September Weather in Gruissan, France

Last updated: February 26, 2025

In September, Gruissan, France, showcases a delightful climate with maximum temperatures soaring to 33°C (92°F), while the average comfortably settles at 21°C (71°F). The region experiences a refreshing touch with minimum temperatures dipping to 10°C (50°F). Although this picturesque locale sees about 53 mm (2.1 in) of precipitation spread over 7 days, the overall humidity remains around 70%, contributing to a pleasant atmosphere ideal for exploring the stunning coastal landscapes and vibrant local culture.

September Temperature in Gruissan

In September, Gruissan transitions into a delightful climate as the summer's heat starts to wane. With minimum temperatures averaging around 10°C (50°F) and maximums reaching up to 33°C (92°F), days remain comfortably warm while evenings take on a crispness that hints at the approaching fall. The average temperature of 21°C (71°F) presents a perfect balance for enjoying outdoor activities or leisurely strolls along the beach. As the month unfolds, you can expect a gradual cooling trend, moving from the sweltering peaks of August, while still basking in plenty of sunshine. It's a beautiful time to experience the enchanting allure of Gruissan before the cooler October weather sets in.

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

The chart illustrates September temperature patterns in Gruissan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec465053586573787771635449
Data source: Temperature data for Gruissan 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 Gruissan

In September, Gruissan experiences a moderate precipitation total of 53 mm (2.1 in), mirroring the rainfall levels of May and notably higher than the drier summer months of July and August, which both recorded just 26 mm (1.0 in). This month witnesses precipitation on an average of 7 days, suggesting a shift towards wetter weather as the season transitions to autumn. As the year progresses, the trend reveals an upward trajectory in rainfall, with October typically seeing a significant increase to 90 mm (3.6 in). This transition not only marks a return to more regular rainfall but also signals the impending lushness that autumn brings to the region.

September Precipitation Trends in Gruissan

The chart displays monthly precipitation patterns in Gruissan, 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.
JanFebMarAprMayJunJulAugSepOctNovDec544561695335262653906143
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Gruissan

In September, Gruissan, France, experiences a modest increase in humidity, with levels reaching 70%. This marks a subtle rise from the summer months, where humidity reaches its lowest point in August at 63%. September serves as a transitional month, hinting at the upcoming autumn as moisture levels begin to climb towards the wetter conditions typical of the later months, peaking at 84% in November. Overall, the trend showcases a gentle shift from drier summer air to the richer, more humid atmosphere characteristic of fall, creating a pleasant balance for both residents and visitors.

September Average Humidity in Gruissan

This chart illustrates the average monthly humidity levels in Gruissan, 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%77%73%73%71%67%66%63%70%80%84%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Gruissan

September in Gruissan, France, marks a transition from the intense summer sun to a more moderate climate. With a UV Index of 7, categorized as high, sun-seekers should be mindful, as the burn time is around 25 minutes. This trend reflects a slight dip from the peak summer months of July and August, where the UV Index soared to 10. However, compared to the earlier months of the year, September still demands caution, especially for those planning outdoor activities. As the days shorten and temperatures cool, it's a reminder to protect your skin while enjoying the beautiful early autumn. For more details, visit the Gruissan UV Index.

Maximum UV Index Levels in Gruissan for September

The chart shows the monthly maximum UV Index (UVI) for Gruissan 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.
JanFebMarAprMayJunJulAugSepOctNovDec24679101097532
Data source: Gruissan 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 Gruissan

September in Gruissan, France, beams with an impressive 342 hours of sunshine, marking a delightful transition as summer bids farewell. This month's sunlight captures the essence of the sunny season, yet it is accompanied by a gradual decline, hinting at the cooler days ahead. Following the peak of 430 hours in July, sunshine remains abundant but tapers off gently, illustrating a trend of diminishing daylight as autumn approaches. With the vibrant hues of early fall setting in, September blends warmth and charm, offering a perfect opportunity to bask in the last rays of summer before the days shorten further into October's 289 hours.

Monthly Sunshine Duration in Gruissan: September Highlighted

The September sunshine duration represents the total number of hours Gruissan 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.
JanFebMarAprMayJunJulAugSepOctNovDec184h243h315h340h392h411h430h399h342h289h242h226h
Data source: Gruissan September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Gruissan During September

In Gruissan, France, September marks a notable shift in weather patterns, as the likelihood of sunny days dips to 32%. This decrease follows a peak in August, when the chance of sunshine reaches a sunny 67%. As summer transitions into autumn, the trend reflects a gradual decline in sunshine probabilities, with only January and February seeing lower chances. While September retains a moderate number of sunny days compared to the chillier months ahead, it is clear that the vibrant warmth of summer is giving way to the cooler, cloudier days of fall. For those seeking lingering rays, earlier summer months may be more inviting, but September still offers a gentle close to the sunny season.

Percentage of Sunny Days in September in Gruissan

The chart illustrates the percentage of sunny days in Gruissan 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 Gruissan experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec37%27%52%50%40%50%57%67%32%52%44%46%
Data source: Gruissan September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Gruissan in September

As summer fades into autumn, September in Gruissan, France, offers a gentle transition in daylight duration, with around 12 hours of sunlight gracing the coastal town. This marks a slight dip from the sun-drenched days of July and August, where daylight peaks at 14 hours and 13 hours respectively. However, September still holds on to a generous amount of brightness, more than what will be experienced in the months ahead. As the year progresses, daylight gradually wanes, painting a picture of the changing seasons, with the promise of shorter days heralding the cozy embrace of fall. Enjoy the lingering warmth and light of September, as it signals the approach of the enchanting autumn months.

Average Daylight Hours in Gruissan for September

The chart illustrates the variation in daylight duration in Gruissan throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 23m10h 31m11h 57m13h 25m14h 39m15h 17m14h 57m13h 51m12h 26m10h 59m9h 42m9h 2m
Data source: Gruissan daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Gruissan

As summer fades in Gruissan, France, September brings a gentle sigh in the form of a soft breeze, with average wind speeds dipping to 3.6 m/s (8 mph). This marks a slight decline from the warmer months, where winds hovered around 4.5 m/s in July and held steady through August. The transition to autumn is evident in the air, as the refreshing gusts begin to whisper of the changing seasons. Compared to the earlier summer months, this more tranquil wind creates a serene atmosphere, perfect for leisurely strolls along the picturesque coast or enjoying the vibrant local scenery. As the winds begin to pick up again into October, one can appreciate September’s calm—a tranquil prelude to the more animated breezes that are yet to come.

Average September Wind Speed in Gruissan

The chart displays monthly wind speed patterns in Gruissan, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.34.34.74.04.44.44.53.73.6 m/s4.05.63.8
Data source: Gruissan September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Gruissan Compares to Other Months

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

In September, the weather is typically warm, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 33°C (92°F) and an average of 21°C (71°F). With 53 mm of precipitation over about 7 days, humidity levels sit at a comfortable 70%. In contrast, January brings a much colder climate, with temperatures dropping to a minimum of -4°C (25°F) and averaging only 8°C (47°F). The maximum temperature reaches 19°C (67°F), while precipitation remains similar at 54 mm over 6 days, but humidity is higher at 82%. For a more detailed look at January weather, you can check Gruissan weather in January.

In September, weather conditions are characterized by warmer temperatures, with a minimum of 10°C (50°F) and an average of 21°C (71°F), reaching up to a maximum of 33°C (92°F). The month experiences moderately high humidity at 70% and receives about 53 mm (2.1 in) of precipitation over approximately 7 days. In contrast, February presents a much cooler climate, with temperatures ranging from a minimum of -4°C (26°F) to an average of 10°C (51°F) and a maximum of 24°C (76°F). This month sees slightly less precipitation at 45 mm (1.8 in) over 5 days, along with higher humidity levels at 77%. For those curious about the specifics of the February weather in Gruissan, you can find more details here: Gruissan weather in February.

In comparing the weather between September and March, one can observe distinct seasonal differences. September boasts a warmer climate with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 33°C (92°F), presenting an average of 21°C (71°F). The month typically experiences 53 mm (2.1 in) of rainfall over about 7 days, coupled with a humidity level of 70%. In contrast, March features cooler temperatures, with a minimum of -2°C (29°F) and a maximum of 25°C (78°F), averaging 12°C (54°F). This month is slightly wetter, with 61 mm (2.4 in) of precipitation over 8 days, and an increased humidity of 73%. For a more detailed look, you can check out Gruissan weather in March.

When comparing September and April weather, a noticeable contrast emerges. September boasts higher average temperatures, ranging from a minimum of 10°C (50°F) to a maximum of 33°C (92°F), providing a warm atmosphere perfect for outdoor activities. In contrast, April has cooler temperatures, with a minimum of 2°C (37°F) and a maximum of 26°C (80°F). Precipitation levels are relatively similar, with September receiving 53 mm (2.1 in) over 7 days, while April has slightly more rainfall at 69 mm (2.7 in) over 8 days. Both months experience moderate humidity, but April's level at 73% is slightly higher than September's 70%. For more details on April weather, check out Gruissan weather in April.

When comparing the weather in September and May, we see some notable differences. September generally enjoys warmer temperatures, with a minimum of 10°C (50°F) and an average of 21°C (71°F), compared to May's cooler minimum of 7°C (44°F) and average of 18°C (65°F). Both months receive similar levels of precipitation, around 53 mm (2.1 in), but September typically has a higher maximum temperature of 33°C (92°F) compared to May's peak of 32°C (89°F). Humidity levels are quite close, with September at 70% and May slightly higher at 71%. For more detailed insights into the weather during May, you can visit Gruissan weather in May.

In comparing the weather between September and June, we observe notable differences in temperature and precipitation. September typically sees average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 33°C (92°F), while June offers slightly warmer conditions, with temperatures ranging from 11°C (52°F) to a peak of 38°C (101°F). Additionally, September experiences more precipitation, averaging 53 mm (2.1 in) over about 7 days, compared to June's 35 mm (1.4 in) over 6 days. Humidity levels are similar, with September at 70% and June slightly lower at 67%. For a more detailed look at June weather specifically, you can refer to Gruissan weather in June.

In September, temperatures range from a minimum of 10°C (50°F) to a maximum of 33°C (92°F), with an average temperature of 21°C (71°F). The month sees more rainfall, totaling 53 mm (2.1 in) over approximately 7 days, contributing to higher humidity levels at 70%. In contrast, July is warmer, with temperatures ranging from a minimum of 14°C (58°F) to a maximum of 36°C (96°F) and an average of 25°C (78°F). Rainfall in July is significantly lower at 26 mm (1.0 in) over 3 days, and the humidity is slightly less at 66%. For a more detailed look at July weather conditions, visit Gruissan weather in July.

In comparing the weather of September to August, we see a notable shift in both temperature and precipitation. September experiences cooler temperatures, with a minimum of 10°C (50°F) and an average of 21°C (71°F), whereas August has higher temperatures, ranging from a minimum of 15°C (59°F) to an average of 25°C (78°F). The maximum temperatures in August can reach a scorching 38°C (100°F), compared to September's peak of 33°C (92°F). Additionally, September brings more precipitation, totaling 53 mm (2.1 in) across 7 days, compared to August's lower 26 mm (1.0 in) over just 4 days. Humidity levels also differ, remaining higher in September at 70% compared to 63% in August. For more detailed insights, you can check Gruissan weather in August.

September and October exhibit noticeable differences in weather patterns. In September, temperatures are warmer with a minimum of 10°C (50°F) and an average high of 33°C (92°F), offering plenty of warm days ideal for outdoor activities. However, as October arrives, temperatures drop, with a minimum of 5°C (41°F) and an average high of 29°C (84°F), signaling the transition into cooler autumn weather. Precipitation also increases in October, reaching 90 mm (3.6 in) compared to September's 53 mm (2.1 in), and humidity rises slightly from 70% to 80%. For more details on October's climate, visit Gruissan weather in October.

In September, the weather is warm and comfortable, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 33°C (92°F) and an average of 21°C (71°F). The month sees relatively low precipitation at 53 mm (2.1 in) over about 7 days and a humidity level of 70%. In contrast, November brings a noticeable drop in temperatures, with a minimum of 1°C (35°F) and a maximum of 21°C (70°F), averaging just 12°C (54°F). The precipitation slightly increases to 61 mm (2.4 in) over 9 days, accompanied by higher humidity at 84%. For more detailed information, you can check Gruissan weather in November.

September and December present quite different weather experiences. In September, temperatures can soar to a maximum of 33°C (92°F) with an average around 21°C (71°F), making it a warm month typically characterized by mild conditions and moderate humidity at 70%. Precipitation is relatively low at 53 mm (2.1 in) over about 7 days. In contrast, December sees a significant drop in temperatures, with maxima reaching only 20°C (68°F) and averages around 9°C (49°F), while minimums can plunge to -1°C (31°F). Although slightly less rainfall occurs in December—43 mm (1.7 in)—the humidity increases to 83%, creating a noticeably cooler and more damp atmosphere. For more details on December weather, check out Gruissan weather in December.

Compare Gruissan's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Gruissan

As summer fades, September in Gruissan offers a delightful transition with a blend of warmth and refreshing breezes. The average temperature settles comfortably around 21°C (71°F), allowing for enjoyable outdoor activities, while the peak temperatures occasionally reach up to 33°C (92°F), perfect for beachgoers. However, expect a noticeable increase in humidity at 70%, along with occasional rain, delivering about 53 mm (2.1 in) over just 7 days. This unique mix of warmth and moisture distinguishes September from the sweltering summer months and the cooler autumn days that follow. For a more detailed look into what to expect throughout the year, explore Gruissan Climate.