Last updated: October 30, 2025
September in Frederikshavn, Denmark offers a mild yet variable climate, with maximum temperatures reaching 20°C (68°F) and an average of 15°C (59°F). As the month unfolds, the mercury dips to a minimum of 11°C (51°F), inviting cozy layers for outdoor activities. However, be prepared for the frequent drizzles, as the region experiences around 100 mm (3.9 in) of precipitation over 14 days, creating a humid atmosphere with 85% humidity. Embrace the beauty of early autumn, where the crisp air and soft rainfall bring a refreshing ambiance to this charming coastal town.
As September arrives in Frederikshavn, Denmark, the warmth of summer begins to wane, ushering in a more temperate climate. Daytime temperatures range from a pleasant 11°C (51°F) at night to a comfortable 20°C (68°F) during the day, offering a delightful balance that beckons outdoor activities. The average temperature hovers around 15°C (59°F), providing a mild backdrop that contrasts starkly with the chill of the earlier months. This transition sets the stage for autumn’s approach, while still retaining a hint of summer’s warmth, making September an ideal time to explore the scenic beauty of the region.
In September, Frederikshavn experiences a notable spike in precipitation, with an average of 100 mm (3.9 in) over approximately 14 rainy days. This marks a significant increase from the wetter summer months, culminating in a vibrant yet often damp transition into autumn. The regularity of rain continues to rise through September, hinting at the changing seasons as the city prepares for even wetter conditions in October, which averages 118 mm (4.6 in). This trend reflects a typical Scandinavian climate where the late summer's lush greenery gives way to the richer hues of fall, making September a pivotal month for weather patterns in the region.
As summer transitions to autumn, September in Frederikshavn, Denmark, reveals a notable increase in humidity, averaging at 85%. This shift marks a peak from the relatively lower summer months of 73% in June and July, and while it is a dip from the humid highs of January and February at 92%, the rising trend is evident following August's 77%. As the leaves begin to change and temperatures drop, residents can expect a more humid atmosphere, setting the stage for the wet months ahead, where humidity levels creep back up to the winter averages of around 91%. This pattern reflects the region's characteristic climate, where the balance of moisture remains a defining feature throughout the year.
As summer transitions to autumn in Frederikshavn, Denmark, the UV Index begins to decline, reflecting the shifting sun angles and shorter days. In September, the UV Index hovers at a moderate level of 5, allowing for a safe outdoor experience with a recommended burn time of about 30 minutes. This follows the high levels observed during the peak months of June and July, where the index reached 7, pushing residents and visitors to be more cautious. As we move into the cooler months, the UV levels drop further, highlighting the importance of staying aware of sun safety even as the temperatures cool. For more insights on daily UV levels, check out the detailed forecasts at Frederikshavn UV Index.
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As summer wanes, September in Frederikshavn, Denmark, enjoys a generous 310 hours of sunshine, marking a delightful transition from the sun-soaked days of July and August. This month stands out as a golden period; while it sees a decrease from the summer peak, it still offers notable brightness compared to the winter months ahead, where sunlight dips to a mere 138 hours in November. The overall trend shows a steady increase in daylight from winter’s low, culminating in a vibrant summer before a gradual descent into autumn. September, with its soft light and crisp air, captures the essence of change, inviting both locals and visitors to relish the lingering warmth before the colder months set in.
In Frederikshavn, Denmark, September presents a moderate 35% chance of sunny weather, a welcome respite as summer transitions to autumn. While this percentage marks a slight drop from the sunniest months of April (69%) and August (50%), it remains significantly higher than the dreary winter months, which hover around 21-27%. This pattern illustrates a broader trend: as the year progresses, the likelihood of sunshine generally declines, peaking in the vibrant spring and summer months before tapering off into fall and winter. Therefore, while September may not boast the brightest skies, it still offers more sunny days than the colder months ahead, making it a pleasant time for outdoor activities before winter sets in.
In Frederikshavn, Denmark, September marks a transition as daylight begins to wane after the radiant summer months. While June and July bask in 17 hours of daylight, September sees a decline to 12 hours, reflecting the gradual shift towards autumn. This change is a reminder of the seasonal rhythm, where longer days transform into cozy evenings, as daylight decreases from a peak in May and June to just 10 hours by October. The fading light in September offers a blend of lingering warmth from summer while ushering in the cooler, more introspective days of fall.
September in Frederikshavn, Denmark, marks a subtle transition as the winds begin to shift slightly. With an average wind speed of 6.1 m/s (14 mph), the breezy conditions reflect a gentle decline from the summer months, yet maintain a lively atmosphere that encapsulates the early autumn charm. Following the higher winds of August, this decrease hints at the impending cooler months, as October soon brings a resurgence with average speeds climbing to 7.8 m/s (17 mph). The wind patterns throughout the year reveal a dynamic coastal climate, where the seasonal ebb and flow creates a unique experience for both residents and visitors alike, celebrating the serene yet spirited ambiance that September offers.
Weather in Frederikshavn varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Frederikshavn, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, temperatures are generally milder, with minimums around 11°C (51°F) and maximums reaching up to 20°C (68°F), while January experiences much colder conditions, with temperatures dropping to a minimum of -3°C (26°F) and a maximum of only 10°C (50°F). September also sees more precipitation, totaling 100 mm (3.9 in) over 14 days, compared to January's 53 mm (2.1 in) over 11 days. Additionally, September has a relative humidity of 85%, which is slightly lower than January's 92%. For a more in-depth look at winter weather, you can check Frederikshavn weather in January.
September and February present stark contrasts in weather patterns. In September, temperatures range from a minimum of 11°C (51°F) to a maximum of 20°C (68°F), with an average of 15°C (59°F). The month experiences considerable rainfall, with 100 mm (3.9 in) over approximately 14 days, and humidity levels are relatively high at 85%. In contrast, February brings much colder conditions, with temperatures dropping to a minimum of -8°C (18°F) and an average of only 3°C (37°F), peaking at just 9°C (49°F). Precipitation is lighter at 64 mm (2.5 in) over 11 days, but humidity remains elevated at 91%. For more detailed insights about February weather, check out Frederikshavn weather in February.
In September, the weather is generally milder with temperatures ranging from a minimum of 11°C (51°F) to a maximum of 20°C (68°F), averaging 15°C (59°F). The month experiences significant rainfall, totaling around 100 mm (3.9 in) over approximately 14 days, accompanied by high humidity levels at 85%. In stark contrast, March is much colder, with temperatures dipping as low as -9°C (17°F) and only reaching a maximum of 10°C (50°F), averaging just 4°C (39°F). Precipitation is also less abundant in March, with a total of 63 mm (2.5 in) spread across 11 days, while humidity remains slightly higher at 89%. Overall, September offers a warmer, wetter climate compared to the brisk chill of March. For more specific details, you can refer to Frederikshavn weather in March.
When comparing the weather in September and April, one can observe distinct differences in temperature and precipitation. September enjoys a milder climate with temperatures ranging from a minimum of 11°C (51°F) to a maximum of 20°C (68°F), averaging around 15°C (59°F). In contrast, April experiences cooler conditions, where temperatures range from a chilly 0°C (33°F) to 14°C (57°F), averaging just 7°C (44°F).
Additionally, September sees significantly more precipitation, totaling 100 mm (3.9 in) over approximately 14 days, while April has a much lighter rainfall of 35 mm (1.4 in) across only 6 days. The humidity levels are fairly similar, with September at 85% and April slightly lower at 84%. For more detailed information about April weather, you can visit Frederikshavn weather in April.
When comparing the weather in September and May, one can observe notable differences in temperature and precipitation patterns. September enjoys a warmer average temperature of 15°C (59°F), while May is cooler with an average of 11°C (51°F). Both months can reach a maximum of 20°C (68°F), but September generally provides milder conditions, as the minimum temperature is higher at 11°C (51°F) compared to 4°C (39°F) in May. In terms of precipitation, September is wetter with 100 mm (3.9 in) spread over 14 days, compared to May’s 58 mm (2.3 in) across 10 days. Additionally, the humidity levels are higher in September at 85%, while May has a slightly lower humidity at 75%. For more detailed insights on May weather, check out Frederikshavn weather in May.
When comparing the weather in September and June, both months exhibit mild temperatures, but there are notable differences. September has an average temperature of 15°C (59°F), with a minimum of 11°C (51°F) and a maximum of 20°C (68°F). In contrast, June tends to be slightly warmer, averaging the same 15°C (60°F) but reaching a higher maximum of 22°C (72°F) while only dropping to a minimum of 10°C (49°F). Additionally, September experiences more precipitation, with about 100 mm (3.9 in) over 14 days, compared to June’s 62 mm (2.4 in) across 10 days. Humidity levels also differ, with September being more humid at 85% compared to June’s 73%. For a more detailed overview, you can check Frederikshavn weather in June.
When comparing the weather in September and July, we find notable differences in temperature, precipitation, and humidity. In September, temperatures range from a minimum of 11°C (51°F) to a maximum of 20°C (68°F), with an average of 15°C (59°F). The month is significantly wetter, receiving 100 mm (3.9 in) of precipitation over 14 days, and the humidity levels are higher at 85%. In contrast, July enjoys milder weather, with temperatures varying from 12°C (55°F) to 23°C (74°F) and an average of 17°C (63°F). July also experiences less rain, totaling 59 mm (2.3 in) across just 9 days, along with a lower humidity of 73%. For a detailed look at the weather conditions during July, you can check Frederikshavn weather in July.
In comparing the weather between August and September, September tends to be cooler and wetter. The minimum temperature in September drops to 11°C (51°F), while in August it is slightly warmer at 13°C (56°F). Additionally, September has an average temperature of 15°C (59°F) compared to August's 17°C (63°F), and a maximum temperature of only 20°C (68°F), which feels quite a bit cooler than August's higher peak of 24°C (75°F). Furthermore, September experiences more precipitation with 100 mm (3.9 in) over 14 days, whereas August sees 80 mm (3.2 in) spread across 13 days. The humidity also rises in September to 85% from August's 77%. For more details, check out Frederikshavn weather in August.
September and October present a noticeable shift in weather patterns. In September, temperatures range from a mild minimum of 11°C (51°F) to a maximum of 20°C (68°F), with an average of 15°C (59°F). The month is characterized by relatively high humidity at 85% and significant precipitation of 100 mm (3.9 in) over 14 days. In contrast, October sees a drop in overall temperatures, with a minimum of 4°C (40°F), averaging 11°C (53°F) and peaking at a maximum of 16°C (61°F). This month experiences even more rainfall, totaling 118 mm (4.6 in) across 16 days, coupled with increased humidity at 91%. For those interested in a deeper look at the weather trends, check out Frederikshavn weather in October.
In September, the weather is generally milder, with average temperatures ranging from a minimum of 11°C (51°F) to a maximum of 20°C (68°F), creating comfortable conditions for outdoor activities. However, it does see considerable rainfall, with about 100 mm (3.9 in) falling over approximately 14 days and a humidity level of 85%. In contrast, November brings a notable drop in temperatures, averaging between 0°C (33°F) and 15°C (59°F), with a cooler average of 8°C (47°F). While November receives slightly less precipitation at 83 mm (3.3 in), it experiences more rainy days—17 in total—coupled with higher humidity reaching 92%. For more detailed weather insights, check out Frederikshavn weather in November.
In September, the weather is relatively mild, with temperatures ranging from a minimum of 11°C (51°F) to a maximum of 20°C (68°F) and an average of 15°C (59°F). The month experiences around 100 mm (3.9 in) of precipitation over approximately 14 days, with humidity levels sitting at a comfortable 85%. In contrast, December sees a considerable drop in temperatures, with minimums plummeting to -2°C (28°F), an average of 5°C (41°F), and a maximum of only 10°C (50°F). This month has slightly lower precipitation at 88 mm (3.5 in), but it occurs over a greater number of days, totaling 18, resulting in a higher humidity level of 91%. For more detailed insights, you can check Frederikshavn weather in December.
As September unfolds in Frederikshavn, the transition from summer to autumn becomes palpable. With a mild average temperature of around 15°C, the crispness of the season starts to replace the warmth of summer months. This month typically witnesses an increase in precipitation, with around half the days seeing some rain, contributing to the region's lush landscapes. Humidity remains high, creating a distinctive, fresh atmosphere that’s characteristic of this time of year. For a deeper understanding of how September weather compares to other months and its overall climate patterns, visit Frederikshavn Climate.