September Weather in Adenau, Germany

Last updated: February 26, 2025

In Adenau, Germany, September ushers in a blend of refreshing weather and occasional showers. The maximum temperature can peak at an inviting 32°C (89°F), while the average settles around a comfortable 15°C (58°F), offering a pleasant experience for outdoor enthusiasts. However, the month also brings cooler moments, with minimum temperatures dipping to 1°C (35°F). With 53 mm (2.1 in) of precipitation spread over 8 days, visitors should be prepared for the occasional rain shower amidst higher humidity levels averaging a humid 81%. Whether you're exploring scenic trails or enjoying local festivities, September in Adenau combines warmth with a hint of fall's approach, creating a captivating atmosphere for all.

September Temperature in Adenau

In Adenau, Germany, September marks a significant transition in temperatures as summer gracefully gives way to autumn. The month opens with a cool minimum of 1°C (35°F), but the average temperature comfortably sits around 15°C (58°F), signaling a shift from the heat of July and August. As days shorten, the maximum temperature can still reach a warm 32°C (89°F), inviting a final taste of summer's warmth. This blend of cooler mornings and pleasantly warm afternoons creates a delightful atmosphere, perfect for enjoying the scenic beauty of the region while the leaves begin to hint at their impending change. Overall, September serves as a beautiful reminder of the seasonal cycle, showcasing both the lingering warmth of summer and the crispness of autumn.

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

The chart illustrates September temperature patterns in Adenau, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec363943485564656558524339
Data source: Temperature data for Adenau generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Adenau

In September, Adenau, Germany experiences a relatively mild transition into autumn, marked by an average precipitation of 53 mm (2.1 in) over approximately 8 days of rain. This is a noticeable decrease compared to the summer months, as precipitation peaks in July with 87 mm (3.4 in) and remains robust through August. The shift towards drier conditions in September contributes to a gradual decline in monthly rainfall, highlighting the region's typical seasonal patterns. As the year progresses, the precipitation further dips in October, reflecting a trend of decreasing rainfall as the colder months approach, culminating in a notable increase again in December. This ebb and flow of precipitation encapsulates Adenau's dynamic climate, offering a glimpse into the changing seasons.

September Precipitation Trends in Adenau

The chart displays monthly precipitation patterns in Adenau, 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.
JanFebMarAprMayJunJulAugSepOctNovDec635969398387878153614890
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Adenau

In September, Adenau experiences a notable shift in humidity levels, with a rise to 81% after the drier summer months. This increase reflects a gradual return to the heightened moisture typical of the fall season, as the humidity level aligns more closely with early autumn patterns. Following the summer lows of 71% in August and 72% in July, September acts as a bridge, where the air becomes noticeably more humid but still retains a hint of summer’s warmth. As the year progresses towards October and November, humidity levels continue to climb, peaking again in the winter months, but September marks a pivotal transition, setting the stage for the cooler, wetter days to come.

September Average Humidity in Adenau

This chart illustrates the average monthly humidity levels in Adenau, 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%90%87%84%77%74%72%71%81%88%91%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Adenau

As summer gives way to autumn in September in Adenau, Germany, the UV Index settles at a comfortable level of 6, marking a transition to high exposure. This slight decrease from the peak summer months shows the waning intensity of the sun, yet the burn time remains moderately quick at 25 minutes. It's essential to stay mindful of sun protection as the days grow shorter but still offer ample opportunities for outdoor activities. With the UV Index gradually declining from the heights experienced in the summer, September stands out as a time to enjoy the pleasant weather while keeping skin safety in mind. For more details on sun safety, you can check the Adenau UV Index.

Maximum UV Index Levels in Adenau for September

The chart shows the monthly maximum UV Index (UVI) for Adenau 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.
JanFebMarAprMayJunJulAugSepOctNovDec234589876421
Data source: Adenau 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 Adenau

In Adenau, Germany, September marks a delightful shift in the seasonal rhythm, basking in 316 hours of sunshine. This sun-drenched month follows a vibrant summer, where July shines the brightest with 411 hours of radiant light. As the sun begins to mellow, September brings a moderate glow, transitioning smoothly from the intense summer days of June and July back to more measured sunlight in October, which features 234 hours. The decrease in hours is gentle, underscoring a trend of gradually diminishing daylight leading into the autumn months. As the fall approaches, the scenery transforms, but September still offers a cheerful farewell to summer, inviting both locals and visitors to savor the last warm rays.

Monthly Sunshine Duration in Adenau: September Highlighted

The September sunshine duration represents the total number of hours Adenau 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.
JanFebMarAprMayJunJulAugSepOctNovDec110h201h266h349h393h402h411h382h316h234h176h119h
Data source: Adenau September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Adenau During September

As September rolls into Adenau, Germany, the chances of enjoying sunny weather rise to 40%, making it one of the more promising months for sun seekers. This marks a subtle increase from the summer months, where the likelihood hovered around 31%. Interestingly, September's weather offers a refreshing transition as the summer warmth lingers while edging into the cooler autumn days. Compared to earlier months like February and March—when the sun makes an appearance only 32% and 41% of the time, respectively—September stands out as a delightful period for outdoor activities. Thus, while those seeking sun should remain mindful of the approaching autumn, September definitely presents a favorable window for sunshine in Adenau.

Percentage of Sunny Days in September in Adenau

The chart illustrates the percentage of sunny days in Adenau 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 Adenau experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec9%32%41%41%30%31%31%31%40%29%23%13%
Data source: Adenau September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Adenau in September

As autumn descends on Adenau, Germany, September marks a transition in daylight duration, offering approximately 12 hours of light each day. This decrease from the peak of 16 hours in June signifies the waning summer days, bringing a gentle reminder of the seasonal shift ahead. Following a lively summer filled with plentiful daylight, the days gradually shorten, with October expected to further reduce daylight to 10 hours. September's weather, with its mild temperatures and vibrant fall foliage, provides a perfect backdrop, allowing residents and visitors to savor the last warm days before winter's chill sets in. The gradual ebb of sunlight from the long summer days evokes a sense of reflection and anticipation for the cozy, indoor moments that the colder months bring.

Average Daylight Hours in Adenau for September

The chart illustrates the variation in daylight duration in Adenau throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 33m10h 3m11h 55m13h 49m15h 29m16h 20m15h 53m14h 24m12h 33m10h 40m8h 58m8h 4m
Data source: Adenau daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Adenau

As summer fades, September in Adenau, Germany greets residents with a noticeable shift in wind patterns. The average wind speed drops to a gentle 2.2 m/s (5 mph), marking the month's calmest breezes of the year. This decline continues the trend of diminishing winds from the earlier summer months, offering a serene transition to the autumn season. In contrast to the spring and summer, where wind speeds consistently hover around the 3-4 m/s range, September's breezes carry a whisper of stillness, inviting both contemplation and the enjoyment of the vibrant fall foliage that begins to grace the landscape. As October approaches, wind speeds are set to rise again, restoring a sense of briskness, but for now, September embodies a tranquil interlude amid nature’s changing rhythm.

Average September Wind Speed in Adenau

The chart displays monthly wind speed patterns in Adenau, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.83.73.53.03.82.42.83.02.2 m/s3.72.83.5
Data source: Adenau September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Adenau Compares to Other Months

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

In September, the weather in Adenau is generally warmer, with temperatures ranging from a minimum of 1°C (35°F) to a maximum of 32°C (89°F) and an average of 15°C (58°F). The month experiences about 53 mm (2.1 in) of precipitation over approximately 8 days, along with a relatively high humidity level of 81%. In contrast, January brings much colder conditions, with temperatures dipping to a minimum of -10°C (15°F) and averaging around 2°C (36°F), peaking at just 12°C (55°F). Precipitation increases slightly to 63 mm (2.5 in) over 13 days, and humidity rises to 91%. For a more detailed look at January weather specifics, visit Adenau weather in January.

In September, temperatures range from a minimum of 1°C (35°F) to a maximum of 32°C (89°F), averaging around 15°C (58°F), accompanied by relatively moderate humidity at 81%. The month sees about 53 mm (2.1 in) of precipitation over approximately 8 days. In contrast, February experiences colder conditions, with temperatures dipping as low as -12°C (12°F) and reaching highs of 20°C (68°F), resulting in an average temperature of 4°C (39°F). Precipitation increases slightly to 59 mm (2.3 in) over 11 days, and humidity is higher at 90%. For more detailed information, you can check Adenau weather in February.

In September, the weather tends to be warmer, with temperatures ranging from a minimum of 1°C (35°F) to a maximum of 32°C (89°F), and an average of 15°C (58°F). The month sees about 53 mm (2.1 in) of precipitation over approximately 8 days, and humidity levels sit at 81%. In contrast, March experiences cooler temperatures, with a range from a low of -12°C (11°F) to a high of 22°C (72°F), averaging around 6°C (43°F). This month is slightly wetter, receiving around 68 mm (2.7 in) of rainfall spread over 15 days, with a higher humidity level of 87%. For more details, check out Adenau weather in March.

When comparing the weather in September and April, we observe notable differences in temperature and precipitation patterns. September typically has a wider temperature range, with minimums around 1°C (35°F) and maximums reaching up to 32°C (89°F), leading to an average of 15°C (58°F). In contrast, April experiences cooler temperatures, ranging from a minimum of -4°C (25°F) to a maximum of 26°C (79°F), with an average of 9°C (49°F).

In terms of precipitation, September receives about 53 mm (2.1 in) over approximately 8 days, while April has slightly less rainfall at 39 mm (1.5 in) but over a longer duration of about 10 days. Humidity levels are relatively high in both months, with September at 81% and April at 84%. For a more detailed look at April weather, check out Adenau weather in April.

When comparing the weather in September and May, both months exhibit a range of temperatures, but with distinct characteristics. September typically showcases higher maximum temperatures, averaging around 15°C (58°F) and reaching up to 32°C (89°F), while May features a slightly cooler average of 13°C (55°F) with a peak of 31°C (88°F). In terms of precipitation, May experiences slightly more rain, with 83 mm (3.3 in) over 13 days compared to September's 53 mm (2.1 in) across 8 days. Humidity levels are also somewhat higher in September at 81%, while May holds a lower humidity of 77%. For further details, visit Adenau weather in May.

When comparing the weather in September and June, September typically boasts a wider range of temperatures, with a minimum of 1°C (35°F) and a maximum of 32°C (89°F), averaging around 15°C (58°F). In contrast, June's milder temperatures have a minimum of 7°C (44°F) and a maximum of 33°C (92°F), with an average of 18°C (64°F). While September experiences 53 mm (2.1 in) of precipitation over about 8 days, June has higher rainfall at 86 mm (3.4 in) spread across 13 days. Additionally, September is characterized by higher humidity at 81%, compared to the more comfortable 74% in June. For a more detailed look at June's weather, visit Adenau weather in June.

When comparing the weather in September to July, there are notable differences in temperature and precipitation. September experiences a broader range of temperatures, with a minimum of 1°C (35°F) and a maximum of 32°C (89°F), while July has a milder minimum of 7°C (45°F) and a peak of 38°C (100°F). The average temperature in September is 15°C (58°F), compared to July's average of 18°C (65°F). Additionally, September sees less precipitation, with 53 mm (2.1 inches) over 8 days, whereas July has higher rainfall at 87 mm (3.4 inches) over 11 days. The humidity is also higher in September at 81%, compared to 72% in July. For more details on July's weather patterns, you can visit Adenau weather in July.

In comparing the weather of September and August, September presents a cooler temperature range with a minimum of 1°C (35°F) and an average of 15°C (58°F), whereas August experiences milder conditions, with lows of 6°C (42°F) and an average of 18°C (65°F). The maximum temperature in September reaches 32°C (89°F), slightly lower than August's peak of 34°C (94°F). Additionally, September sees less precipitation overall, totaling 53 mm (2.1 in) across 8 days, compared to August's 81 mm (3.2 in) over 15 days, suggesting that September tends to be drier. Notably, humidity is higher in September at 81% compared to 71% in August, contributing to a different feel in the atmosphere. For more detailed information about August's weather, check out Adenau weather in August.

September and October showcase a notable shift in weather patterns. In September, temperatures range from a minimum of 1°C (35°F) to a max of 32°C (89°F), with an average of 15°C (58°F), indicating a warm end to summer. The month experiences 53 mm (2.1 in) of precipitation over about 8 days and boasts a humidity level of 81%. In contrast, October sees cooler conditions with a minimum temperature of -1°C (31°F) and a maximum of 25°C (77°F), averaging 11°C (52°F). Precipitation increases slightly to 61 mm (2.4 in) across 12 days, with humidity rising to 88%. This shift highlights October's transition to a more autumnal climate, making it a stark contrast to the warmth of September. For more detailed insights, you can check out this link: Adenau weather in October.

September weather tends to be warmer, with temperatures ranging from a minimum of 1°C (35°F) to a maximum of 32°C (89°F) and an average of 15°C (58°F). This month also receives about 53 mm (2.1 in) of precipitation over approximately 8 days, accompanied by a relatively high humidity level of 81%.

In contrast, November sees a significant drop in temperature, with a minimum of -4°C (24°F), an average of 6°C (43°F), and a maximum of 19°C (67°F). The precipitation in November is slightly lower at 48 mm (1.9 in), but it occurs over more days, about 11 in total, and the humidity is even higher at 91%.

For more detailed information, check out Adenau weather in November.

September typically experiences warmer weather compared to December, with temperatures ranging from a minimum of 1°C (35°F) to a maximum of 32°C (89°F) and an average of 15°C (58°F). This month sees relatively low precipitation at 53 mm (2.1 in) over about 8 days, accompanied by a humidity level of 81%. In contrast, December brings colder temperatures, with a minimum of -5°C (23°F), an average of 4°C (39°F), and a maximum of 14°C (57°F). It also sees higher precipitation at 90 mm (3.5 in) spread over 17 days, with humidity increasing to 92%. For more details on December's weather, you can check Adenau weather in December.

Compare Adenau's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Adenau

September in Adenau marks a shift from the summer heat, offering a delightful mix of mild temperatures and occasional rainfall. With an average temperature hovering around a comfortable 15°C, it stands out as a transition month, bridging the warmth of summer and the cooler embrace of autumn. The humidity lingers at a notable 81%, lending an atmospheric richness to the landscape, while rainfall occurs on about eight days, bringing vibrant greenery and a fresh, crisp feel to the environment. Compared to the scorching highs of August and the biting cold of winter months, September provides a refreshing reprieve, perfect for those looking to enjoy nature’s beauty. For more insights into the climate of this charming region, visit Adenau Climate.