 in) across 12 days, and the humidity rises to 90%. For more detailed information about February weather, you can visit Nancy weather in February.

In comparing the weather of September and March, notable differences emerge in temperature and precipitation. September boasts a wider temperature range with minimums of 4°C (39°F) and maximums reaching up to 33°C (92°F), while March experiences a chillier minimum of -11°C (12°F) and peaks at 23°C (74°F). Additionally, September has an average temperature of 16°C (61°F) compared to March's 7°C (45°F), making it generally warmer. Precipitation levels are slightly higher in March, totaling 77 mm (3.0 in) over 13 days, compared to September's 61 mm (2.4 in) spread over 9 days. The humidity remains relatively high in both months, with March slightly wetter at 88% compared to September's 83%. For more insights into March weather specifics, check out Nancy weather in March.

In comparing the weather of September and April, September tends to be warmer with average temperatures reaching up to 16°C (61°F) and highs soaring to 33°C (92°F). In contrast, April's temperatures are generally cooler, with an average of 10°C (51°F) and maximums of 27°C (80°F). Precipitation is slightly higher in September, with 61 mm (2.4 in) over 9 days, compared to April’s 43 mm (1.7 in) over 8 days. Both months experience high humidity levels, with September at 83% and April at 84%. For more information, you can check out Nancy weather in April.

September and May present distinct weather profiles characterized by their temperature ranges and precipitation levels. In September, temperatures fluctuate from a minimum of 4°C (39°F) to a maximum of 33°C (92°F), with an average of 16°C (61°F). The month sees about 61 mm (2.4 in) of rain over 9 days, alongside a humidity level of 83%. Comparatively, May tends to be slightly cooler, with temperatures ranging from 0°C (33°F) to a high of 32°C (91°F) and an average of 14°C (57°F). It experiences more rainfall at 76 mm (3.0 in) over 11 days, and slightly lower humidity at 81%. For a deeper insight into the weather patterns, you can check Nancy weather in May.

September typically offers a wider range of temperatures compared to June, with minimums dipping to around 4°C (39°F) and maximums reaching up to 33°C (92°F). In contrast, June starts slightly warmer, with minimum temperatures at 7°C (45°F) and maximums soaring to 37°C (99°F). While both months experience considerable humidity—September at 83% and June at 82%—June tends to see slightly more precipitation, averaging 74 mm (2.9 in) over 12 days, compared to September's 61 mm (2.4 in) over 9 days. For more detailed insights into June's climate, you can check Nancy weather in June.

In September, temperatures range from a cool minimum of 4°C (39°F) to a warm maximum of 33°C (92°F), with an average around 16°C (61°F). This month experiences 61 mm (2.4 in) of precipitation over 9 days, coupled with a humidity level of 83%. In contrast, July tends to be warmer, with minimum temperatures of 8°C (46°F) and maximums reaching up to 40°C (104°F), along with an average of 21°C (69°F). Similar to September, July also sees 60 mm (2.4 in) of rainfall over 9 days, but with slightly lower humidity at 82%. For further details on July weather, you can visit Nancy weather in July.

September typically sees cooler temperatures compared to August, with minimums dropping from 7°C (45°F) in August to 4°C (39°F) in September while the average temperature decreases from 20°C (69°F) to 16°C (61°F). Additionally, September experiences a wider temperature range, with a maximum of 33°C (92°F) compared to August's peak of 37°C (100°F). The precipitation in September totals 61 mm (2.4 in) over 9 days, slightly higher than August's 45 mm (1.8 in) spread over 11 days, although the humidity remains relatively consistent, at 83% in September versus 80% in August. For a closer look at the weather in August, you can visit Nancy weather in August.

September typically offers a wider range of temperatures, with daytime highs peaking at 33°C (92°F) and a comfortable average of 16°C (61°F). However, as the month transitions into October, the weather cools significantly, with maximum temperatures reaching only 26°C (79°F) and an average of 12°C (53°F). Additionally, October experiences slightly higher precipitation at 67 mm (2.6 in) over 12 days, compared to September's 61 mm (2.4 in) over 9 days. Humidity also increases, rising from 83% in September to 89% in October, further enhancing the cooler, more damp conditions of fall. For more detailed insights, check out Nancy weather in October.

September and November exhibit distinct weather patterns. In September, temperatures typically range from a minimum of 4°C (39°F) to a maximum of 33°C (92°F), with an average of 16°C (61°F). The month experiences about 61 mm (2.4 in) of precipitation over approximately 9 days, accompanied by relatively high humidity at 83%. In contrast, November's weather is considerably cooler, with temperatures dropping to a minimum of -3°C (27°F) and an average of 6°C (43°F), peaking at 21°C (69°F). Precipitation increases slightly to 75 mm (3.0 in) spread over 13 days, along with higher humidity levels at 91%. For a detailed look at the weather in November, visit Nancy weather in November.

In September, the weather is significantly warmer, characterized by a minimum temperature of 4°C (39°F) and an average temperature of 16°C (61°F), reaching a maximum of 33°C (92°F). With 61 mm (2.4 in) of precipitation over 9 days, the humidity remains relatively high at 83%. In contrast, December sees a dramatic drop in temperatures, with a minimum of -5°C (22°F) and an average temperature of just 4°C (40°F), peaking at 14°C (58°F). The month is much wetter, with 116 mm (4.6 in) of rain across 18 days, and humidity rises to 93%. For a detailed look at what to expect, visit Nancy weather in December.

Compare Nancy's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Nancy

As the summer warmth begins to wane, September in Nancy presents a delightful transition marked by crisp, refreshing air. This month contrasts sharply with the humid heat of July and August, offering a more temperate experience with average temperatures hovering around a comfortable 16°C (61°F). Though occasional rain is expected, with around 61 mm falling over about 9 days, the city's lush surroundings thrive in this mix of sunshine and moisture. Notably, the humidity level, peaking at 83%, provides a unique atmospheric quality that can be particularly invigorating, making September a perfect month for exploring all that Nancy has to offer. For more detailed insights into the city's climatic patterns, visit Nancy Climate.