Last updated: October 30, 2025
Experience the September weather in Roskilde, Denmark, where the days begin to cool while still offering glimpses of warmth. With maximum temperatures reaching 27°C (80°F) and an average of 14°C (58°F), there's a comfortable mix for outdoor enthusiasts. However, as autumn approaches, evenings can be brisk, dipping to a minimum of 3°C (37°F). Expect an average precipitation of 75 mm (3.0 in) over 12 days, creating a lush environment punctuated by gentle rain. The humidity levels hover around a notable 83%, adding a refreshing chill to the air, particularly during those softer, drizzle-laden days. Overall, September showcases Roskilde’s transition from summer warmth to autumn charm.
As September unfolds in Roskilde, Denmark, temperatures begin to transition from the warmth of summer to the crispness of autumn. With a minimum of 3°C (37°F) and a maximum reaching 27°C (80°F), the month showcases a delightful range that often encourages outdoor activities. The average temperature stabilizes around 14°C (58°F), marking a pleasant, moderate climate ideal for exploring the charming city or enjoying nearby nature. This gradual decline in heat signals a shift as the days grow shorter and cooler, hinting at the forthcoming seasonal changes. As summer's warmth lingers just a bit longer, September serves as a perfect bridge between the two seasons, encouraging both locals and visitors to relish the vibrant atmosphere of late summer.
In September, Roskilde experiences a moderate precipitation level of 75 mm (3.0 in), which aligns closely with October's rainfall, suggesting a transition into the wetter autumn months. With 12 days of rain, September maintains a steady flow of moisture, marked by a gradual increase in precipitation from the drier summer months. Comparatively, this month's rainfall is slightly less than the preceding August—often the wettest month of the year—which recorded 86 mm (3.4 in). This pattern indicates a shift as the year matures, hinting at the increasing influence of autumn weather systems. As the landscape prepares for the cooler months ahead, the balance between rainy and dry days in September creates a vibrant tapestry of seasonal change in Roskilde.
As summer gives way to fall, September in Roskilde, Denmark, sees a noticeable shift in humidity levels, settling at a comfortable 83%. This month marks a slight increase from the steadfast 77% humidity experienced during the peak summer months of July and August. The transition indicates a gradual return to the higher humidity typical of late autumn, which is 87% in October. Overall, September serves as a bridge, where the lingering warmth of summer merges with the crispness of the approaching fall, creating a unique atmosphere in this charming Danish locale.
As September unfolds in Roskilde, Denmark, the UV Index sits at a moderate 5, indicating a shift from the higher levels experienced during the summer months. With a burn time of 30 minutes, outdoor enthusiasts can enjoy the mild sun while remaining mindful of skin protection. This seasonal transition brings a gradual decline from the high UV levels seen in August, which reached 6, and the peak of 8 in June. As the days grow shorter and the sun’s intensity wanes, September offers a perfect opportunity for outdoor activities without the overwhelming heat of summer. Remember to stay informed about local UV conditions by visiting Roskilde UV Index for the latest updates and tips on safe sun exposure.
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September in Roskilde, Denmark, offers a delightful transition with 322 hours of sunshine, marking a notable dip from the sun-soaked summer months but still basking in a glow that encourages outdoor exploration. As the vibrant days of July and August recede, this month still enjoys a generous amount of daylight compared to the darker winter months ahead. With sunshine gradually waning into October's 248 hours, September serves as a beautiful bridge, showcasing the lingering warmth before autumn fully takes hold. This trend highlights not just the peak summer brilliance, but also the gentle yet poignant shift toward the cozy embrace of fall.
In Roskilde, Denmark, the likelihood of sunny weather shows a clear trend as the year progresses. Starting with a modest 19% chance of sunshine in January, the prospects gradually improve, peaking at 53% in April. However, as summer gives way to autumn, sunshine opportunities begin to wane. In September, residents can expect a 30% chance of sunny days, which is a dip from the summer months but still offers a pleasant number of clear skies compared to the gloomier winter months that lie ahead. With this seasonal shift, September serves as a gentle transition, hinting at the warmth of summer while signaling the pending embrace of fall.
As summer fades into autumn, September in Roskilde, Denmark, offers a gentle transition with approximately 12 hours of daylight. This month marks a significant shift from the sun-drenched days of July, which boasts a peak of 16 hours, and the gradual decline continues as the year progresses towards winter. After basking in the extended daylight of late spring and early summer—16 hours in May and 17 hours in June—September provides a more moderate balance, yet it still captures the lingering essence of summer. With daylight decreasing steadily after this month, Roskilde prepares to embrace the cozy charm of fall, highlighted by enchanting autumnal hues and shorter, crisp days.
As summer transitions into autumn, September in Roskilde, Denmark, experiences a gentle breeze with an average wind speed of 3.9 m/s (9 mph). This marks a subtle decline from the lively gusts of August, which often whisked through the city at 4.4 m/s (10 mph). It's a time when the warmth of summer begins to fade, yet the winds remain mild, creating a serene atmosphere perfect for outdoor activities. Looking ahead to October, residents and visitors can anticipate a notable increase in wind speed, rising to 5.0 m/s (11 mph), signaling the onset of crisper autumn days. The gradual fluctuation of wind patterns throughout the year showcases Roskilde's dynamic climate, making each season uniquely enchanting.
Weather in Roskilde varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Roskilde, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather patterns. In September, temperatures range from a cool 3°C (37°F) to a comfortable high of 27°C (80°F), with an average of 14°C (58°F), making it a pleasant transition into autumn. The month experiences around 75 mm (3.0 in) of precipitation over 12 days, accompanied by relatively high humidity at 83%. In contrast, January brings much colder conditions, with temperatures dropping to a minimum of -12°C (10°F) and peaking at just 11°C (52°F), averaging around 3°C (37°F). It also sees less precipitation, totaling 47 mm (1.8 in) across 10 days, but features even higher humidity at 90%. For more specific insights into January's weather, check out Roskilde weather in January.
September and February present distinctly different weather patterns. In September, temperatures range from a mild 3°C (37°F) at night to a warm 27°C (80°F) during the day, with an average of 14°C (58°F). The month experiences a higher level of precipitation, totaling 75 mm (3.0 in) over about 12 days, and boasts a relatively comfortable humidity of 83%. In contrast, February is much colder, with nighttime temperatures dropping to a frigid -11°C (13°F) and daytime highs reaching only 14°C (57°F), averaging around 2°C (37°F). Additionally, February sees less precipitation at 45 mm (1.8 in) across 10 days and higher humidity levels at 89%. For more information about the weather in February, you can visit Roskilde weather in February.
September and March exhibit distinct contrasts in weather patterns. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 27°C (80°F), with an average temperature of 14°C (58°F). The month experiences approximately 75 mm (3.0 in) of precipitation across 12 days, coupled with a humidity level of 83%. In contrast, March typically has colder temperatures, with a minimum of -10°C (14°F), an average of 4°C (39°F), and a maximum of 16°C (62°F). Precipitation is lower at 59 mm (2.3 in) and occurs over 11 days, while humidity rises slightly to 88%. For more detailed insights into March weather, you can visit Roskilde weather in March.
September and April exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 27°C (80°F), with an average of 14°C (58°F). The month experiences relatively higher precipitation at 75 mm (3.0 in) over 12 days, contributing to a humidity level of 83%. In contrast, April has a cooler climate, with temperatures varying from -5°C (22°F) to 24°C (76°F) and an average temperature of 7°C (45°F). Precipitation is lower in April at 37 mm (1.5 in) over 8 days, paired with a slightly higher humidity of 85%. For more detailed information, you can visit Roskilde weather in April.
In comparing the weather between September and May, we observe some notable differences. September features a broader temperature range with a minimum of 3°C (37°F) and a maximum of 27°C (80°F), resulting in a higher average temperature of 14°C (58°F). In contrast, May starts cooler with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 27°C (82°F), yielding a lower average of 12°C (53°F). Precipitation levels are also greater in September, with 75 mm (3.0 in) over 12 days, compared to May's 56 mm (2.2 in) with the same number of rainy days. Despite September being a bit wetter, both months maintain relatively high humidity levels, with September slightly higher at 83% compared to May's 80%. For a deeper dive into May's climate, check out Roskilde weather in May.
When comparing the weather in September and June, we see notable differences in temperature and precipitation patterns. September typically experiences a broader temperature range, from a minimum of 3°C (37°F) to a maximum of 27°C (80°F), with an average temperature around 14°C (58°F). In contrast, June offers milder conditions, with minimum temperatures starting at 7°C (44°F) and reaching up to 29°C (84°F), averaging 17°C (63°F). Furthermore, September tends to be wetter, with about 75 mm (3.0 in) of rainfall over 12 days, compared to June’s 49 mm (1.9 in) over just 8 days. Humidity levels in September are also slightly higher at 83%, compared to June's 77%. For more detailed insights, you can check Roskilde weather in June.
In comparing the weather between July and September, July tends to be warmer overall, with average temperatures ranging from a minimum of 7°C (44°F) to a maximum of 31°C (88°F), while September sees a more moderate range of 3°C (37°F) to 27°C (80°F). Both months experience similar precipitation levels, with July receiving 76 mm (3.0 in) and September slightly higher at 75 mm (3.0 in), both spread across 12 days. Additionally, humidity levels are higher in September at 83% compared to July's 77%, contributing to a more moist atmosphere as summer transitions into autumn. For a more detailed look at July conditions, you can check Roskilde weather in July.
In comparing the weather of September to August, September tends to be cooler, with average temperatures ranging from a minimum of 3°C (37°F) to a maximum of 27°C (80°F), while August enjoys warmer conditions with temperatures varying from a minimum of 7°C (45°F) to a high of 31°C (87°F). Precipitation in September is slightly lower at 75 mm (3.0 in) over 12 days compared to August, which receives 86 mm (3.4 in) across 14 days. Additionally, September sees a higher humidity level at 83%, compared to August's 77%. For more detailed insights, you can check Roskilde weather in August.
September and October present a notable shift in weather patterns. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 27°C (80°F), with an average of 14°C (58°F). The month sees about 75 mm (3.0 in) of precipitation spread over 12 days, and humidity levels hover around 83%. In contrast, October brings cooler temperatures, with lows plummeting to -3°C (26°F) and an average of 11°C (51°F), peaking at 22°C (73°F). While October also experiences 75 mm (3.0 in) of precipitation, it lasts over 14 days, and the humidity rises slightly to 87%. For more detailed insights into the October climate, you can check Roskilde weather in October.
In September, temperatures are relatively mild, with an average of 14°C (58°F) and a maximum reaching 27°C (80°F), making it a pleasant month before the colder seasons set in. The humidity level is high at 83%, accompanied by 75 mm of rainfall over approximately 12 days, indicating a mix of sunny and rainy weather. In contrast, November features a drop in temperature, with an average of just 7°C (44°F) and nighttime lows dipping to -5°C (22°F). This month experiences much lower precipitation at 37 mm, occurring over about 10 days, but comes with higher humidity at 89%. For a more detailed look at the weather in November, check out Roskilde weather in November.
September weather is characterized by milder temperatures, with a minimum of 3°C (37°F), an average of 14°C (58°F), and a maximum of 27°C (80°F). This month experiences relatively high humidity at 83% and more precipitation, with about 75 mm (3.0 in) falling over 12 days. In contrast, December brings much colder conditions, with temperatures dropping to a minimum of -9°C (15°F) and an average of only 4°C (39°F). The maximum temperature in December reaches 11°C (52°F), and while there is less precipitation at 54 mm (2.1 in) over 13 days, humidity increases slightly to 88%. For more information on December weather specifics, check out Roskilde weather in December.
September in Roskilde marks a distinct transition from the warmth of summer to the chill of autumn. While temperatures can still reach a pleasant 27°C, the average settles around a cool 14°C, reflecting the shifting season. This month also sees a notable increase in precipitation, with rain gracing the city on approximately 12 days, contributing to a lush, vibrant landscape. With an 83% humidity level, the air feels more crisp and refreshing as nature prepares for the cooler months ahead. For a deeper dive into weather patterns, be sure to explore Roskilde Climate.