September Weather in Wiesbaden, Germany

Last updated: February 26, 2025

In Wiesbaden, Germany, September embraces a dynamic climate characterized by a maximum temperature soaring to 33°C (91°F), with an average of 16°C (61°F) and a notable minimum of 3°C (37°F). This month experiences moderate precipitation, totaling 45 mm (1.8 in) over 7 days, contributing to a lush landscape. Coupled with a high humidity level of 85%, September offers a blend of warm days and cooler nights, making it a unique time for residents and visitors alike to enjoy the transition into autumn.

September Temperature in Wiesbaden

In Wiesbaden, Germany, the month of September marks a delightful transition into autumn, with temperatures reflecting a comfortable yet vibrant climate. With a minimum of 3°C (37°F) and a pleasant average of 16°C (61°F), days begin to showcase a gentle coolness, ideal for outdoor exploration. The maximum temperature rises to a warm 33°C (91°F), often reminiscent of summer's lingering charm. This month encapsulates a balance between warmth and crispness, as the region gradually shifts towards cooler weather, inviting locals and visitors alike to embrace the natural beauty of the changing season.

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

The chart illustrates September temperature patterns in Wiesbaden, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec363943505767686860524239
Data source: Temperature data for Wiesbaden 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 Wiesbaden

September in Wiesbaden, Germany, marks a notable transition in weather patterns, as precipitation begins to decline after the summer months. With an average of 45 mm (1.8 in) of rain over just 7 days, September showcases a shift towards drier conditions compared to the preceding months of June and July, which see significantly higher rainfall at 76 mm and 64 mm respectively. This dip in precipitation, alongside fewer rainy days, suggests the onset of autumn, setting the stage for the more substantial rainfall often experienced in October and December. Overall, September's weather provides a gentle lead-in to the wetter months ahead, inviting residents and visitors to enjoy clearer skies as the leaves begin to change.

September Precipitation Trends in Wiesbaden

The chart displays monthly precipitation patterns in Wiesbaden, 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.
JanFebMarAprMayJunJulAugSepOctNovDec565263347176646045544794
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Wiesbaden

As the summer gives way to autumn, September in Wiesbaden brings a slight uptick in humidity, settling at 85%. This marks a subtle shift from the typically warmer months of June through August, which boast humidity levels around 82-84%. Interestingly, this month's humidity is a touch higher than the seasonal low in May, which sits at 79%. As October approaches, humidity levels begin to rise again, reflecting the cooling trend that returns in the later months of the year. Overall, September serves as a transitional bridge, balancing the lingering warmth of summer with the impending chill of autumn, gently nudging humidity levels upwards.

September Average Humidity in Wiesbaden

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

As summer transitions into fall, September in Wiesbaden, Germany brings a moderate UV Index of 5, indicating a change from the high levels experienced in the peak months of June through August. During these sun-fueled months, residents and visitors faced a very high UV Index of 8, necessitating short burn times of just 15 minutes. However, as the sun begins to lower its intensity, the burn time extends to 30 minutes, making outdoor activities more manageable while still requiring some caution. Comparing September to earlier months, the gradual dip signals the importance of adapting sun protection strategies as the season shifts. For more detailed information on the UV Index throughout the year, you can visit Wiesbaden UV Index.

Maximum UV Index Levels in Wiesbaden for September

The chart shows the monthly maximum UV Index (UVI) for Wiesbaden 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.
JanFebMarAprMayJunJulAugSepOctNovDec234588875421
Data source: Wiesbaden 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 Wiesbaden

September in Wiesbaden, Germany, boasts a delightful 318 hours of sunshine, marking it as a vibrant month in the transition from summer to autumn. This favorable amount of sunshine continues the trend seen in the preceding months, which peak in July with 411 hours. As summer wanes, September manages to retain a comforting warmth while gradually surrendering to the cooler autumn days ahead. Compared to the earlier months, September shines brightly amid the overall decline in sunlight hours, showcasing the city’s enduring charm even as the year begins to wind down. This month serves as a beautiful farewell to the golden days of summer, inviting locals and visitors alike to bask in the mellow warmth of the sun before the shorter, darker days of winter take hold.

Monthly Sunshine Duration in Wiesbaden: September Highlighted

The September sunshine duration represents the total number of hours Wiesbaden 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.
JanFebMarAprMayJunJulAugSepOctNovDec108h201h264h344h382h391h411h383h318h244h168h122h
Data source: Wiesbaden September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Wiesbaden During September

In Wiesbaden, Germany, the likelihood of sunny weather in September stands at a promising 41%, marking one of the higher chances for sunshine as summer transitions into autumn. This percentage reflects a slight upward trend compared to the relatively cloudy months of August and July, which both hover around 30%. Interestingly, sunshine begins to dip again through the fall months, notably dropping to 28% in October and 17% in November. Thus, September serves as a sweet spot for sun-seekers, hinting at a delightful blend of warmth and brightness before the gloomier days of winter set in.

Percentage of Sunny Days in September in Wiesbaden

The chart illustrates the percentage of sunny days in Wiesbaden 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 Wiesbaden experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec12%33%45%45%31%33%34%30%41%28%17%14%
Data source: Wiesbaden September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Wiesbaden in September

As summer fades into autumn, September in Wiesbaden offers a gentle transition with 12 hours of daylight—a noticeable shift from the vibrant 16 hours of sunshine experienced in June. This month marks the beginning of shorter days, as the sun hangs a little less in the sky compared to the peak summer months. The gradual decline in daylight continues the trend established in August, where the lush summer warmth gives way to the cooler embrace of fall. With daylight decreasing steadily through the months, September serves as a beautiful reminder of the changing seasons, where golden leaves start to replace the greenery, inviting residents to savor outdoor moments before the shorter autumn days settle in.

Average Daylight Hours in Wiesbaden for September

The chart illustrates the variation in daylight duration in Wiesbaden throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 37m10h 5m11h 55m13h 47m15h 25m16h 15m15h 49m14h 21m12h 33m10h 41m9h 1m8h 9m
Data source: Wiesbaden daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Wiesbaden

As autumn approaches, the September winds in Wiesbaden, Germany, bring a gentle shift in the air, with an average speed of just 2.1 m/s (5 mph). This noticeable dip marks a gradual decline from the brisk breezes of spring and early summer, where wind speeds peaked at 3.4 m/s (8 mph) in May. Interestingly, September's winds are among the calmest of the year, echoing a trend of decreasing wind speed from the summer months, which experienced higher velocities. This serene atmosphere invites residents and visitors alike to enjoy the stunning fall scenery, punctuated by colorful foliage gently swayed by the mild autumn air.

Average September Wind Speed in Wiesbaden

The chart displays monthly wind speed patterns in Wiesbaden, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.32.93.02.73.42.22.42.62.1 m/s2.72.42.7
Data source: Wiesbaden September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Wiesbaden Compares to Other Months

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

September weather is characterized by a broader temperature range, with minimums around 3°C (37°F) and maximums reaching up to 33°C (91°F), resulting in a pleasant average of 16°C (61°F). The month sees moderate precipitation of about 45 mm (1.8 in) over roughly 7 days, accompanied by high humidity at 85%. In contrast, January brings much colder conditions, with temperatures dipping as low as -9°C (15°F) and averaging only 2°C (37°F), while high temperatures rarely exceed 13°C (55°F). Precipitation increases slightly to 56 mm (2.2 in) and lasts for about 11 days, with the humidity slightly higher at 91%. For more detailed information about the winter conditions, you can check Wiesbaden weather in January.

September and February exhibit striking differences in weather patterns. In September, temperatures range from a low of 3°C (37°F) to a high of 33°C (91°F), with an average temperature of 16°C (61°F). The month sees approximately 45 mm (1.8 in) of precipitation over an average of 7 days, coupled with high humidity averaging around 85%. In contrast, February is considerably colder, with temperatures dipping to a minimum of -11°C (13°F) and peaking at 18°C (65°F), resulting in an average of 4°C (39°F). This month has slightly higher rainfall at 52 mm (2.0 in) over about 11 days, along with a marginally higher humidity level of 89%. For more detailed insights, you can check Wiesbaden weather in February.

When comparing the weather in September and March, notable differences emerge. September typically enjoys warmer temperatures, with averages around 16°C (61°F) and maximums reaching as high as 33°C (91°F), while March is much cooler, averaging only 6°C (44°F) and peaking at 22°C (72°F). Precipitation levels are generally higher in March, totaling 63 mm (2.5 in) over about 13 days, compared to September’s 45 mm (1.8 in) of rain spread across 7 days. Additionally, March tends to be slightly more humid, with levels at 87% compared to 85% in September. For more detailed information about March weather, you can visit Wiesbaden weather in March.

In comparing the weather of September and April, we see notable differences in temperature and precipitation. September boasts a much warmer average temperature of 16°C (61°F), with maximums reaching up to 33°C (91°F), while April's average is cooler at 10°C (50°F), with highs of 27°C (80°F). Precipitation is slightly higher in September at 45 mm (1.8 in), compared to April's 34 mm (1.3 in), although both months experience rain on about 7 days. Humidity levels are relatively similar, with September at 85% and April at 83%. For a more detailed look at April weather in Wiesbaden, you can check out Wiesbaden weather in April.

September and May present contrasting weather patterns, with September experiencing a wider temperature range, featuring minimums of 3°C (37°F), average highs of 16°C (61°F), and peaks of up to 33°C (91°F). In contrast, May generally offers a milder climate, with minimum temperatures around 0°C (33°F), average temperatures near 14°C (57°F), and maximums reaching 32°C (90°F). Interestingly, while September has less precipitation at 45 mm (1.8 in) over 7 days, May sees more rainfall with 71 mm (2.8 in) distributed over 12 days. Humidity levels are slightly higher in September at 85%, compared to 79% in May. For more detailed information, check out Wiesbaden weather in May.

When comparing the weather in September and June, we see notable differences in temperature and precipitation. September experiences a broader temperature range, with minimums around 3°C (37°F) and maximums reaching up to 33°C (91°F), yielding an average temperature of 16°C (61°F). It tends to be quite humid at 85%, with approximately 45 mm (1.8 in) of rain spread over 7 days. In contrast, June offers warmer conditions, featuring minimum temperatures of 7°C (45°F) and highs up to 36°C (97°F), resulting in an average of 19°C (67°F). June is wetter, with around 76 mm (3.0 in) of precipitation across 11 days and slightly lower humidity at 82%. For a more detailed look at June’s climate, visit Wiesbaden weather in June.

When comparing the weather in September to that of July, we see notable differences in temperature and precipitation. September experiences a wider temperature range, with minimums as low as 3°C (37°F) and maximums reaching 33°C (91°F), averaging around 16°C (61°F). In contrast, July has generally warmer temperatures, with minimums of 8°C (47°F) and maximums soaring to 39°C (103°F), averaging 20°C (69°F). Precipitation is also more pronounced in July, totaling 64 mm (2.5 in) over 11 days compared to September's 45 mm (1.8 in) over 7 days. Both months have high humidity levels, but September is slightly more humid at 85% compared to July's 83%. For more details on July weather, check out Wiesbaden weather in July.

In comparing the weather patterns of September and August, we see notable differences. September experiences a range of temperatures, with a minimum of 3°C (37°F) and a maximum of 33°C (91°F), leading to an average of 16°C (61°F). In contrast, August is warmer overall, with minimum temperatures around 7°C (44°F) and maximums reaching 36°C (96°F), yielding an average of 20°C (68°F). Precipitation is also more frequent in August, with 60 mm (2.3 in) over 12 days, compared to September's 45 mm (1.8 in) over just 7 days. Humidity remains quite similar, hovering around 85% in September and 84% in August. For a detailed look at what August weather is like, you can visit Wiesbaden weather in August.

In comparing the weather between September and October, September boasts a wider temperature range, with minimums around 3°C (37°F) and maximums peaking at 33°C (91°F), leading to a comfortable average of 16°C (61°F). However, the month still experiences a fair amount of humidity at 85% and a total precipitation of 45 mm (1.8 in) spread over 7 days. In contrast, October sees a noticeable drop in temperatures, with minimums hovering near freezing at 0°C (32°F) and an average of only 11°C (52°F). While maximum temperatures reach a pleasant 26°C (79°F), it also has slightly higher precipitation at 53 mm (2.1 in) over 11 days, with humidity increasing to 88%. For more detailed information, you can check Wiesbaden 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 33°C (91°F), averaging around 16°C (61°F). This month experiences relatively lower humidity at 85% and has about 7 days of precipitation totaling 45 mm (1.8 in). In contrast, November brings a notable drop in temperatures, with a minimum of -4°C (25°F), an average of 6°C (43°F), and a maximum of 21°C (70°F). The humidity rises slightly to 89%, and precipitation increases to 47 mm (1.9 in) spread over around 11 days. For more detailed information, you can check Wiesbaden weather in November.

September and December present striking contrasts in weather. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 33°C (91°F), with an average of 16°C (61°F), offering generally warmer days. The month sees relatively low precipitation, totaling 45 mm (1.8 in) over about 7 days, and humidity rests at 85%. In contrast, December experiences much chillier conditions, featuring a minimum temperature of -6°C (21°F) and a maximum of 14°C (58°F), with an average of just 4°C (39°F). This month is also characterized by higher precipitation, accumulating 94 mm (3.7 in) over 17 days, along with increased humidity at 91%. For a closer look at December weather specifics, check Wiesbaden weather in December.

Compare Wiesbaden's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Wiesbaden

As September unfolds in Wiesbaden, the weather introduces a refreshing transition from the sweltering summer heat to more temperate conditions. With a mix of warm days featuring delightful maximum temperatures and cooler nights, this month offers a pleasant escape for locals and visitors alike. Although rain may grace the city during approximately seven days, the overall humidity—averaging around 85%—adds a touch of freshness to the air. This unique blend of warmth and occasional precipitation makes September stand out from the hotter summer months, providing perfect outdoor conditions without the oppressive heat. For a deeper dive into weather trends throughout the year, check out Wiesbaden Climate.