September Weather in Hirtshals, Denmark

Last updated: October 30, 2025

September in Hirtshals, Denmark offers a mild yet variable climate, where daytime temperatures can soar to a pleasant 24°C (75°F), balanced by an average of 14°C (58°F) and cool evenings dropping to a minimum of 7°C (44°F). This month experiences 84 mm (3.3 in) of rainfall spread over 13 days, contributing to a lush, vibrant landscape. Humidity hovers around 85%, creating a crispness in the air that invigorates visitors. Overall, September is a transitional month, wrapping up summer warmth while hinting at the cooler days of autumn ahead.

September Temperature in Hirtshals

In September, Hirtshals, Denmark, begins to transition into the cooler embrace of autumn, showcasing a pleasant yet varied climate. With temperatures ranging from a mild 7°C (44°F) at night to a comfortable 24°C (75°F) during the day, the average temperature settles at around 14°C (58°F). This month often invites fleeting warmth reminiscent of summer, allowing for enjoyable outdoor activities before the chill sets in. Comparatively, as the last traces of warmth fade away, September stands out as a harmonious bridge between the balmy days of summer and the crisp coolness of fall, making it an ideal time for visitors and locals alike to experience Hirtshals's natural beauty.

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

The chart illustrates September temperature patterns in Hirtshals, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hirtshals, September typically has an average temperature of 14°C (58°F), with highs reaching up to 24°C (75°F) and lows dropping to around 7°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec383739455260636258514540
Data source: Temperature data for Hirtshals 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 Hirtshals

In September, Hirtshals experiences a substantial shift in precipitation, with 84 mm (3.3 in) of rain spread across 13 days. This marks a slight decrease from the wetter month of August, which saw 92 mm (3.6 in) over 14 days. As autumn begins to set in, the overall trend indicates a gradual increase in rainfall as the year progresses, culminating in October's expected higher total of 95 mm (3.7 in) over 16 days. This pattern reflects the transition towards the wetter months of the year, with September perfectly positioned as a midpoint, bringing a mix of refreshing rain and the beginnings of cooler breezes, hinting at the changing season.

September Precipitation Trends in Hirtshals

The chart displays monthly precipitation patterns in Hirtshals, 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. In Hirtshals, September typically receives around 84 mm (3.3 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec445860365865649284956368
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hirtshals

In Hirtshals, Denmark, September marks a notable shift in humidity levels, with a reading of 85%. This increase is part of a slight upward trend as the summer months wind down; after falling to a low of 77% in June, the humidity fluctuated modestly through July and August before reclaiming some of that moisture in early autumn. The overall pattern reveals that the coastal climate of Hirtshals experiences its highest humidity during the colder months, with January and February consistently hovering around 88% and 87%, while September serves as a transitional period, balancing lingering summer warmth with the approach of fall. As the season progresses, residents can expect the return of the heavier humidity typical for the region.

September Average Humidity in Hirtshals

This chart illustrates the average monthly humidity levels in Hirtshals, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Hirtshals is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%86%84%79%77%78%80%85%87%87%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hirtshals

As summer fades in Hirtshals, Denmark, September sees a noticeable shift in the UV Index, settling at 5 and falling into the moderate exposure category. This marks a gentle decline from the high readings of 6 and 7 in July and August, indicating that while the sun’s intensity is less than during peak summer months, caution is still warranted. With a burn time of approximately 30 minutes, it's wise for outdoor enthusiasts to be mindful of UV exposure, especially during midday hours. Although the risk is less than in the height of summer, remember to stay protected. For more detailed information about UV levels, check out Hirtshals UV Index.

Maximum UV Index Levels in Hirtshals for September

The chart shows the monthly maximum UV Index (UVI) for Hirtshals 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. In September, the maximum UV index in Hirtshals typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123567765211
Data source: Hirtshals 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 Hirtshals

As summer fades into autumn, September in Hirtshals, Denmark, showcases a delightful 308 hours of sunshine, marking a gentle decline from the vibrant days of July and August. This month serves as a transitional period, where the lingering warmth of the summer sun gradually yields to the crispness of fall. The trend of increasing daylight from the winter's bleak 98 hours in January to the sun-drenched heights of 473 hours in July beautifully illustrates the changing seasons. As the year progresses towards October's cooler 253 hours, September remains a cherished month, where the sun continues to shine brightly, inviting residents and visitors alike to savor the beauty of Hirtshals before winter envelops the landscape.

Monthly Sunshine Duration in Hirtshals: September Highlighted

The September sunshine duration represents the total number of hours Hirtshals 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.
JanFebMarAprMayJunJulAugSepOctNovDec98h182h279h381h443h462h473h414h308h253h134h110h
Data source: Hirtshals September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Hirtshals During September

As September rolls in, Hirtshals, Denmark experiences a notable shift in weather patterns. With a 33% chance of sunny days, this month marks a transition from the comparatively higher probabilities seen in spring and early summer. After enjoying peaks of sunshine in April (69%) and moderate levels in July and August (both at 47%), residents might feel a slight dip in bright days as autumn approaches. While September's sunny weather is less frequent than the summer months, it’s still a welcome opportunity for outdoor activities before the chill of fall settles in. The overall trend indicates that while the chance of sun decreases, there's still a glimmer of brightness lingering in the early autumn air.

Percentage of Sunny Days in September in Hirtshals

The chart illustrates the percentage of sunny days in Hirtshals 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 Hirtshals experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec23%28%48%69%29%41%47%47%33%27%22%27%
Data source: Hirtshals September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Hirtshals in September

As September unfolds in Hirtshals, Denmark, the daylight hours begin their gentle descent from the summer peak, offering about 12 hours of light each day. Following the long, sun-drenched days of July and August, which boasted 17 and 15 hours respectively, this shift marks a transition into the softer light of autumn. While September still enjoys more daylight than the winter months ahead, with 10 hours in October and dwindling to 6 in December, the gradual shortening serves as a reminder of the changing seasons. This trend, as daylight decreases, invites an appreciation for those lingering golden hours before the cold sets in.

Average Daylight Hours in Hirtshals for September

The chart illustrates the variation in daylight duration in Hirtshals throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 24m9h 27m11h 52m14h 22m16h 36m17h 51m17h 11m15h 8m12h 43m10h 15m7h 59m6h 43m
Data source: Hirtshals daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Hirtshals

In September, Hirtshals, Denmark, experiences a gentle decline in wind speed, averaging 4.6 m/s (10 mph), slightly lower than the summer months. This nuanced shift hints at the transition from the warm embrace of summer to the crisp embrace of autumn. Notably, wind speeds have consistently hovered around the low to mid-range throughout the summer, with July and May recording the year's calmest conditions at 4.1 m/s (9 mph). As the year progresses into October, there's a noticeable uptick, with wind speeds increasing to 5.8 m/s (13 mph), signaling the approach of winter's blustery gales. Overall, September offers a serene wind experience, inviting quiet reflection before the seasonal change accelerates.

Average September Wind Speed in Hirtshals

The chart displays monthly wind speed patterns in Hirtshals, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.75.65.54.84.14.94.14.94.6 m/s5.85.85.2
Data source: Hirtshals September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Hirtshals Compares to Other Months

Weather in Hirtshals varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Hirtshals, focusing on differences in temperature, rainfall, humidity, and UV levels.

September and January offer a stark contrast in weather. In September, temperatures range from a mild 7°C (44°F) to a warm 24°C (75°F), presenting an average of 14°C (58°F). This month also sees considerable rainfall, with 84 mm (3.3 in) over 13 days, accompanied by high humidity at 85%. In contrast, January experiences much colder conditions, with temperatures dipping as low as -7°C (20°F) and averaging only 4°C (39°F). The maximum temperature reaches just 10°C (50°F), and overall precipitation is lighter at 44 mm (1.7 in) over 8 days, with slightly higher humidity at 88%. For a more detailed look at January weather, you can visit Hirtshals weather in January.

When comparing the weather in September and February, the stark differences are immediately evident. September boasts a temperate range with minimum temperatures around 7°C (44°F) and maximums reaching up to 24°C (75°F), creating an overall pleasant average of 14°C (58°F). The month also experiences considerable precipitation, totaling 84 mm (3.3 in) over 13 days, alongside a humidity level of 85%. In contrast, February is characterized by frigid conditions, with minimum temperatures dropping to -9°C (16°F) and a maximum of just 10°C (50°F), leading to a chilly average of 3°C (37°F). Although February has less overall precipitation, at 58 mm (2.3 in) over 11 days, it has a higher humidity level of 87%, contributing to its cold and damp feel. For a more detailed look into February's weather specifics, you can visit Hirtshals weather in February.

September and March present distinctly different weather patterns. In September, temperatures range from a minimum of 7°C (44°F) to a maximum of 24°C (75°F), with an average of 14°C (58°F). The month also sees 84 mm (3.3 in) of precipitation over 13 days, and humidity levels hover around 85%. In contrast, March experiences much colder conditions, with temperatures ranging from -10°C (15°F) to 12°C (55°F), and an average temperature of just 4°C (39°F). Precipitation is lower in March at 60 mm (2.4 in) over 11 days, accompanied by a slightly higher humidity level of 86%. For a more detailed look at March weather, check out Hirtshals weather in March.

Comparing the weather in September and April reveals distinct seasonal contrasts. In September, temperatures range from a minimum of 7°C (44°F) to a pleasant maximum of 24°C (75°F), with an average temperature of 14°C (58°F). This month also sees higher precipitation, totaling 84 mm (3.3 in) over about 13 days, along with a humidity level of 85%. In contrast, April experiences cooler temperatures, with a minimum of -2°C (29°F) and a maximum of 20°C (68°F), averaging just 7°C (45°F). The month is notably drier, with only 36 mm (1.4 in) of precipitation spread over 7 days, while humidity remains slightly lower at 84%. For more detailed insights, check out Hirtshals weather in April.

When comparing the weather in September and May, September tends to be milder with average temperatures ranging from a minimum of 7°C (44°F) to a maximum of 24°C (75°F), while May starts cooler, with temperatures from 2°C (37°F) to a peak of 25°C (77°F). September also features higher humidity at 85% compared to May's 79%, contributing to a more muggy feel. Additionally, September receives more precipitation, with 84 mm (3.3 in) over about 13 days, in contrast to May's 58 mm (2.3 in) over 11 days. For a closer look at May’s unique climate, check out Hirtshals weather in May.

In comparing the weather of September and June, we find that September tends to be slightly cooler, with an average temperature of 14°C (58°F) compared to June's warmer average of 16°C (60°F). The maximum temperatures also reflect this difference, with September reaching up to 24°C (75°F) while June can go up to 26°C (78°F). Both months experience notable humidity levels, but September is more humid at 85% compared to June's 77%. Additionally, September sees more precipitation, with 84 mm (3.3 in) over approximately 13 days, compared to June's 65 mm (2.5 in) over 11 days. For more detailed information about June weather, you can check Hirtshals weather in June.

When comparing the weather in September and July, we can observe distinct differences in temperature and precipitation patterns. In September, the minimum temperature drops to 7°C (44°F), with an average of 14°C (58°F) and a maximum of 24°C (75°F), while July enjoys slightly warmer conditions, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 28°C (83°F). Additionally, September experiences more precipitation, totaling 84 mm (3.3 in) over 13 days, compared to July's 64 mm (2.5 in) over just 10 days. The humidity levels also differ; September has a higher humidity of 85%, while July's humidity averages around 78%. For more detailed insights, check out the Hirtshals weather in July.

In September, the weather becomes noticeably cooler compared to August, with minimum temperatures dropping from 10°C (51°F) to 7°C (44°F) and average temperatures declining from 17°C (63°F) to 14°C (58°F). While August boasts a warmer maximum temperature of 28°C (83°F), September's peak reaches only 24°C (75°F). Precipitation levels are slightly lower in September, at 84 mm (3.3 in) over 13 days, compared to August's 92 mm (3.6 in) over 14 days. Additionally, September experiences higher humidity at 85%, compared to August’s 80%. For a more detailed overview of the weather patterns, visit Hirtshals weather in August.

September's weather is characterized by warmer temperatures, with a minimum of 7°C (44°F) and an average of 14°C (58°F), peaking at a comfortable 24°C (75°F). It experiences relatively high humidity at 85% and receives 84 mm (3.3 in) of precipitation over 13 days. In contrast, October brings a notable drop in temperatures, with minimums falling to 2°C (35°F) and an average of 11°C (51°F); the maximum reaches 21°C (70°F). The month is slightly wetter, with 95 mm (3.7 in) of rain over 16 days and a slight increase in humidity to 87%. For more detailed information on October weather, check out Hirtshals weather in October.

September temperatures in Hirtshals are notably milder, with an average of 14°C (58°F) and a maximum of 24°C (75°F). In contrast, November brings a significant drop, featuring an average temperature of 7°C (45°F) and a minimum that can reach -2°C (29°F). Both months experience similar humidity levels, with September at 85% and November slightly higher at 87%. In terms of precipitation, September sees more rainfall at 84 mm (3.3 in) over 13 days, whereas November has 63 mm (2.5 in) over 12 days, making September the wetter month overall. For more detailed insights about November weather in Hirtshals, visit Hirtshals weather in November.

September and December present contrasting weather patterns in Hirtshals. In September, temperatures range from a mild 7°C (44°F) at night to a pleasant 24°C (75°F) during the day, with an average of 14°C (58°F). The month sees significant rainfall, totaling 84 mm (3.3 in) across 13 days, accompanied by high humidity at 85%. In contrast, December brings much colder temperatures, with a minimum of -5°C (24°F) and a maximum of 11°C (52°F), averaging only 4°C (40°F). Although the total precipitation decreases to 68 mm (2.7 in), it occurs on 15 days, maintaining the same high humidity of 85%. For more details on December weather, visit Hirtshals weather in December.

Compare Hirtshals's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Hirtshals

As September unfolds in Hirtshals, it marks a notable transition from the warmth of summer to the crispness of fall. With a comfortable average temperature hovering around 14°C (58°F), this month welcomes both the lingering warmth of occasional sunny days and the increasing crispness of cooler nights. While rainfall is more frequent, with about 13 days of precipitation, the overall atmosphere remains relatively humid at 85%, often creating a rejuvenating freshness in the air. This blend of mild temperatures and increased moisture sets September apart as a unique prelude to autumn, making it a perfect time for those who enjoy the beautiful nuances of this coastal town. For more detailed information about the weather conditions, check out the Hirtshals Climate.