September Weather in Obernai, France

Last updated: February 26, 2025

In Obernai, France, September ushers in a delightful transition from summer to autumn, featuring maximum temperatures reaching up to 32°C (90°F) and an average of 16°C (61°F). As the month progresses, cooler nights bring temperatures down to a minimum of 3°C (37°F), creating a perfect climate for enjoying fall activities. With 56 mm (2.2 in) of rainfall spread over 10 days, the air holds a substantial humidity level of 83%, enhancing the region's lush landscapes. This dynamic weather pattern offers a vibrant experience for visitors and locals alike, with the charming town of Obernai showcasing its picturesque beauty under a diverse sky.

September Temperature in Obernai

In September, Obernai, France begins to transition into the cooler autumn months, showcasing a delightful range of temperatures. With minimums dipping to 3°C (37°F) and averages at a pleasant 16°C (61°F), the weather is crisp yet inviting. The maximums can still reach a warm 32°C (90°F), hinting at the tail end of summer's embrace. This month illustrates a gradual decline from the intense heat of July and August, while still allowing for those charming sunny days perfect for exploring the scenic Alsace region. As the foliage starts to change, September offers a beautiful backdrop for outdoor activities, blending the warmth of summer with the fresh air of autumn.

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

The chart illustrates September temperature patterns in Obernai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec364045515867706961534339
Data source: Temperature data for Obernai 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 Obernai

In Obernai, France, September ushers in a more temperate climate, characterized by a notable decrease in precipitation compared to the summer months. With 56 mm (2.2 in) of rain spread over 10 days, September marks a transition to drier weather, following August’s higher total of 97 mm (3.8 in). This decline reflects a trend of diminishing rainfall as autumn approaches, evident in the subtle shift from the wettest summer months to the relatively calmer September. As the year progresses, precipitation levels will rise again in the subsequent months, but September offers a brief reprieve, making it an ideal time to enjoy the lush landscapes left behind by the summer rains.

September Precipitation Trends in Obernai

The chart displays monthly precipitation patterns in Obernai, 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.
JanFebMarAprMayJunJulAugSepOctNovDec8277814594939297567867112
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Obernai

In Obernai, France, September marks a subtle transition in humidity levels, with an average of 83% that reflects the waning summer warmth. The trend from late spring to early autumn shows a gradual decline in humidity, peaking at 91% in January and steadily decreasing to 80% in August. This slight uptick in September serves as a reminder of the lingering summer influence before the wetter months of autumn set in. Notably, October's humidity rises again to 89%, hinting at the seasonal return to the higher moisture levels characteristic of winter. Overall, the seasonal humidity pattern underscores the region's shift from the warmth of summer to the chill of fall, making September a delightful yet humid month for locals and visitors alike.

September Average Humidity in Obernai

This chart illustrates the average monthly humidity levels in Obernai, 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 Obernai

As summer transitions to autumn in Obernai, France, the September UV Index sees a shift, settling at 6, which indicates a high exposure category. This is a notable decline from the peak values of 9 observed in the preceding months of June and July, where sun protection became essential in just 15 minutes. In September, individuals can enjoy up to 25 minutes of safe sun exposure before risking skin damage. This decrease in the UV Index reflects the cooler days of fall, yet vigilance is still warranted, especially during midday hours. For those planning outdoor activities, it's a reminder to stay informed about UV levels by checking the Obernai UV Index regularly.

Maximum UV Index Levels in Obernai for September

The chart shows the monthly maximum UV Index (UVI) for Obernai 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.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Obernai 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 Obernai

September in Obernai, France, offers a delightful transition from the bustling summer months to the crispness of autumn, showcasing 323 hours of sunshine. This amount, while slightly lower than the summer peak in July, still reflects a vibrant array of warm, sunny days that invite exploration of the picturesque town and its surrounding vineyards. The trend of increasing daylight hours reaches a crescendo in July, after which there is a gradual decline, yet September retains a substantial share, promising plenty of opportunities for outdoor activities. As the sunshine begins to wane towards October, Obernai’s charming streets and quaint shops become ideal for leisurely strolls under the golden light, making September a particularly enchanting month in this enchanting region.

Monthly Sunshine Duration in Obernai: September Highlighted

The September sunshine duration represents the total number of hours Obernai 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.
JanFebMarAprMayJunJulAugSepOctNovDec129h207h280h351h381h399h411h382h323h261h183h141h
Data source: Obernai September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Obernai During September

In Obernai, France, the likelihood of sunny weather during September stands at 46%, a promising figure that mirrors the upward trend seen from the earlier summer months. Following a dip in sunny days in June and July, September experiences a resurgence in sunshine compared to August's 34%. This notable increase not only makes September a delightful time to explore the picturesque landscapes and charming streets of Obernai, but also aligns with the gradual shift towards more stable weather patterns as autumn approaches. With a balance of mild temperatures and a fair chance of sunshine, September presents an ideal opportunity for outdoor activities and leisurely strolls through this enchanting region.

Percentage of Sunny Days in September in Obernai

The chart illustrates the percentage of sunny days in Obernai 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 Obernai experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec17%40%46%52%34%31%38%34%46%35%26%24%
Data source: Obernai September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Obernai in September

As summer wanes in Obernai, France, September presents a delightful transition in daylight duration, offering about 12 hours of sunlight each day. This marks a gentle decline from the sun-drenched days of June and July, where daylight peaked at an invigorating 16 hours, and a slight dip from the 14 hours enjoyed in August. The trend reflects an annual shift, moving from the prolonged brightness of the warmer months towards the shorter, cozy days of autumn. With each passing week, the rich colors of fall begin to emerge, echoing the steady decrease in daylight as the year progresses towards October's 10 hours.

Average Daylight Hours in Obernai for September

The chart illustrates the variation in daylight duration in Obernai throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 47m10h 11m11h 55m13h 43m15h 15m16h 3m15h 37m14h 15m12h 31m10h 45m9h 10m8h 20m
Data source: Obernai daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Obernai

September in Obernai, France, brings a gentle embrace of the season as the average wind speed dips to 2.0 m/s (4 mph), making it one of the calmest months of the year. This subtle decrease follows a summer marked by slightly breezier conditions, with July and August maintaining a consistent 2.2 m/s (5 mph). As the warmth from summer lingers, September's soft winds create a serene atmosphere, inviting leisurely strolls through the charming streets lined with historic architecture and vibrant vineyards. As autumn approaches, the transition to cooler weather is palpable, setting the stage for picturesque harvest scenes and the rich colors of fall.

Average September Wind Speed in Obernai

The chart displays monthly wind speed patterns in Obernai, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.12.82.72.83.31.92.22.22.0 m/s2.42.42.8
Data source: Obernai September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Obernai Compares to Other Months

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

September and January showcase striking differences in weather patterns. September enjoys a wider temperature range, with minimums around 3°C (37°F) and maximums reaching 32°C (90°F), making it generally warmer with an average of 16°C (61°F). However, this month sees relatively lower humidity at 83% and less precipitation, totaling 56 mm (2.2 in) over 10 days. In contrast, January brings much colder temperatures, with lows plunging to -9°C (15°F) and highs capping at 14°C (58°F), resulting in a much chillier average of 2°C (37°F). This winter month experiences higher precipitation levels at 82 mm (3.2 in) distributed over 12 days and an increase in humidity to 91%. You can find more detailed information about January weather Obernai weather in January.

September and February present strikingly different weather patterns. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 32°C (90°F), with an average of 16°C (61°F). This month experiences relatively moderate precipitation of 56 mm (2.2 in) over about 10 days, coupled with a humidity level of 83%. In contrast, February is much colder, with temperatures ranging from a minimum of -11°C (12°F) to a maximum of 20°C (68°F), averaging around 5°C (41°F). Precipitation is slightly higher at 77 mm (3.0 in) spread across 11 days, and humidity rises to 90%. For more details on February weather in Obernai, you can refer to Obernai weather in February.

In comparing the weather of September and March, September tends to be much warmer and more pleasant, with average temperatures around 16°C (61°F) and a maximum of 32°C (90°F), while March is decidedly cooler, with average temperatures at 7°C (45°F) and a minimum that can plunge to -11°C (12°F). Rainfall varies slightly, with September receiving 56 mm (2.2 in) over approximately 10 days, while March has a higher precipitation of 81 mm (3.2 in) over 14 days, contributing to a more humid environment at 88% compared to September's 83%. For a detailed look at March weather specifics, you can find more information here: Obernai weather in March.

September and April present distinct weather characteristics, reflecting the transition from summer to autumn and from winter to spring, respectively. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 32°C (90°F), with an average of 16°C (61°F). The month experiences more warmth, higher humidity at 83%, and a total precipitation of 56 mm (2.2 in) over about 10 days. Conversely, April sees cooler conditions, with temperatures dipping as low as -5°C (24°F) and peaking at 28°C (82°F), averaging 11°C (52°F). Preciptation is slightly lower at 45 mm (1.8 in) over 9 days, accompanied by a similar humidity level of 84%. This comparison highlights the variability in weather patterns between the two months. For more specific details on April weather, you can visit Obernai weather in April.

In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 32°C (90°F), with an average of 16°C (61°F). This month sees around 56 mm (2.2 in) of precipitation over approximately 10 days, and humidity is typically high at 83%. In contrast, May has slightly cooler temperatures, with a minimum of 2°C (35°F) and an average of 14°C (58°F), while still reaching similar maximums of 32°C (89°F). Precipitation in May is greater, totaling 94 mm (3.7 in) over about 15 days, with humidity at a marginally lower 81%. For more detailed insights, you can explore Obernai weather in May.

September typically offers a broader temperature range compared to June, with minimums dropping to around 3°C (37°F) and maximums reaching up to 32°C (90°F), averaging 16°C (61°F). In contrast, June is warmer overall, featuring minimums of 7°C (46°F), maximums of 35°C (95°F), and an average temperature of 20°C (67°F). Both months experience notable precipitation, with September receiving 56 mm (2.2 inches) over about 10 days, while June sees a higher total of 93 mm (3.6 inches) spread across 13 days. Humidity levels are quite similar, hovering around 83% in September and 82% in June. For more specific insights, you can check out Obernai weather in June.

When comparing the weather in September and July, notable differences emerge. September experiences a wider temperature range with minimums dropping to 3°C (37°F) and maximums reaching 32°C (90°F), while the average temperature sits at a comfortable 16°C (61°F). In contrast, July tends to be warmer overall, with minimum temperatures of 9°C (49°F), averages around 21°C (70°F), and peaks at a scorching 38°C (101°F). Precipitation is also higher in July, with 92 mm (3.6 in) over 13 days, compared to September's 56 mm (2.2 in) over 10 days, although both months have similar humidity levels hovering around 82-83%. For a more detailed overview of July weather, you can refer to this link: Obernai weather in July.

In comparing the weather of September to August, we see notable differences in temperature and precipitation. September experiences a wider temperature range, with minimums dropping to 3°C (37°F) and maximums reaching 32°C (90°F), allowing for mild days contrasted with cooler nights. In comparison, August has a more elevated average temperature of 20°C (69°F) and can see peaks as high as 37°C (99°F). Precipitation levels are also higher in August, with 97 mm (3.8 in) over 15 days, compared to September's 56 mm (2.2 in) over 10 days, indicating that August is not only warmer but also wetter. The humidity remains fairly high in both months, though slightly higher in September at 83%. For those interested in a deeper dive into August's weather patterns, you can explore Obernai weather in August.

In September, the weather is comparatively warmer, with temperatures ranging from a minimum of 3°C (37°F) to a maximum of 32°C (90°F) and an average temperature of 16°C (61°F). The month experiences 56 mm (2.2 in) of precipitation over 10 days, accompanied by moderate humidity at 83%. In contrast, October brings cooler temperatures, where the minimum dips to 1°C (33°F) and the maximum reaches 26°C (79°F), resulting in an average of 12°C (53°F). This month sees slightly more rainfall, totaling 78 mm (3.1 in) across 13 days, and humidity increases to 89%. For more detailed weather insights, you can check Obernai weather in October.

In September, the weather tends to be warmer, with temperatures ranging from a minimum of 3°C (37°F) to a maximum of 32°C (90°F), resulting in an average of 16°C (61°F). The month experiences relatively moderate precipitation of 56 mm (2.2 in) spread over 10 days, and the humidity levels hover around 83%.

In contrast, November brings cooler temperatures, with a minimum of -2°C (28°F) and a maximum of 21°C (71°F), averaging only 6°C (43°F). The precipitation slightly increases to 67 mm (2.6 in) over 11 days, accompanied by higher humidity levels at 91%. For more detailed information, you can check out Obernai weather in November.

September and December present a striking contrast in weather conditions. In September, temperatures range from a cool 3°C (37°F) at night to a warm 32°C (90°F) during the day, with an average of 16°C (61°F). This month typically sees less precipitation, averaging 56 mm (2.2 in) over about 10 days and a humidity level of 83%. In contrast, December's weather becomes significantly colder, with temperatures dropping to a minimum of -5°C (23°F) and averaging just 4°C (40°F), peaking at 15°C (59°F). The month experiences higher rainfall, accumulating 112 mm (4.4 in) over 17 days, along with increased humidity at 93%. For more specific details about the weather in December, check out Obernai weather in December.

Compare Obernai's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Obernai

As September arrives in Obernai, the weather begins to transition from the warmth of summer to the more temperate embrace of autumn. With a maximum temperature that still flirts with the 30s°C, the month offers pleasant days, yet cool nights remind us of the changing season. This month also sees a notable increase in humidity, averaging around 83%, and a moderate amount of rainfall spread over about ten days, contributing to the region's lush landscapes. The blend of mild temperatures and refreshing breezes makes September a unique and inviting time to explore Obernai, especially when compared to the peak heat of the summer months. For more detailed insights into the region's weather patterns, visit Obernai Climate.