Last updated: February 26, 2025
In Darmstadt, Germany, September showcases a diverse climate, with temperatures ranging from a pleasant average of 16°C (61°F) to a peak of 32°C (90°F), while dipping to a refreshing low of 4°C (39°F). This month experiences 53 mm (2.1 in) of rainfall over approximately 7 days, contributing to a notable humidity level of 85%. Whether you're basking in warm sunshine or enjoying the crisp fall air, September in Darmstadt offers a vibrant blend of weather dynamics, perfect for outdoor exploration and seasonal transitions.
In September, Darmstadt, Germany, begins to transition from the summer warmth to the cooler autumn days. With minimum temperatures starting at 4°C (39°F) and peaking at a comfortable 32°C (90°F), the month offers a pleasant average of 16°C (61°F), perfect for outdoor activities. This variation signifies a gradual shift, as the maximum temperatures start to decline from the late summer highs seen in August, while still allowing for those lingering sunny days. As daylight shortens and autumn approaches, September in Darmstadt invites both locals and visitors to enjoy the gentle warmth before the cooler months set in.
In September, Darmstadt experiences a noticeable shift in precipitation patterns, with rainfall totaling 53 mm (2.1 in) over seven days. This marks a decline from the wetter summer months, particularly July and August, which saw an average of 63 mm and 58 mm respectively. September’s precipitation is significantly lower than the monthly peak of 120 mm in December, indicating a gradual transition into the drier autumn season. As the leaves begin to change, the gentler rains of September offer a refreshing respite, perfectly balancing the lingering warmth of late summer while hinting at the wetter months that lie ahead.
In September, Darmstadt experiences a humidity level of 85%, which marks a slight increase from the summer months. The trend for the year showcases a gradual decrease in humidity from a peak in January at 91% to a low of 79% in May, creating a more comfortable atmosphere during the spring. As autumn approaches, humidity begins to rise again, foreshadowing the wetter months ahead. This increase in September is a subtle reminder that the refreshing breezes of summer are giving way to the more humid conditions typical of fall, setting the stage for a shift toward higher humidity levels as the year progresses.
As September unfolds in Darmstadt, Germany, the UV Index starts to reflect a transition towards cooler autumn days. With a UV Index of 6, categorized as high, sunseekers need to be mindful of their exposure, as burn time is limited to 25 minutes. This marks a notable drop from the peak summer months, where the Index consistently hovered at 8. However, compared to earlier months like April, where the Index was 6 and burn time was just 25 minutes, September maintains a similar intensity. Overall, while the sun's rays remain potent, the gradual decline in UV levels signals a shift in the season. For more insights on UV exposure and safety, check out Darmstadt UV Index.
UV Risk Categories
As the year progresses in Darmstadt, Germany, the sun gradually becomes a more generous companion, particularly notable in September with its 321 sunshine hours. This month stands as a bright transition between the peak summer months of July and August, which boast 413 and 385 hours respectively, and the cooler autumn days of October with 258 hours. Overall, from the depths of winter in January—where the sun only graces the city for 118 hours—to the vibrant blooms of May with 386 hours, it’s clear that sunshine steadily increases, peaking in the heart of summer. September, with its pleasant warmth and shorter days, serves as a wonderful reminder of the fleeting summer while hinting at the cozy charm of fall that lies ahead.
As summer transitions into autumn, September in Darmstadt, Germany features a notable 43% chance of sunny weather, marking it as one of the more favorable months for sunshine. This aligns with a gradual upward trend from the previous months, as the likelihood of sunny days peaks in early fall compared to the lower percentages witnessed in the winter and late summer. Following a dip in August, where the chance of sun drops to 29%, September's weather starts to hint at a balance between lingering warmth and the onset of cooler days. Overall, September is characterized by a promising blend of mild weather and sunny spells, appealing to those looking to enjoy the outdoors before the chill of autumn sets in.
As summer fades into autumn, September in Darmstadt, Germany sees a gentle decline in daylight hours, averaging 12 hours of sunshine each day. This follows the peak brightness of June, when the sun graces the city for a remarkable 16 hours, signaling the height of summer. As the months transition, the days gradually shorten, moving from the lush 15 hours of daylight in July to 14 hours in August, before settling into a more subdued rhythm in September. This pattern highlights nature's cyclical dance, reminding residents of the approaching cooler months while still offering ample time to enjoy the early autumn landscapes. The shift to October, with only 10 hours of daylight, emphasizes the fleeting beauty of September as it ushers in the change of seasons.
As September rolls into Darmstadt, Germany, the winds slow down, presenting an average breeze of 2.1 m/s (5 mph). This marks the tail end of a gentle decline in wind speed that started in the summer months, where higher averages of around 2.5 to 3.6 m/s were common. The transition into autumn typically ushers in a calmer atmosphere, aligning with the overall trend of diminishing breezes as the year progresses. Following the busyness of summer, September's softer winds invite a sense of tranquility, encouraging residents and visitors alike to embrace the seasonal shift with leisurely strolls through the city's picturesque parks and gardens.
The weather in Darmstadt 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 Darmstadt and find detailed weather information for every month.
September weather showcases a wide range of temperatures, with minimums around 4°C (39°F) and maximums reaching up to 32°C (90°F), while the average hovers at a comfortable 16°C (61°F). Despite the warm temperatures, September experiences 53 mm (2.1 in) of precipitation over about 7 days, along with a high humidity level of 85%.
In contrast, January brings a much colder climate, with minimum temperatures plunging to -12°C (10°F) and a chilly average of 2°C (36°F). The maximum temperature barely reaches 13°C (56°F). It's also a wetter month, with 72 mm (2.8 in) of rain spread over 13 days and an increased humidity of 91%. For more detailed insights, you can check out Darmstadt weather in January.
September and February present strikingly different weather conditions. In September, temperatures range from a minimum of 4°C (39°F) to a maximum of 32°C (90°F), with an average of 16°C (61°F). However, February is much colder, with temperatures dipping to a minimum of -11°C (13°F) and only reaching a maximum of 18°C (65°F), averaging just 4°C (39°F). Precipitation also varies, with September experiencing 53 mm (2.1 in) over 7 days, while February sees slightly more at 65 mm (2.6 in) across 11 days. Additionally, humidity levels are a bit higher in February at 89%, compared to 85% in September. For more details on the weather in February, be sure to check Darmstadt weather in February.
In comparing the weather between September and March, we observe notable differences in temperature and precipitation. September boasts warmer temperatures, with averages around 16°C (61°F) and highs reaching up to 32°C (90°F), while March experiences much cooler conditions, with average temperatures hovering around 6°C (44°F) and lows dipping down to -10°C (14°F). Additionally, March tends to be wetter, receiving 85 mm (3.3 in) of rainfall over 14 days, in contrast to September’s 53 mm (2.1 in) over just 7 days. Both months experience high humidity, with September at 85% and March slightly higher at 87%. For a deeper insight into the March weather, you can check Darmstadt weather in March.
September and April present notably different weather patterns in Darmstadt. In September, temperatures range from a minimum of 4°C (39°F) to a maximum of 32°C (90°F), with an average of 16°C (61°F). The month experiences higher humidity at 85% and more precipitation, totaling 53 mm (2.1 in) over 7 days. In contrast, April typically sees cooler temperatures, with a minimum of -4°C (25°F) and a maximum of 27°C (80°F), averaging around 10°C (51°F). The level of precipitation in April is slightly lower at 36 mm (1.4 in) but maintains a similar frequency of rainy days at 7, accompanied by a humidity level of 83%. For more detailed information, you can check Darmstadt weather in April.
In September, weather in Darmstadt tends to experience a wider temperature range with minimums dipping to 4°C (39°F) and maximums reaching 32°C (90°F). The month averages a pleasant 16°C (61°F), but with a higher humidity level of 85%. Precipitation is moderate, with rainfall on about 7 days totaling 53 mm (2.1 in). In contrast, May begins with cooler minimum temperatures at 0°C (32°F) and slightly lower daily averages of 14°C (57°F), while still approaching high temperatures of up to 31°C (89°F). May is wetter, with 84 mm (3.3 in) of precipitation spread across 12 days, yet it enjoys lower humidity at 79%. For more details on May weather, visit Darmstadt weather in May.
In September, the weather tends to be milder, with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 32°C (90°F) and an average of 16°C (61°F). The month sees about 53 mm (2.1 in) of precipitation over 7 days, coupled with relatively high humidity levels at 85%.
In contrast, June experiences warmer temperatures, with a minimum of 7°C (45°F), an average of 19°C (67°F), and a maximum reaching up to 36°C (97°F). However, it also has higher precipitation, averaging 87 mm (3.4 in) over 11 days, while humidity is slightly lower at 82%.
For more detailed insights on June's climate, you can check out Darmstadt weather in June.
In comparing the weather of September and July, September tends to have a broader temperature range, with minimums reaching as low as 4°C (39°F) and maximums climbing to 32°C (90°F), while July offers warmer averages and highs, ranging from a minimum of 8°C (47°F) to a maximum of 39°C (102°F). While July experiences slightly more precipitation at 63 mm (2.5 in) over about 10 days, September sees a total of 53 mm (2.1 in) across 7 days. Humidity levels are similar in both months, with September at 85% and July slightly lower at 83%. For more detailed insights, you can refer to Darmstadt weather in July.
In comparing the weather from September to August, September experiences cooler temperatures overall, with a minimum of 4°C (39°F), an average of 16°C (61°F), and a maximum of 32°C (90°F). In contrast, August boasts warmer temperatures, featuring a minimum of 7°C (44°F), an average of 20°C (69°F), and a maximum of 36°C (97°F). Both months see considerable precipitation, but August is slightly wetter with 58 mm (2.3 in) over 12 days compared to September's 53 mm (2.1 in) over 7 days. Humidity levels are fairly similar, with September at 85% and August slightly lower at 84%. For more detailed insights, you can check out Darmstadt weather in August.
September and October exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 4°C (39°F) to a maximum of 32°C (90°F), with an average of 16°C (61°F). The month experiences less precipitation, totaling 53 mm (2.1 in) over 7 days, and is characterized by a humidity level of 85%. In contrast, October sees lower temperatures, with a minimum of 2°C (35°F) and a maximum of 26°C (80°F), along with an average temperature of 11°C (53°F). Rainfall increases to 68 mm (2.7 in) spread across 12 days, while humidity rises modestly to 88%. The transition from September to October brings cooler weather and more frequent rain. For more details, check out the Darmstadt weather in October.
September and November present contrasting weather conditions. In September, temperatures range from a minimum of 4°C (39°F) to a maximum of 32°C (90°F), with an average of 16°C (61°F) and relatively low precipitation at 53 mm (2.1 in) over approximately 7 days, coupled with a humidity level of 85%. In contrast, November sees colder temperatures with a minimum of -4°C (25°F) and a maximum of 21°C (70°F), averaging around 6°C (43°F). Precipitation slightly increases to 55 mm (2.2 in) over about 10 days, while humidity rises to 89%. For more details on November weather, visit Darmstadt weather in November.
September and December exhibit stark contrasts in weather patterns. September typically experiences mild temperatures, with a minimum of 4°C and an average of 16°C, while highs can soar to 32°C. The month sees relatively low precipitation, averaging 53 mm over about 7 days, and humidity levels hover around 85%. In contrast, December ushers in much colder conditions, where temperatures can drop to a minimum of -6°C, with an average of only 4°C and a maximum of 14°C. This month also brings increased precipitation, totaling 120 mm across 19 days, and humidity rises slightly to 91%. For a closer look at what December weather entails, visit Darmstadt weather in December.
As summer gently gives way to autumn, September in Darmstadt showcases a remarkable transition in weather. The days may start off with maximum temperatures reaching up to 32°C, inviting the last bursts of warm sunshine, yet they are quickly tempered by cooler evenings where temperatures can dip to a brisk 4°C. With an average temperature of 16°C, September stands out as a month of mild and enjoyable weather, perfect for outdoor explorations. While precipitation remains relatively low with just 53 mm over seven days, the high humidity level of 85% can make the air feel damp at times, especially with the changing leaves signaling the oncoming season. This blend of warmth and coolness sets September apart from other months in Darmstadt, making it a delightful time to experience the beauty of the region. For more insights into the city's overall climatic trends, visit Darmstadt Climate.