September Weather in Aschaffenburg, Germany

Last updated: February 26, 2025

In September, Aschaffenburg experiences a delightful transition into autumn with temperatures ranging from a maximum of 31°C (88°F) to a minimum of 3°C (37°F). The average temperature hovers around 15°C (60°F), providing a comfortable backdrop for outdoor activities. While the month brings about 50 mm (2.0 in) of precipitation over 8 days, the humidity level remains high at 85%, lending a fresh crispness to the air. Visitors and locals alike can enjoy the vibrant hues of changing foliage while embracing the mild yet variable weather conditions characteristic of early fall.

September Temperature in Aschaffenburg

In September, Aschaffenburg experiences a significant transition in temperatures, signaling the onset of autumn. The minimum temperature hovers around 3°C (37°F), providing a crispness in the air, while the average temperature reaches a comfortable 15°C (60°F). As the month progresses, daytime warmth can soar to a maximum of 31°C (88°F), reminiscent of the lingering summer days. This upward blend of early autumn coolness with summer's reminiscence creates an inviting atmosphere, perfect for outdoor activities and enjoying the vibrant fall foliage. As the warmth of summer begins to fade, September serves as a gentle reminder of nature's changing palette, offering a delightful mix for residents and visitors alike.

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

The chart illustrates September temperature patterns in Aschaffenburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec353843505666676759524238
Data source: Temperature data for Aschaffenburg 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 Aschaffenburg

In September, Aschaffenburg experiences a notable dip in precipitation, receiving 50 mm (2.0 in) of rain over just 8 days. This marks a gradual decline from the heavier summer months, reflecting a shift towards the drier autumn season. Compared to the average rainfall in the previous months, September's totals are noticeably lower, indicating a transition from the lush greenery of summer towards the more subdued colors of fall. With a consistent pattern of diminishing rainfall, one can anticipate the region’s landscape to gradually prepare for the cooler months ahead.

September Precipitation Trends in Aschaffenburg

The chart displays monthly precipitation patterns in Aschaffenburg, 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.
JanFebMarAprMayJunJulAugSepOctNovDec7567884285877666506756116
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Aschaffenburg

In September, humidity levels in Aschaffenburg, Germany, rise to a comfortable 85%, marking a slight increase from the summer months. This trend reflects the gradual transition from the warmth of summer to the crispness of autumn. Throughout the year, humidity tends to be at its highest during the winter months, peaking at a notable 91% in January and December. However, as the seasons change, we observe a gentle decline from a summer high of 84% in August to the steady 85% in September. Following this, humidity levels begin to creep back up — hinting at the onset of cooler weather and a busy transition towards the moister months of late autumn. This rhythmic fluctuation encapsulates the charm of seasonal shifts in the region, offering a blend of freshness as September unfolds.

September Average Humidity in Aschaffenburg

This chart illustrates the average monthly humidity levels in Aschaffenburg, 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.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%83%79%82%83%84%86%88%89%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Aschaffenburg

In September, Aschaffenburg experiences a gradual decline in UV intensity, with a UV Index of 6, placing it in the high exposure category. As summer memories linger, sun safety remains paramount, as the skin’s burn time decreases to 25 minutes. This trend marks a shift from the peak UV levels of August, which boasted an Index of 7 and emphasized the importance of protective measures during outdoor activities. With autumn approaching, it’s vital to stay informed about changing UV trends. For more insights and details, check the Aschaffenburg UV Index.

Maximum UV Index Levels in Aschaffenburg for September

The chart shows the monthly maximum UV Index (UVI) for Aschaffenburg 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.
JanFebMarAprMayJunJulAugSepOctNovDec234588876421
Data source: Aschaffenburg 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 Aschaffenburg

As September settles in Aschaffenburg, Germany, the city basks in 317 hours of sunshine, showcasing a delightful continuation of summer's warmth. This month stands out as a transitional phase, offering a notable decrease from the sun-drenched heights of July with its impressive 411 hours. However, September still retains a vibrant glow, eclipsing the earlier months. Following a peak in June and July, the sunshine hours gradually turn downward, yet the warmth of early autumn prolongs the pleasant daylight, contrasting sharply with the impending months of October and November, which promise only 247 and 168 hours respectively. Overall, September strikes a beautiful balance, inviting residents and visitors alike to savor the lingering summer rays before the colder days settle in.

Monthly Sunshine Duration in Aschaffenburg: September Highlighted

The September sunshine duration represents the total number of hours Aschaffenburg 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.
JanFebMarAprMayJunJulAugSepOctNovDec103h202h266h344h380h389h411h380h317h247h168h121h
Data source: Aschaffenburg September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Aschaffenburg During September

Aschaffenburg, Germany, experiences a notable upswing in sunny weather as summer transitions into autumn. In September, the likelihood of sunshine peaks at 42%, which is a remarkable improvement compared to the preceding months like July and August, both lingering in the low thirties. This rise reflects a shift towards milder weather, making September a delightful time for outdoor activities. As the year progresses into the chillier months, the chances of sunny days start to decline again, dropping to 32% in October and further down to 16% in November. Thus, September stands out as a golden window of opportunity to embrace the sun before the darker days of winter arrive.

Percentage of Sunny Days in September in Aschaffenburg

The chart illustrates the percentage of sunny days in Aschaffenburg 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 Aschaffenburg experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec14%33%44%43%31%33%34%29%42%32%16%13%
Data source: Aschaffenburg September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Aschaffenburg in September

As the summer sun begins to wane, September in Aschaffenburg brings a gentle transition with 12 hours of daylight, a noticeable shift from the vibrant 16 hours experienced in June. This month marks the start of the gradual decrease that continues into autumn, following the peak brightness of the height of summer. While still offering a generous amount of sunlight, September's days are shorter than those of August, which enjoyed 14 hours. As we move towards October, the daylight hours will further dwindle, echoing the rhythm of the seasons as nature prepares for the quieter months ahead.

Average Daylight Hours in Aschaffenburg for September

The chart illustrates the variation in daylight duration in Aschaffenburg throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 36m10h 5m11h 55m13h 48m15h 26m16h 16m15h 49m14h 22m12h 33m10h 41m9h 1m8h 8m
Data source: Aschaffenburg daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Aschaffenburg

As September arrives in Aschaffenburg, Germany, the average wind speed takes a gentle dip to 2.1 m/s (5 mph), reflecting a transition into the calmer embrace of autumn. This trend marks the lowest wind speed recorded for the month, following a seasonal pattern where the warm months of May through August exhibit relatively breezy conditions, with speeds peaking at 3.4 m/s (8 mph) in May. The shift toward quieter winds in September signals a slowdown from the summer gales, paving the way for the stillness that often accompanies the upcoming fall days. As the year progresses, winds generally fluctuate with a notable peak in early spring, followed by a gradual decline as the cooler months approach, highlighting the unique rhythm of Aschaffenburg's weather throughout the seasons.

Average September Wind Speed in Aschaffenburg

The chart displays monthly wind speed patterns in Aschaffenburg, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.33.03.02.83.42.22.42.62.1 m/s2.82.53.0
Data source: Aschaffenburg September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Aschaffenburg Compares to Other Months

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

September and January present contrasting weather patterns, reflective of seasonal shifts. In September, temperatures range from a brisk 3°C (37°F) at night to a warm 31°C (88°F) during the day, with an average temperature of 15°C (60°F). The month experiences about 50 mm (2.0 in) of precipitation over roughly 8 days, alongside relatively high humidity levels of 85%. In contrast, January brings much colder conditions, with temperatures dropping as low as -14°C (8°F) and averaging just 2°C (35°F). The maximum temperature peaks at 12°C (54°F), while precipitation increases to 75 mm (2.9 in) over approximately 12 days, and humidity rises slightly to 91%. For a detailed look at what to expect, check out Aschaffenburg weather in January.

In September, the weather in Aschaffenburg features a wide temperature range, with minimums around 3°C (37°F) and maximums peaking at 31°C (88°F), averaging 15°C (60°F). With approximately 50 mm (2.0 in) of precipitation over 8 days and a humidity level of 85%, September offers a warm and moderately wet climate. In contrast, February showcases much colder temperatures, with lows dipping to -14°C (7°F) and highs reaching 18°C (65°F), averaging only 3°C (38°F). The month sees slightly more precipitation at 67 mm (2.6 in) spread over 11 days, accompanied by a humidity level of 89%. For more details, you can check Aschaffenburg weather in February.

In comparing the weather of September and March, it is clear that these months present distinct climatic characteristics. September enjoys a mild average temperature of 15°C (60°F), with maximums reaching up to 31°C (88°F), whereas March features a cooler average of 6°C (43°F) and maximums only up to 22°C (72°F). While September experiences less precipitation overall, with 50 mm (2.0 in) over 8 days, March sees a higher amount of rainfall at 88 mm (3.5 in) distributed over 14 days. Humidity levels remain relatively similar, hovering around 85% in September and 87% in March. For more detailed insights on March weather specifically, you can visit Aschaffenburg weather in March.

Comparing the weather in September and April reveals notable differences in temperature and precipitation patterns. September typically enjoys a warmer climate, with average temperatures around 15°C (60°F) and highs reaching up to 31°C (88°F), while April's temperatures are cooler, averaging 10°C (50°F) and peaking at 26°C (79°F). Despite being warmer, September also experiences more humidity at 85% compared to April's slightly lower humidity of 83%. In terms of precipitation, September sees a bit more rain with 50 mm (2.0 in) over about 8 days, while April has 42 mm (1.6 in) across 7 days. For more detailed insights on April's weather, you can check Aschaffenburg weather in April.

Both September and May showcase a range of temperatures, with September experiencing a wider fluctuation between its minimum and maximum temperatures, ranging from 3°C (37°F) to 31°C (88°F). In contrast, May starts slightly cooler with a minimum temperature of 0°C (32°F), but both months peak at the same high of 31°C (88°F). When it comes to precipitation, May is wetter, receiving 85 mm (3.4 in) over 12 days compared to September’s 50 mm (2.0 in) over 8 days. Humidity levels are a bit higher in September at 85%, compared to May’s 79%. For more detailed insights on May weather, you can check out Aschaffenburg weather in May.

When comparing the weather in September and June, we see notable differences in temperature and precipitation. September typically has a minimum temperature of 3°C (37°F) and an average of 15°C (60°F), while June starts warmer with a minimum of 6°C (42°F) and an average of 19°C (66°F). The maximum temperatures also reflect this shift, with September reaching up to 31°C (88°F) compared to June's 34°C (93°F). Additionally, June experiences more rainfall, with 87 mm (3.4 in) over about 12 days, compared to September's 50 mm (2.0 in) across 8 days. However, September maintains a slightly higher humidity level at 85%, compared to June's 82%. For a more detailed look, you can visit Aschaffenburg weather in June.

September and July showcase significant differences in weather patterns. In September, temperatures range from a chilly minimum of 3°C (37°F) to a warm maximum of 31°C (88°F), with an average temperature of 15°C (60°F). Conversely, July has a milder minimum of 8°C (46°F) and can soar to a scorching maximum of 37°C (100°F), resulting in a higher average temperature of 20°C (67°F). Moreover, September experiences less precipitation at 50 mm (2.0 in) over 8 days, compared to July’s 75 mm (3.0 in) over 12 days. Both months exhibit high humidity, with September slightly higher at 85% compared to July's 83%. For more detailed insights into July weather, you can check Aschaffenburg weather in July.

In comparing the weather patterns of September and August, one can observe several notable differences. September experiences a broader temperature range, with minimums dropping to 3°C and maximums reaching 31°C, leading to an average of 15°C. In contrast, August boasts warmer conditions, with minimums at 6°C and maximums peaking at 35°C, resulting in a higher average temperature of 20°C. Precipitation is slightly lower in September with 50 mm over 8 days compared to August's 66 mm across 11 days. Humidity levels are quite similar, with September at 85% and August at 84%. For a closer look at the specific weather patterns of August, you can refer to Aschaffenburg weather in August.

The weather in September showcases a wider temperature range, with minimums reaching 3°C (37°F) and maximums soaring up to 31°C (88°F), leading to a pleasant average of 15°C (60°F). This month experiences relatively low precipitation, with 50 mm (2.0 in) of rain over about 8 days, and humidity at a moderate 85%. In contrast, October brings cooler conditions, marked by minimum temperatures of 0°C (32°F) and a lower average of 11°C (52°F), while maximum temperatures peak at 25°C (77°F). Additionally, October sees an increase in precipitation to 67 mm (2.7 in) across 13 days, alongside a slight rise in humidity to 88%. For more detailed information, you can check Aschaffenburg weather in October.

September typically offers a more temperate climate with temperatures ranging from a minimum of 3°C (37°F) to a maximum of 31°C (88°F) and an average of 15°C (60°F). The month sees about 50 mm (2.0 in) of precipitation over approximately 8 days, accompanied by a humidity level of 85%. In contrast, November experiences colder conditions, with temperatures dropping to a minimum of -4°C (26°F) and averaging around 6°C (42°F), peaking at 20°C (69°F). Precipitation slightly increases to 56 mm (2.2 in) spread over 11 days, and humidity rises to 89%. For a closer look at November's specific climate conditions, check out Aschaffenburg weather in November.

September and December present a striking contrast in weather conditions. September boasts milder temperatures, with minimums around 3°C (37°F) and average highs reaching 31°C (88°F), complemented by relatively lower precipitation of 50 mm (2.0 in) over approximately 8 days. In contrast, December experiences a significant drop in temperatures, with a minimum of -7°C (20°F) and an average of just 3°C (38°F), while precipitation increases to 116 mm (4.6 in) distributed over 17 days. Additionally, humidity levels are higher in December at 91%, compared to September's 85%, contributing to a distinct chill in the air. For more details on December weather in this region, visit Aschaffenburg weather in December.

Compare Aschaffenburg's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Aschaffenburg

As September unfolds in Aschaffenburg, the weather presents a captivating transition from the heat of summer to the gentle embrace of autumn. With temperatures reaching a maximum of 31°C (88°F) yet averaging a more comfortable 15°C (60°F), this month showcases diverse climate characteristics. While the summer's warmth lingers, a notable decrease in temperature allows for refreshing coolness, especially during the nights. However, expect a fair share of rain, with about eight days of precipitation, contributing to a humidity level of around 85%. The combination of warmth and moisture creates a unique atmosphere, making September a delightful month for exploring the beauty of Aschaffenburg. For further insights, you can check out Aschaffenburg Climate.