September Weather in Le Croisic, France

Last updated: February 26, 2025

In September, Le Croisic, France, offers a delightful transition into autumn with pleasant temperatures. The maximum reaches a warm 27°C (81°F), while the average settles around a comfortable 17°C (64°F), dipping to a refreshing minimum of 11°C (51°F) at night. Although the month sees approximately 37 mm (1.5 in) of rainfall spread over 8 days, this slight precipitation contributes to the region's lush scenery. With a humidity level of 79%, visitors can expect a mild and inviting atmosphere, making September an ideal time to explore this charming coastal town.

September Temperature in Le Croisic

In September, Le Croisic enjoys a delightful transition toward autumn, marked by pleasantly mild temperatures. The minimum temperature hovers at around 11°C (51°F), while the average reaches a comfortable 17°C (64°F), peaking at a lovely 27°C (81°F). This marks a notable decrease from the sizzling summer months, yet it remains warm enough for outdoor activities and seaside strolls. As the month progresses, you can feel the hints of fall beginning to set in, with crisp mornings and balmy afternoons, making September an ideal time for exploration and enjoying the stunning coastal scenery of this charming French town.

September Weather in Le Croisic: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Le Croisic, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec464750535864676663585249
Data source: Temperature data for Le Croisic 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 Le Croisic

In September, Le Croisic experiences a notable transition as summer wanes, characterized by a gentle reduction in precipitation. With only 37 mm (1.5 in) of rain accumulating over 8 days, the month marks one of the drier periods of the year. This trend follows a series of relatively moist months, where August recorded 48 mm, and is a sharp contrast to the wetter autumn months that follow, with October and November averaging 86 mm (3.4 in) and 84 mm (3.3 in), respectively. As the days grow shorter and cooler, September's mild rain offers a soft farewell to summer, setting the stage for the more significant precipitation that characterizes the fall season in this charming coastal locale.

September Precipitation Trends in Le Croisic

The chart displays monthly precipitation patterns in Le Croisic, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5371654355634148378684119
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Le Croisic

In September, Le Croisic experiences a noticeable shift in humidity as it transitions from the warmer summer months. With humidity levels averaging 79%, September is one of the driest months of the year, following the peak of 78% in August. This slight decrease can be attributed to the cooling temperatures as autumn approaches. Throughout the year, humidity levels remain relatively steady, fluctuating between 77% in July and 83% in February, maintaining a general average that reflects the coastal climate's maritime influences. Thus, September serves as a gentle bridge to the increased humidity that returns in October, establishing a pattern of seasonal rhythm that characterizes Le Croisic's unique atmosphere.

September Average Humidity in Le Croisic

This chart illustrates the average monthly humidity levels in Le Croisic, 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.
JanFebMarAprMayJunJulAugSepOctNovDec82%83%81%82%82%80%77%78%79%82%81%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Le Croisic

As September arrives in Le Croisic, France, the UV Index settles at a moderate level of 6, moving from the very high values seen in the summer months. This shift indicates a change in the intensity of sun exposure, with recommended burn time extending to 25 minutes. Although the risk is lower compared to the peak summer, caution is still advised, especially for those with sensitive skin. The transition from the scorching August days to more moderate conditions suggests a gradual cooling off, yet the sun's rays can still be potent. Embrace the outdoors wisely and stay informed about daily UV variations by checking out the Le Croisic UV Index.

Maximum UV Index Levels in Le Croisic for September

The chart shows the monthly maximum UV Index (UVI) for Le Croisic 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.
JanFebMarAprMayJunJulAugSepOctNovDec235689986522
Data source: Le Croisic 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 Le Croisic

As summer gracefully transitions into fall, September in Le Croisic continues to bask in a generous 337 hours of sunshine, making it a delightful month for outdoor exploration. This sunny interlude follows the peak of summer, where July reigns supreme with an impressive 428 hours. The gradual decline in sunshine from August to September is a reminder of the seasonal shift, yet it still presents a wealth of bright days perfect for enjoying the coastal charm of this picturesque town. Overall, the data reveals a clear upward trend from the winter months, culminating in a vibrant summer, before gently tapering into the crispness of autumn. Visitors in September can relish in the lingering warmth while experiencing Le Croisic's serene beauty and captivating ambiance before the days grow shorter.

Monthly Sunshine Duration in Le Croisic: September Highlighted

The September sunshine duration represents the total number of hours Le Croisic 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.
JanFebMarAprMayJunJulAugSepOctNovDec149h216h305h359h408h415h428h403h337h283h235h196h
Data source: Le Croisic September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Le Croisic During September

September in Le Croisic, France, brings a delightful shift towards sunnier days, with a 52% chance of sunshine that is a notable uptick from the summer months. After experiencing the warmer July and August, which offered 48% and 51% chances of sun respectively, September stands out as a pleasant prelude to autumn. This period marks a transition away from the peak summer sun, but it retains a favorable likelihood of clear skies compared to earlier months in the year. As autumn approaches, the sunny prospects begin to decline, making September an ideal time for outdoor activities before the cooler, cloudier days of October settle in. Overall, it represents a sweet spot for enjoying the last glimpses of summer warmth in this charming coastal town.

Percentage of Sunny Days in September in Le Croisic

The chart illustrates the percentage of sunny days in Le Croisic 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 Le Croisic experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec22%28%48%59%40%46%48%51%52%46%44%29%
Data source: Le Croisic September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Le Croisic in September

As September arrives in Le Croisic, France, the daylight begins to wane, marking a transition from the sun-soaked months of summer to the gentle embrace of autumn. With approximately 12 hours of daylight, September sees a gradual decline from the 15 hours enjoyed in the peak of summer. This month serves as a beautiful balance, offering bright days while hinting at the shorter daylight hours that are to come. Following the vibrant energy of May through August, the light starts to recede, setting a picturesque scene as the leaves begin to turn and preparations for the cozy months ahead take shape.

Average Daylight Hours in Le Croisic for September

The chart illustrates the variation in daylight duration in Le Croisic throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 56m10h 16m11h 56m13h 38m15h 6m15h 51m15h 27m14h 9m12h 30m10h 48m9h 18m8h 31m
Data source: Le Croisic daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Le Croisic

In September, the breezes of Le Croisic, France, reach an average wind speed of 4.6 m/s (10 mph), marking a gentle transition from the bustling winds of summer. As the summer months draw to a close, we see a noticeable decline from the peaks in May and February, both averaging 6.4 m/s (14 mph). Meanwhile, September's winds hint at the approach of autumn, with the calmer air reflecting a shift in the season's rhythm. This trend of decreasing wind speeds continues into October, where the winds pick up slightly again to 5.3 m/s (12 mph), suggesting the whimsical dance of the seasons as they blend into one another, offering a unique experience for those visiting the picturesque coastline.

Average September Wind Speed in Le Croisic

The chart displays monthly wind speed patterns in Le Croisic, 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.
JanFebMarAprMayJunJulAugSepOctNovDec6.16.45.35.26.44.05.45.14.6 m/s5.35.06.6
Data source: Le Croisic September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Le Croisic Compares to Other Months

The weather in Le Croisic 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 Le Croisic and find detailed weather information for every month.

September and January present stark contrasts in weather conditions. In September, temperatures are milder, ranging from a minimum of 11°C (51°F) to a maximum of 27°C (81°F), with an average of 17°C (64°F). The month experiences moderate precipitation of 37 mm (1.5 in) over 8 days, accompanied by a humidity level of 79%. In comparison, January brings much colder weather, with temperatures dropping to a minimum of -2°C (28°F) and peaking at 14°C (57°F), yielding an average of only 8°C (46°F). This month sees slightly higher precipitation at 53 mm (2.1 in) over 11 days and a marginally higher humidity of 82%. For more detailed information about January weather, you can check Le Croisic weather in January.

September and February present distinctly different weather patterns. In September, temperatures range from a mild 11°C (51°F) at night to a comfortable 27°C (81°F) during the day, with an average of 17°C (64°F). The month receives about 37 mm (1.5 in) of precipitation over roughly 8 days and maintains a humidity level of 79%. In contrast, February is much cooler, with temperatures dipping as low as -3°C (27°F) at night and peaking at 15°C (58°F), averaging around 9°C (48°F). This winter month sees higher precipitation levels of 71 mm (2.8 in) over about 12 days and a slightly higher humidity of 83%. For a deeper look at the weather specifics, you can visit Le Croisic weather in February.

When comparing the weather in September and March, there are notable differences. September boasts milder temperatures, with a minimum of 11°C (51°F) and an average of 17°C (64°F), reaching a maximum of 27°C (81°F). In contrast, March experiences much cooler conditions, with temperatures dipping to a minimum of -4°C (25°F), an average of 10°C (50°F), and a maximum of 17°C (63°F). Precipitation levels are also higher in March, totaling 65 mm (2.6 in) over 13 days, compared to September's 37 mm (1.5 in) over just 8 days. Despite the slight increase in humidity, which sits at 81% in March compared to 79% in September, the overall weather experience is quite different. For more details, check out Le Croisic weather in March.

When comparing the weather in September and April, notable differences emerge in both temperature and precipitation. September tends to be milder, with average temperatures ranging from a minimum of 11°C (51°F) to a maximum of 27°C (81°F), while April experiences cooler conditions, with a minimum of 3°C (38°F) and a maximum of 22°C (72°F). In terms of precipitation, April sees slightly higher rainfall, accumulating 43 mm (1.7 in), compared to September's 37 mm (1.5 in). Both months share a similar number of rainy days at eight, though April's humidity is marginally higher at 82% versus September's 79%. For more details about April weather, you can visit Le Croisic weather in April.

When comparing the weather in September to that in May, September generally enjoys slightly warmer temperatures, with averages around 17°C (64°F) compared to May's 14°C (58°F). September experiences a maximum temperature of 27°C (81°F) but has less total rainfall at 37 mm (1.5 in) over 8 days, while May sees more precipitation at 55 mm (2.2 in) over 11 days. Humidity levels are comparable, with September at 79% and May slightly higher at 82%. For a detailed look at what to expect in May, you can check out Le Croisic weather in May.

In comparing the weather between September and June, we can see notable differences in temperature and precipitation. September tends to be slightly warmer, with average highs reaching 27°C (81°F) compared to June's 29°C (84°F), but both months experience similar minimum temperatures around 11°C (51°F to 52°F). June is wetter, receiving 63 mm (2.5 in) of precipitation over 11 days, while September has less rain at 37 mm (1.5 in) over 8 days. Humidity levels are relatively consistent, with September at 79% and June at 80%. For a detailed look at June weather, you can visit Le Croisic weather in June.

When comparing the weather in September and July, we see some notable differences. September generally experiences a slightly cooler climate, with average temperatures ranging from a minimum of 11°C (51°F) to a maximum of 27°C (81°F) and an average of 17°C (64°F). In contrast, July is a bit warmer, with temperatures ranging from a minimum of 13°C (56°F) to a maximum of 28°C (83°F) and an average of 19°C (67°F). Precipitation levels are fairly similar, with September receiving 37 mm (1.5 in) over 8 days and July slightly higher with 41 mm (1.6 in) over 7 days. Humidity is slightly higher in September at 79% compared to 77% in July. For a detailed overview of July weather, you can visit Le Croisic weather in July.

In comparing the weather between September and August, September experiences slightly cooler temperatures, with a minimum of 11°C (51°F) and an average of 17°C (64°F), compared to August's minimum of 13°C (56°F) and average of 19°C (66°F). The maximum temperature in September reaches 27°C (81°F), just a degree lower than August's peak of 28°C (83°F). Additionally, September sees a reduction in precipitation, with 37 mm (1.5 in) over 8 days, compared to 48 mm (1.9 in) during the same number of days in August. Humidity levels are quite similar, resting at 79% in September and 78% in August. For more details on August weather, you can check out Le Croisic weather in August.

In September, temperatures range from a mild 11°C (51°F) at night to a warm 27°C (81°F) during the day, with an average of 17°C (64°F). The month sees relatively low precipitation, totaling 37 mm (1.5 in) across 8 days, accompanied by a humidity level of 79%. Conversely, October brings a noticeable drop in temperatures, with minimums of 6°C (43°F) and a maximum of 20°C (69°F), averaging 15°C (59°F). This month also experiences increased rainfall of 86 mm (3.4 in) over 11 days, along with slightly higher humidity at 82%. These weather shifts create a distinct transition from the warmth of autumn to the cooler, wetter conditions typical of late fall. For more specific details about October's weather, you can check Le Croisic weather in October.

In September, the weather is warmer, with temperatures ranging from a minimum of 11°C (51°F) to a maximum of 27°C (81°F), and an average of 17°C (64°F). The month sees relatively low precipitation, with 37 mm (1.5 in) over 8 rainy days and a humidity level of 79%. In contrast, November brings cooler temperatures, with a minimum of 3°C (38°F) and a maximum of 17°C (64°F), averaging just 11°C (52°F). Precipitation increases significantly to 84 mm (3.3 in) over 11 days, while humidity remains fairly high at 81%. For a more detailed look at November weather, you can check Le Croisic weather in November.

September weather is generally milder and more pleasant, with an average temperature of 17°C (64°F) and a maximum of 27°C (81°F). In contrast, December brings much cooler temperatures, averaging just 10°C (49°F), with highs only reaching 14°C (58°F). Additionally, September experiences less precipitation at 37 mm (1.5 in) over about 8 days, while December sees a significant increase in rainfall, totaling 119 mm (4.7 in) across 16 days. Humidity remains fairly consistent, with September at 79% and December slightly higher at 82%. For more detailed information, you can check Le Croisic weather in December.

Compare Le Croisic's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Le Croisic

As summer gracefully transitions into autumn, September in Le Croisic offers a delightful blend of mild temperatures and refreshing humidity. With average highs reaching a pleasant 17°C, days are warm enough to enjoy outdoor activities without the scorching heat of July and August. While the occasional rain may grace the month, the overall precipitation remains modest, allowing visitors to bask in the charming coastal scenery. This month stands out as a time when the vibrant hues of nature begin to shift, creating a picturesque backdrop for exploration. To learn more about what to expect throughout the seasons, visit Le Croisic Climate.