Last updated: February 26, 2025
September in Flensburg, Germany showcases a dynamic climate, with maximum temperatures reaching a warm 27°C (81°F), while average temperatures settle around a mild 14°C (58°F). As the month progresses, the minimum temperature can dip to a brisk 3°C (38°F). Rainfall is moderate, accumulating to 71 mm (2.8 in) over 12 days, contributing to the region’s lush greenery. Despite the wet days, the humidity remains high at 84%, creating a characteristic coastal feel. Whether you're exploring the charming streets or enjoying the natural surroundings, September offers a blend of warmth and refreshing breezes, making Flensburg an intriguing destination this season.
As September unfolds in Flensburg, Germany, the temperatures shift gently, showcasing the onset of autumn. With a minimum temperature of 3°C (38°F) and an average of 14°C (58°F), the month offers a refreshing transition from the summer heat. The days can still warm up nicely, reaching a maximum of 27°C (81°F), allowing residents and visitors to enjoy the lingering warmth of late summer. This gradual cooling trend highlights the city's climatic changes, as it moves from the peak temperatures of August while still providing ample opportunities for outdoor activities and scenic strolls. As October approaches, the crispness in the air hints at the cooler days ahead, making September a beautiful and dynamic month in Flensburg.
September in Flensburg, Germany, experiences a noteworthy balance of precipitation as it records 71 mm (2.8 in) of rain over 12 days. This level is slightly below the late-summer peaks seen in August, where the city absorbed 82 mm (3.2 in) across 15 rainy days. As autumn approaches, September acts as a transition, reflecting a drop from the vibrant summer storms while still lingering with moody, cloudy days. This steady rainfall prepares the landscape for the wetter October ahead, which typically sees an increase to 91 mm (3.6 in), hinting at the seasonal shift that brings both cooler air and substantial showers.
In Flensburg, Germany, September marks a transitional point in humidity levels as the summer heat begins to wane. With an average humidity of 84%, the month experiences a noticeable increase from the drier conditions of June and July, which enjoyed lower humidity levels of 75% and 76%, respectively. This slight uptick signals the approach of autumn, as moisture begins to creep back into the air, setting the stage for the wetter months ahead. It's fascinating to observe how the humidity gradually rises again, peaking in the late fall and winter months, effectively echoing the seasonal shifts in the region’s weather patterns.
In September, Flensburg experiences a moderate UV Index of 5, similar to the levels seen in April and October. This signifies a moderate exposure category, allowing for about 30 minutes of sun before any risk of skin burning occurs. As the summer months fade away, there's a noticeable dip from the very high levels of June and the high readings in July and August. This trend illustrates a gradual transition towards safer sun exposure, making it an ideal time for outdoor activities without the intense risk of sunburn. For more detailed information on UV levels throughout the year, explore the Flensburg UV Index.
UV Risk Categories
September in Flensburg, Germany offers a delightful transition as summer winds down, boasting 315 hours of sunshine—a comforting embrace after the sun-drenched July and June, which together bask in the glow of over 400 hours each. While September shines brightly, it does reveal the inevitable shift towards autumn, with daylight gradually dimming compared to the lively August. This month serves as a reminder of the sunny days behind and the cozy evenings ahead, providing a perfect backdrop for enjoying the changing leaves and the warmth of both nature and gatherings. As the year progresses into October, Flensburg sees a notable drop to 248 hours, indicating that each ray of September's sun becomes even more precious as it nears the end of summer’s embrace.
In Flensburg, Germany, September brings a 28% chance of sunny weather, reflecting a noticeable dip from the brighter days of summer. As the year transitions from the vibrant warmth of August, which enjoys a 35% likelihood of sunshine, September continues this moderate trend, slightly below the seasonal average. This pattern can be traced back to the gradual shift towards autumn, where the sunshine begins to wane, following the peak of daylight witnessed in earlier months. While the chances for sun aren’t as robust as in the spring—where April boasts 49%—September still offers a reasonable chance for pleasant weather, inviting locals and visitors alike to savor those fleeting sunny days before the colder months set in.
In Flensburg, Germany, September marks a transition as daylight begins to wane, offering around 12 hours of bright illumination. Following the sun-drenched heights of summer, where days stretched to a generous 17 hours in June, September reflects a subtle shift towards autumn. This month showcases 16 hours in May and 14 hours in August, exemplifying a gradual decline as the days shorten. The contrast is striking as we move toward the winter months of October and November, where daylight further reduces to 10 hours and 8 hours, respectively. This rhythmic pattern of daylight durations not only highlights the seasonal changes but also invites residents and visitors in Flensburg to embrace the softer, golden hues of early fall.
As summer transitions into autumn, September in Flensburg, Germany experiences a gentle breeze, with an average wind speed of 3.6 m/s (8 mph). This marks a subtle decline from the peak winds of late summer, creating a tranquil atmosphere perfect for leisurely walks along the waterfront. The wind patterns throughout the year reveal an interesting trend: while winter months tend to pick up speed, notably with an average of 4.6 m/s (10 mph) in October, the early fall brings a calming reprieve. The consistency in wind speeds during spring and early summer, hovering just above 4 m/s, gives way to the softer, quieter winds of September, hinting at the serene, reflective mood of the season as the city prepares for the cooler months ahead.
The weather in Flensburg 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 Flensburg and find detailed weather information for every month.
September and January present stark contrasts in weather conditions. September boasts a milder temperature range, with minimums around 3°C (38°F), averaging 14°C (58°F), and peaking at 27°C (81°F), accompanied by relatively high humidity at 84%. In contrast, January experiences much colder temperatures, dipping to a minimum of -9°C (16°F) and averaging only 3°C (38°F), with a maximum of 12°C (54°F). While both months see precipitation on approximately 12 days, January offers slightly less rainfall at 55 mm (2.2 in), compared to September's 71 mm (2.8 in). The humidity in January is also higher at 89%. For more detailed insights about the weather in January, you can visit Flensburg weather in January.
September and February present quite contrasting weather patterns. In September, temperatures range from a pleasant minimum of 3°C (38°F) to a warm maximum of 27°C (81°F), resulting in an average of 14°C (58°F). The month sees a fair amount of rainfall, totaling 71 mm (2.8 in) over 12 days, with a humidity level of 84%. In contrast, February experiences significantly colder conditions, with temperatures dropping as low as -15°C (5°F) and only reaching a maximum of 15°C (59°F), leading to a much lower average of 3°C (38°F). The precipitation is slightly less at 63 mm (2.5 in), spread over the same number of days, while humidity rises to 88%. For more detailed insights, you can check out Flensburg weather in February.
In comparing the weather between September and March, we see notable differences in temperature and overall climate conditions. September generally experiences a milder temperature range with minimums of 3°C (38°F) and maximums reaching 27°C (81°F), while March starts off colder, with minimums plummeting to -9°C (15°F) and a maximum of 16°C (60°F). Despite a similar amount of precipitation—71 mm (2.8 in) in September and 70 mm (2.8 in) in March—March tends to be slightly wetter, with precipitation occurring on 13 days compared to 12 days in September. Additionally, humidity is higher in March at 87%, compared to 84% in September. For more detailed information about the weather in March, you can visit Flensburg weather in March.
When comparing the weather in September and April, several key differences become apparent. In September, temperatures range more widely, with a minimum of 3°C (38°F), an average of 14°C (58°F), and a maximum of 27°C (81°F). In contrast, April sees cooler conditions, starting with a minimum of -3°C (26°F) and averaging only 8°C (46°F), though it can reach up to 23°C (75°F) on warmer days. Precipitation also varies, with September experiencing 71 mm (2.8 in) over 12 days, while April has only 41 mm (1.6 in) across 9 days. Both months share the same humidity level of 84%, making them relatively damp periods of the year. For more specific information on April weather, you can visit Flensburg weather in April.
When comparing the weather in September and May, both months exhibit relatively mild conditions, but with distinct differences. September boasts a wider temperature range, with minimums reaching 3°C (38°F) and maximums climbing to 27°C (81°F), while May features a slightly cooler minimum of -1°C (31°F) and a maximum of 26°C (79°F). Despite similar average rainfall—71 mm (2.8 in) in September and 70 mm (2.8 in) in May—both months share an average of 12 days of precipitation. Furthermore, September tends to be a bit more humid at 84%, compared to May's 79% humidity level, contributing to the overall feel of the seasons. For more details, you can check Flensburg weather in May.
September weather tends to be cooler than June, with average temperatures ranging from a minimum of 3°C (38°F) to a maximum of 27°C (81°F), compared to June's temperatures of 5°C (42°F) to 30°C (87°F). While September sees an average of 14°C (58°F), June's average is a bit warmer at 17°C (62°F). Additionally, September experiences slightly more precipitation, with 71 mm (2.8 in) over 12 days, in contrast to June's 58 mm (2.3 in) over 10 days. Humidity levels are also higher in September at 84%, while June has a more comfortable 75%. For more details, you can check out Flensburg weather in June.
In comparing the weather between September and July, notable differences emerge. September experiences cooler temperatures with a minimum of 3°C (38°F) and an average of 14°C (58°F), while July offers warmer conditions with a minimum of 7°C (45°F) and an average of 17°C (63°F). The maximum temperature in September reaches 27°C (81°F), compared to July's higher maximum of 31°C (88°F). Additionally, September sees about 71 mm (2.8 in) of precipitation over 12 days, slightly less than July's 80 mm (3.2 in) across 13 days, though September has a higher humidity level of 84% compared to July's 76%. For more detailed insights on July weather, you can explore Flensburg weather in July.
In comparing the weather between August and September, September experiences cooler temperatures, with a minimum of 3°C (38°F) compared to August's minimum of 7°C (44°F). The average temperature also drops from 18°C (64°F) in August to 14°C (58°F) in September, while the maximum temperature sees a significant decrease from 33°C (91°F) in August to 27°C (81°F) in September. Precipitation is slightly lower in September at 71 mm (2.8 in) over 12 days, compared to August's 82 mm (3.2 in) over 15 days. Additionally, humidity is higher in September at 84%, whereas August has a more comfortable average of 77%. For more detailed weather information about August, you can visit Flensburg weather in August.
September generally presents milder temperatures, with a minimum of 3°C (38°F) and an average of 14°C (58°F), peaking at a comfortable 27°C (81°F). However, as the season shifts to October, temperatures drop, reaching a minimum of -2°C (29°F) and an average of 11°C (52°F), with a maximum of 24°C (75°F). Additionally, October sees an increase in precipitation, totaling 91 mm (3.6 in) over 15 days, compared to September's 71 mm (2.8 in) over 12 days. Humidity also rises slightly from 84% in September to 87% in October. For more detailed insights, check Flensburg weather in October.
In September, the weather typically showcases a wider range of temperatures, with minimums around 3°C (38°F) and maximums reaching up to 27°C (81°F). The average temperature hovers at 14°C (58°F), accompanied by 71 mm (2.8 in) of precipitation spanning 12 days, while humidity remains at a relatively comfortable 84%. Conversely, November brings a noticeable chill, with minimum temperatures dipping to -2°C (29°F) and an average of just 7°C (44°F). The maximum temperature in November reaches 17°C (64°F), and precipitation is slightly lower at 55 mm (2.2 in) over the same number of days, with humidity increasing to 88%. For more detailed weather insights, you can check Flensburg weather in November.
September and December present contrasting weather conditions. In September, temperatures range from a pleasant minimum of 3°C (38°F) to a maximum of 27°C (81°F), with an average of 14°C (58°F). The month sees a fair amount of rainfall, with 71 mm (2.8 in) over approximately 12 days and a humidity level of 84%. In contrast, December is much colder, with temperatures dropping to a minimum of -11°C (13°F) and only reaching a maximum of 11°C (53°F), averaging around 4°C (40°F). Although precipitation is slightly lower at 66 mm (2.6 in) across 14 days, humidity rises to 87%. For more details, check out Flensburg weather in December.
As summer transitions into autumn, September in Flensburg brings a notable shift in weather patterns compared to the balmy summer months. With cooler temperatures and a higher humidity level, the air carries a refreshing crispness, setting the stage for early fall. The month is marked by occasional rainfall, resulting in approximately 12 wet days, which adds to the overall moody ambiance of this beautiful coastal city. While the days might still witness some warmth, the cool evenings remind us that winter is just around the corner. For further insights into how the weather evolves throughout the year, explore the complete Flensburg Climate details.