September Weather in Regensburg, Germany

Last updated: February 26, 2025

Discover the September weather in Regensburg, Germany, where the transition from summer to autumn paints a picturesque backdrop. This month sees maximum temperatures reaching up to 29°C (85°F), providing warm sunny days, while the average temperature settles at a comfortable 15°C (59°F). However, a chill can be felt during the cooler nights with temperatures dropping to a brisk 1°C (34°F). Expect a total precipitation of 55 mm (2.2 in) across 10 rainy days, contributing to a lush, vibrant environment. With humidity levels hovering around 85%, September in Regensburg offers a dynamic weather experience that captivates visitors and residents alike.

September Temperature in Regensburg

In September, Regensburg begins to transition from summer's warmth to the crispness of autumn, offering a delightful range of temperatures. The month sees a minimum temperature of 1°C (34°F), allowing for a chilly start, while the average temperature hovers around a comfortable 15°C (59°F). As the days progress, temperatures can peak at a pleasant 29°C (85°F), making it ideal for outdoor activities and exploring the city’s rich history. This month marks a noticeable shift from the high heat of August, providing cooler evenings and gentle breezes, perfect for enjoying the beautiful autumn colors that start to emerge. Overall, September in Regensburg encapsulates the charm of early fall, blending warmth and coolness into an inviting climate.

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

The chart illustrates September temperature patterns in Regensburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec323641495666676758504035
Data source: Temperature data for Regensburg 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 Regensburg

In September, Regensburg experiences a gentle transition into autumn, marked by an average precipitation of 55 mm (2.2 in) over 10 days. This amount is slightly below the wetter months of late summer, such as August, which typically sees 105 mm (4.1 in). The consistent rainfall patterns observed throughout the earlier months — with May and August standing out as the wettest — give way to drier spells, signaling a shift as the year heads toward its cooler seasons. While September brings fewer rainy days compared to the preceding months, the overall trend demonstrates the city's unpredictable climate, where bursts of rain can still flow through the crisp autumn air.

September Precipitation Trends in Regensburg

The chart displays monthly precipitation patterns in Regensburg, 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.
JanFebMarAprMayJunJulAugSepOctNovDec60565939103868410555594590
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Regensburg

In September, Regensburg experiences a humidity level of 85%, slightly higher than the previous months of summer. This reflects a subtle shift as the city transitions from the warmer, drier days of summer, when humidity levels hover around 84% in August and 83% in July. Notably, September’s humidity creates a comfortable balance as it sits right between the lush dampness of the early months of the year—where levels reach up to 91% in January—and the more moderate 84% in April and May. As autumn approaches, humidity in Regensburg tends to rise again, peaking later at 88% in October and November, suggesting a return to the damp atmosphere typical of the region during the cooler months. Thus, September serves as a transitional period, striking a harmony between summer's warmth and autumn's embrace.

September Average Humidity in Regensburg

This chart illustrates the average monthly humidity levels in Regensburg, 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%88%84%77%82%83%84%85%88%88%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Regensburg

As summer transitions to fall, September in Regensburg experiences a UV Index of 6, placing it in the high exposure category with a burn time of 25 minutes. This marks a slight dip from the peak values observed in the summer months of June through August, when the index soared to 9 and consistently hovered around 8. With the onset of autumn, sun safety remains essential, as the UV levels still warrant caution. As you enjoy the crisp air and changing leaves, keep in mind to protect your skin during those sunny days. You can find more information at Regensburg UV Index.

Maximum UV Index Levels in Regensburg for September

The chart shows the monthly maximum UV Index (UVI) for Regensburg 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.
JanFebMarAprMayJunJulAugSepOctNovDec235689886421
Data source: Regensburg 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 Regensburg

As the summer warmth gradually transitions into a crisp autumn in Regensburg, September shines brightly with an impressive 312 hours of sunshine. This month enjoys a notable balance, maintaining a vibrant glow that contrasts sharply with the earlier months of the year. Compared to the sun-drenched July and August, September offers slightly less light, yet it still stands out as a pivotal time of year where nature begins to shift. As days shorten, the warmth of summer lingers, providing a beautiful backdrop for leisurely strolls through the historic streets of this charming Bavarian city. With a significant increase from the winter months, September invites both locals and visitors to embrace the lingering sun, highlighting a remarkable trend of increasing brightness leading into autumn.

Monthly Sunshine Duration in Regensburg: September Highlighted

The September sunshine duration represents the total number of hours Regensburg 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.
JanFebMarAprMayJunJulAugSepOctNovDec121h210h283h344h375h403h423h386h312h258h181h135h
Data source: Regensburg September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Regensburg During September

When it comes to sunny weather in September in Regensburg, Germany, the probabilities begin to shift noticeably from the summer months. With a 47% chance of sunshine, September stands out as a peak period for those seeking clear skies, especially when compared to the lower percentages found earlier in the year. This increase in sunshine likelihood is particularly refreshing after the relatively cloudy summer, making September a promising month for outdoor activities. As the days begin to shorten and the crisp autumn air sets in, residents and visitors alike can take advantage of this seasonal transition and enjoy the substantial opportunity for sunshine.

Percentage of Sunny Days in September in Regensburg

The chart illustrates the percentage of sunny days in Regensburg 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 Regensburg experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec16%37%42%38%27%34%33%29%47%35%24%15%
Data source: Regensburg September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Regensburg in September

As summer wanes in Regensburg, September brings a gentle transition marked by 12 hours of daylight. This decrease from the longer days of summer, peaking at 16 hours in June, signals the approach of autumn. With the days gradually shortening, September offers a balance of sunshine that is still vibrant compared to the winter months. The steady decline in daylight from the 15 hours of July and 14 hours of August prepares residents and visitors alike for the cozy embrace of fall, where shorter, yet often still pleasant days, reflect the changing season.

Average Daylight Hours in Regensburg for September

The chart illustrates the variation in daylight duration in Regensburg throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 43m10h 9m11h 55m13h 44m15h 18m16h 7m15h 41m14h 17m12h 32m10h 44m9h 7m8h 16m
Data source: Regensburg daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Regensburg

As September rolls into Regensburg, the gentle whisper of the wind begins to weave through the city's charming streets. With an average wind speed of 2.1 m/s (5 mph), this month marks a noticeable drop from the breezier conditions of late spring and early summer. The trend of decreasing wind speeds continues, reflecting a transition from the higher gusts of May at 3.4 m/s (8 mph) to this more tranquil pace. This slight lull creates a serene atmosphere, perfect for leisurely strolls along the Danube River, where the easy breeze invites a moment of reflection as summer edges towards autumn.

Average September Wind Speed in Regensburg

The chart displays monthly wind speed patterns in Regensburg, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.12.62.82.83.42.12.22.42.1 m/s2.42.42.9
Data source: Regensburg September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Regensburg Compares to Other Months

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

September and January present striking contrasts in weather. September boasts a more temperate climate, with temperatures ranging from a chilly 1°C (34°F) at night to a warm 29°C (85°F) during the day, and an average of 15°C (59°F). In contrast, January is much colder, featuring temperatures that can plummet to a minimum of -18°C (-1°F), averaging around 0°C (32°F), and peaking at just 13°C (55°F). While both months experience similar precipitation levels of around 60 mm (2.3 in) over approximately 10 days, January has a slightly higher humidity at 91%, compared to September's 85%. To explore more about the winter conditions, you can check Regensburg weather in January.

In comparing the weather between September and February, we see a stark contrast in temperatures and conditions. September boasts a more moderate temperature range, with minimums of 1°C (34°F) and maximums reaching up to 29°C (85°F), averaging a comfortable 15°C (59°F). This month also experiences relatively high humidity at 85%, along with 55 mm of precipitation over about 10 days.

Conversely, February brings much colder temperatures, with lows plunging to -17°C (2°F) and a chilly average of 2°C (36°F). The maximum temperature in February is only 17°C (62°F), reflecting a significant drop compared to September. Precipitation is similar at 56 mm, but it occurs over slightly more days (11), coupled with a higher humidity of 89%. For a more detailed look at February weather, you can check Regensburg weather in February.

In comparing the weather of September and March, notable differences emerge, particularly in temperature and conditions. September boasts a range of temperatures with a minimum of 1°C (34°F) and an average of 15°C (59°F), reaching a pleasant maximum of 29°C (85°F). This month typically sees around 55 mm (2.2 in) of precipitation spread over approximately 10 days, with humidity levels at 85%. In contrast, March presents a cooler landscape, with minimum temperatures plunging to -14°C (8°F) and an average of only 5°C (41°F). It can peak at 21°C (69°F) but generally remains chillier with slightly higher precipitation at 59 mm (2.3 in) over about 13 days, accompanied by an increased humidity of 88%. For a closer look at the climate specifics, check out Regensburg weather in March.

September and April showcase contrasting weather patterns. In September, temperatures range from a minimum of 1°C (34°F) to an average of 15°C (59°F), peaking at 29°C (85°F), while April experiences cooler temperatures, with a minimum of -6°C (21°F) and an average of 9°C (49°F), climbing to a maximum of 26°C (79°F). Precipitation in September is slightly higher at 55 mm (2.2 in) over 10 days, compared to April's 39 mm (1.5 in) across 8 days. Humidity levels are comparable, with September at 85% and April at 84%. For a deeper look at the weather specifics, you can visit Regensburg weather in April.

September and May present contrasting weather patterns, though they both experience similar maximum temperatures of 29°C (85°F). In September, temperatures range from a minimum of 1°C (34°F) to an average of 15°C (59°F), with a higher humidity level of 85%. The month sees approximately 55 mm (2.2 in) of precipitation over about 10 days. In contrast, May has slightly cooler minimum temperatures, dipping to -1°C (30°F) and an average of 13°C (56°F), while it experiences more rainfall—around 103 mm (4.0 in) over 15 days. Humidity is also lower in May at 77%. For a detailed overview of weather conditions in May, you can explore Regensburg weather in May.

September and June showcase distinctly different weather patterns. In September, temperatures range from a chilly minimum of 1°C (34°F) to a pleasantly warm maximum of 29°C (85°F), with an average of 15°C (59°F). The month experiences about 55 mm (2.2 in) of precipitation over approximately 10 days, accompanied by relatively high humidity at 85%. In contrast, June presents a warmer climate, with minimum temperatures around 4°C (40°F) and a maximum reaching up to 35°C (94°F). The average temperature for June is a comfortable 19°C (66°F), and it sees slightly higher precipitation at 86 mm (3.4 in) over 11 days, with a humidity level of 82%. For a more detailed look into June weather, you can check out Regensburg weather in June.

In comparison to July, September experiences cooler temperatures, with a minimum of 1°C (34°F) and an average of 15°C (59°F), whereas July's temperatures range from a minimum of 8°C (46°F) to an average of 19°C (67°F). September can reach a maximum of 29°C (85°F), while July has hotter peaks at 35°C (95°F). Both months see notable precipitation, with September receiving 55 mm (2.2 in) over 10 days and July slightly higher at 84 mm (3.3 in) over 12 days. Humidity levels are relatively similar, with September at 85% and July at 83%. For more detailed insights on July weather, visit Regensburg weather in July.

When comparing the weather in September to August, we see notable differences in temperature and precipitation. September tends to be cooler, with a minimum temperature dropping to 1°C (34°F) and a maximum of 29°C (85°F), while August features warmer conditions with a minimum of 7°C (45°F) and a peak temperature reaching 34°C (94°F). Precipitation is also higher in August, totaling 105 mm (4.1 in) over 14 days, compared to September's 55 mm (2.2 in) over 10 days. Humidity levels remain fairly similar, with September at 85% and August slightly lower at 84%. For further details, you can explore Regensburg weather in August.

September and October present a noticeable shift in weather conditions. In September, temperatures range from a mild 1°C (34°F) to a warm 29°C (85°F), with an average of 15°C (59°F), while October sees cooler temperatures, with a minimum of -2°C (29°F) and a maximum of 23°C (74°F), averaging 10°C (50°F). Precipitation is slightly higher in October, recorded at 59 mm (2.3 in) over 11 days, compared to September's 55 mm (2.2 in) over 10 days. Additionally, humidity levels rise from 85% in September to 88% in October, contributing to a crisp autumnal feel. For more detailed insights into October weather, check out Regensburg weather in October.

September and November showcase a notable contrast in weather. In September, temperatures range from a minimum of 1°C (34°F) to a maximum of 29°C (85°F), with an average of 15°C (59°F). The month experiences a relatively high humidity of 85% along with 55 mm (2.2 in) of precipitation spread over 10 days. In contrast, November sees cooler temperatures, with a minimum of -4°C (24°F) and a maximum of 18°C (65°F), averaging around 4°C (40°F). The humidity slightly increases to 88%, and precipitation is slightly lower at 45 mm (1.8 in) over 9 days. For more details on the November weather, you can visit Regensburg weather in November.

September and December present contrasting weather conditions. In September, temperatures range from a mild 1°C (34°F) at their minimum to a warm 29°C (85°F) at their peak, with an average of 15°C (59°F). The month sees about 55 mm (2.2 in) of precipitation over roughly 10 days and maintains a humidity level of 85%. In stark contrast, December experiences colder temperatures, with a minimum of -9°C (15°F) and a maximum of 13°C (55°F), averaging just 2°C (36°F). Precipitation increases to 90 mm (3.5 in) across approximately 16 days, alongside higher humidity levels of 91%. These changes create a notable shift from the warmth of September to the chill of December, making for a much different experience. For more details, check out Regensburg weather in December.

Compare Regensburg's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Regensburg

As September rolls into Regensburg, the lingering warmth of summer gradually gives way to a cooler ambiance, creating a delightful transitional period. With temperatures hovering around a pleasant 15°C on average, residents and visitors alike can enjoy the crisp air while still experiencing occasional warm days that peak near 29°C. However, be prepared for the occasional rain shower, as the month sees about 10 days of precipitation, contributing to the lush scenery. The 85% humidity can make the air feel a bit thicker, especially during those warmer afternoons. This unique blend of warm and cool, coupled with increased rainfall, sets September apart as a month of beautiful change. For a deeper dive into the seasonal shifts, check out Regensburg Climate.