September Weather in Dahlem, Germany

Last updated: February 26, 2025

In Dahlem, Germany, September showcases a captivating blend of weather patterns, with maximum temperatures soaring to 31°C (87°F), while the average hovers around 14°C (57°F), and minimums can dip to 2°C (35°F). This month experiences a moderate precipitation total of 71 mm (2.8 in) over approximately 11 days, contributing to an humidity level of 81% that envelops the area in a refreshing, albeit moist atmosphere. As summer transitions into autumn, visitors can expect an intriguing mix of warmth and coolness, making September a unique time to experience Dahlem’s natural beauty.

September Temperature in Dahlem

In Dahlem, Germany, September marks a notable transition in temperatures as summer gives way to the embrace of autumn. With average temperatures settling around 14°C (57°F), the month brings a refreshing shift from the heat of the preceding summer. Mornings can be brisk, with lows dipping to about 2°C (35°F), while the milder afternoons can still reach a warm 31°C (87°F), showcasing the lingering warmth of the season. As daylight hours wane, this blend of cooler nights and pleasant days sets the stage for a picturesque fall landscape, inviting residents and visitors alike to enjoy the vibrant changing foliage and outdoor activities before the chill of winter begins to take hold.

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

The chart illustrates September temperature patterns in Dahlem, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec343741475362636356504137
Data source: Temperature data for Dahlem 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 Dahlem

In September, Dahlem, Germany experiences a decline in precipitation compared to the summer months, receiving an average of 71 mm (2.8 in) over 11 days of rainfall. This marks a noticeable decrease from both July and August, which feature higher averages of 103 mm (4.0 in) and 95 mm (3.8 in) respectively, as the region transitions into autumn. Despite this drop, September retains a moderate level of moisture, setting the stage for the cooler, wetter months ahead. As the year progresses, the amount of rainfall tends to fluctuate, with October bringing 76 mm (3.0 in), hinting at a gradual uptick in precipitation as Dahlem prepares for winter’s arrival.

September Precipitation Trends in Dahlem

The chart displays monthly precipitation patterns in Dahlem, 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.
JanFebMarAprMayJunJulAugSepOctNovDec827690489510210395717660110
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Dahlem

September sees a noticeable uptick in humidity in Dahlem, Germany, rising to 81% after the drier summer months of July and August, which recorded 72% and 71% respectively. This shift marks a transition from the warm season to the impending autumn, as humidity levels gradually climb toward the year's end, peaking again in winter with 91% in January and 92% in December. The pattern reveals a clear seasonal trend: while summers are somewhat drier, the arrival of fall brings a refreshing increase in moisture, hinting at the cozy indoor ambiance that defines the later months of the year. Thus, September serves as a bridge, inviting a return to higher humidity while still embracing the fading warmth of summer.

September Average Humidity in Dahlem

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

As summer transitions into autumn, the UV Index in Dahlem, Germany drops to 6 in September, categorizing sun exposure as high. This indicates a shift from the very high levels experienced in the peak summer months, where careful sun protection was essential due to a burn time of just 15 minutes in June and July. In contrast, September allows for a slightly longer safe exposure time of 25 minutes, offering a comfortable balance for outdoor activities. However, it's still vital to remain cautious and protect your skin when spending time outside. For more detailed insights, check out the Dahlem UV Index.

Maximum UV Index Levels in Dahlem for September

The chart shows the monthly maximum UV Index (UVI) for Dahlem 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: Dahlem 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 Dahlem

September in Dahlem, Germany, brings a delightful transition as summer begins to wane, showcasing 315 hours of sunlight. This vibrant month follows the peak of July and August, where residents basked in 408 and 378 hours respectively. As the days shorten, September still offers a significant amount of sunshine, contributing to a warm, lingering summer feel. Compared to the earlier months, the decline in sunlight is notable, dropping from the highs of 390 hours in May and 403 hours in June. This gradual tapering not only signals the approach of autumn but also invites a cozy ambiance, making it an ideal time for enjoying outdoor activities amidst the fading summer glow.

Monthly Sunshine Duration in Dahlem: September Highlighted

The September sunshine duration represents the total number of hours Dahlem 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.
JanFebMarAprMayJunJulAugSepOctNovDec111h201h265h348h390h403h408h378h315h234h179h121h
Data source: Dahlem September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Dahlem During September

As summer fades into autumn, Dahlem, Germany experiences a notable shift in its weather patterns. In September, the chance of sunny weather stands at 37%, which marks a moderate increase from the summer months of July and August, both hovering around 30%. This uptick suggests that while September may not boast the same level of sunny days as the peak spring months, it still offers a decent opportunity for residents and visitors to soak in some late summer rays. Overall, September strikes a balance, presenting a relatively promising chance for outdoor activities before the more overcast months of autumn take hold.

Percentage of Sunny Days in September in Dahlem

The chart illustrates the percentage of sunny days in Dahlem 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 Dahlem experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec7%31%39%41%28%30%30%28%37%27%20%11%
Data source: Dahlem September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Dahlem in September

In Dahlem, Germany, September brings a transition from the long, sun-drenched days of summer, with nearly 16 hours of daylight in June, to the shorter 12 hours that mark the start of autumn. As the month unfolds, daylight gradually diminishes, echoing the rhythmic ebb and flow of seasonal change. This decline follows a consistent pattern, peaking in late spring and summer, where May and June boast the year's brightest days. By September, while still enjoying considerable daylight, residents can sense the impending shift toward the cozy, darker months of fall, which will soon settle into the diminished daylight of October and beyond. The seasonal dance of light in Dahlem provides a captivating backdrop, inviting both reflection and appreciation of nature's yearly cycle.

Average Daylight Hours in Dahlem for September

The chart illustrates the variation in daylight duration in Dahlem throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 32m10h 3m11h 55m13h 50m15h 29m16h 21m15h 53m14h 24m12h 33m10h 40m8h 58m8h 3m
Data source: Dahlem daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Dahlem

As the vibrant summer days fade into the gentle embrace of autumn, September in Dahlem, Germany, ushers in a notable shift in wind patterns. The average wind speed drops to a tranquil 2.7 m/s (6 mph), mirroring the stillness of the season. Following a slightly breezier August, where winds danced at 3.6 m/s (8 mph), this serene interlude marks September as the calm before the more blustery October, which lifts back up to 4.6 m/s (10 mph). Overall, the trend reveals a gradual windspeed decline through the warmer months, before a resurgence in the autumn chill. This transition serves as a reminder of nature's rhythmic cycles, inviting residents and visitors alike to appreciate the softer breezes that herald the coming of fall.

Average September Wind Speed in Dahlem

The chart displays monthly wind speed patterns in Dahlem, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.54.54.13.54.52.73.33.62.7 m/s4.63.44.2
Data source: Dahlem September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Dahlem Compares to Other Months

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

September and January showcase a stark contrast in weather conditions. In September, temperatures display a broader range, with a minimum of 2°C (35°F) and a maximum reaching 31°C (87°F), averaging 14°C (57°F). The month experiences 71 mm (2.8 in) of precipitation over approximately 11 days, coupled with relatively high humidity at 81%. In contrast, January is characterized by much colder temperatures, with a minimum of -13°C (10°F) and a maximum of only 12°C (53°F), averaging just 1°C (34°F). Precipitation in January is slightly higher at 82 mm (3.2 in) and occurs over about 14 days, with humidity peaking at 91%. For more detailed insights, you can check out the Dahlem weather in January.

September and February present distinctly different weather conditions. In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 31°C (87°F), with an average of 14°C (57°F) and a moderate level of rainfall at 71 mm (2.8 in) over about 11 days. The humidity is relatively high at 81%, giving the month a warm, late-summer feel.

In contrast, February experiences much colder temperatures, with a minimum of -13°C (10°F) and a maximum of 19°C (66°F), averaging around 3°C (37°F). Precipitation slightly increases to 76 mm (3.0 in) over 12 days, and the humidity reaches a higher level of 90%, contributing to a distinctly wintery atmosphere. For a detailed look at February conditions, you can visit Dahlem weather in February.

In comparing the weather between September and March, it's clear that March tends to be significantly cooler, with average temperatures ranging from a minimum of -14°C (7°F) to a maximum of 21°C (70°F), whereas September enjoys a much warmer climate with a range from 2°C (35°F) to 31°C (87°F). Additionally, March experiences a higher level of humidity at 87%, compared to September's 81%. Precipitation is also more frequent in March, falling on about 16 days with a total of 90 mm (3.5 in), versus September, which receives 71 mm (2.8 in) across 11 days. For further details on the weather in March, you can visit Dahlem weather in March.

When comparing the weather in September and April, notable differences emerge. September typically boasts a warmer temperature range, with minimums of 2°C (35°F) and maximums reaching 31°C (87°F), while April experiences colder conditions with minimums dropping to -7°C (20°F) and maximums peaking at 25°C (77°F). Precipitation levels are higher in September at 71 mm (2.8 in) over 11 days, compared to April's 48 mm (1.9 in) over the same number of days. Humidity is similar, with September at 81% and April slightly higher at 84%. For a closer look at April weather, you can visit Dahlem weather in April.

In comparing the weather patterns of September and May, we observe notable differences in temperature and precipitation. September typically showcases a wider temperature range, with a minimum of 2°C (35°F) and a maximum reaching up to 31°C (87°F), averaging around 14°C (57°F). In contrast, May experiences slightly cooler temperatures, beginning at a minimum of -1°C (30°F), peaking at 29°C (85°F), and averaging 12°C (53°F). When it comes to precipitation, May is generally wetter, with 95 mm (3.7 in) across 15 days, compared to September's 71 mm (2.8 in) over 11 days. Despite this, September's higher humidity at 81% suggests a muggier feel compared to May's 77%. For more specifics on May's weather, check out Dahlem weather in May.

When comparing the weather in September and June, we observe notable differences in temperature and precipitation patterns. September generally features a broader temperature range, with minimums dipping to 2°C (35°F) and maximums reaching 31°C (87°F), while June maintains a milder minimum of 6°C (43°F) and a similar maximum of 31°C (88°F). Precipitation is more prevalent in June, totaling 102 mm (4.0 in) over 14 days compared to September's 71 mm (2.8 in) across 11 days. Humidity levels are also higher in September at 81%, compared to June's 74%. For more detailed information, you can check Dahlem weather in June.

The weather in September shows a wider temperature range compared to July, with minimums dropping to 2°C (35°F) and maximums reaching 31°C (87°F), while July maintains milder minimums of 6°C (43°F) and higher maximums of 36°C (97°F). In terms of humidity, September is more humid at 81%, compared to July's 72%. Rainfall in September is also significant, with 71 mm (2.8 in) over 11 days, though it's less than the 103 mm (4.0 in) experienced in July over 14 days. For a closer look at July weather specifics, check out Dahlem weather in July.

In September, the weather generally cools down compared to August, with minimum temperatures dropping to 2°C (35°F) and average temperatures around 14°C (57°F), while August sees a minimum of 5°C (41°F) and an average of 17°C (63°F). The maximum temperatures in September reach up to 31°C (87°F), slightly lower than August's peak of 33°C (92°F). Precipitation also lessens in September, totaling 71 mm (2.8 in) over 11 days compared to August's 95 mm (3.8 in) over 18 days. Additionally, September has higher humidity at 81%, while August sits at a more comfortable 71%. For a more detailed look at August weather, check out Dahlem weather in August.

September and October present a distinct shift in weather patterns. In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 31°C (87°F), averaging around 14°C (57°F), while October sees cooler temperatures, with a minimum of -1°C (31°F) and a maximum of 23°C (74°F), averaging at 10°C (50°F). Precipitation is slightly higher in October, with 76 mm (3.0 in) recorded over 14 days compared to September's 71 mm (2.8 in) over 11 days, indicating a wetter month ahead. Additionally, October experiences increased humidity at 88%, up from September's 81%. For a detailed look at the weather conditions in that month, you can visit Dahlem weather in October.

In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 31°C (87°F), with an average of 14°C (57°F). The month experiences relatively high humidity at 81% and sees around 71 mm (2.8 in) of precipitation over 11 days. In contrast, November brings colder weather, with temperatures dropping to a minimum of -5°C (24°F) and peaking at 17°C (64°F), averaging just 5°C (41°F). Despite slightly lower precipitation totals of 60 mm (2.3 in) over 12 days, the humidity increases to 91%, contributing to a much chillier atmosphere. For more details on November's weather, you can check out this link: Dahlem weather in November.

In September, temperatures range from a cool 2°C (35°F) at night to a warm 31°C (87°F) during the day, with an average of 14°C (57°F). The month sees about 71 mm (2.8 in) of precipitation over 11 days, and humidity levels are relatively high at 81%. In contrast, December brings much cooler weather, with temperatures ranging from a frigid -5°C (23°F) to a maximum of 13°C (56°F), averaging just 3°C (38°F). This month typically experiences higher precipitation levels at 110 mm (4.3 in), spread over 19 days, along with even greater humidity at 92%. For more detailed insights into December weather, check out Dahlem weather in December.

Compare Dahlem's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Dahlem

As September arrives in Dahlem, the transition from the warm embrace of summer to the cool whispers of autumn becomes palpable. This month offers a pleasant mix of temperatures, with highs reaching a delightful 31°C (87°F) while averaging a cooler 14°C (57°F). Unlike the drier summer months, September experiences increased precipitation, with rain falling on approximately 11 days, contributing to a relatively high humidity of 81%. These shifts invite a refreshing change in the landscape and a chance to embrace the vibrant colors of fall. For a comprehensive understanding of the yearly weather patterns, visit Dahlem Climate.