September Weather in Heiligenhafen, Germany

Last updated: February 26, 2025

In September, Heiligenhafen, Germany, experiences a pleasant transition as summer gradually yields to autumn. The maximum temperature can reach a warm 26°C (80°F), while the average temperature settles around a comfortable 15°C (60°F), dipping to a minimum of 9°C (48°F) during cooler nights. Despite the inviting weather, expect 56 mm (2.2 in) of rainfall spread across 10 days, contributing to an overall humidity level of 83%. As the month progresses, prepare for a mix of sunny and rainy days, making it a unique time to explore the coastal charm of Heiligenhafen.

September Temperature in Heiligenhafen

In September, Heiligenhafen, Germany, experiences a delightful transition as summer edges into autumn. With minimum temperatures around 9°C (48°F) and an average of 15°C (60°F), you'll feel a mild nip in the air. The maximum temperatures can still reach a pleasant 26°C (80°F), making this month ideal for outdoor activities and enjoying the beauty of the changing leaves. Compared to the summer months, where highs peaked at 30°C (86°F) in August, September offers a refreshing relief while still retaining some of that late summer warmth. As the days gradually shorten, this month serves as a perfect backdrop for cozy evenings and scenic landscapes, inviting visitors to relish in the early autumn charm of this coastal gem.

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

The chart illustrates September temperature patterns in Heiligenhafen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec383840455362646560544640
Data source: Temperature data for Heiligenhafen 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 Heiligenhafen

In September, Heiligenhafen experiences an average precipitation of 56 mm (2.2 in), continuing the trend of mild rainfall that characterizes late summer. With 10 days of rain, the month’s precipitation remains consistent with August's levels, albeit slightly lower. This gradual decline from the wetter summer months leads into the more significant rain patterns typical of autumn, as evidenced by October's increase to 89 mm (3.5 in). The overall trend highlights a seasonal shift, where September acts as a bridge between the luscious summer rains and the more robust fall showers, creating a rhythm of weather that locals have come to anticipate.

September Precipitation Trends in Heiligenhafen

The chart displays monthly precipitation patterns in Heiligenhafen, 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.
JanFebMarAprMayJunJulAugSepOctNovDec605360405257747156895670
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Heiligenhafen

In September, Heiligenhafen experiences a noticeable shift in humidity, rising to 83% after the summer months, where levels hovered around 77%. This increase marks a transition as the air begins to cool, hinting at the approaching autumn. While September doesn't quite reach the highs of the winter months, which can soar to 90% in January, it stands out as a bridge between the drier summer and the more humid fall. The gradual return to higher humidity levels in September underscores a seasonal rhythm, reminding residents and visitors alike that nature is preparing for a shift in weather patterns as the year progresses.

September Average Humidity in Heiligenhafen

This chart illustrates the average monthly humidity levels in Heiligenhafen, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec90%89%88%85%80%77%77%77%84%87%89%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Heiligenhafen

As summer gives way to autumn in Heiligenhafen, Germany, the UV Index sees a gradual decline in September, settling at a moderate level of 5. This shift indicates a decrease in sun intensity as the year progresses, resulting in a burn time of 30 minutes for unprotected skin. Compared to the very high levels experienced in June and high values of July and August, the sun's rays become less aggressive, making it essential to stay mindful of sun protection while still enjoying outdoor activities. As temperatures cool and daylight shortens, it's a reminder to embrace the outdoors safely. For more detailed insights on UV exposure throughout the year, visit Heiligenhafen UV Index.

Maximum UV Index Levels in Heiligenhafen for September

The chart shows the monthly maximum UV Index (UVI) for Heiligenhafen 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.
JanFebMarAprMayJunJulAugSepOctNovDec123568765321
Data source: Heiligenhafen 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 Heiligenhafen

September in Heiligenhafen, Germany, brings a warm transition from summer to autumn, reflected in its 321 hours of sunshine. This month marks a notable decline from the peak summer months of June and July, which boast over 430 hours each, yet still outshines the dreary winter months ahead. As the vibrant reds and golds of early autumn begin to take over the landscape, September offers a delightful blend of warmth and light. With a significant leap in sunshine hours from the dreariness of January and November, this time invites both locals and visitors to bask in the last golden rays before the chill of October sets in.

Monthly Sunshine Duration in Heiligenhafen: September Highlighted

The September sunshine duration represents the total number of hours Heiligenhafen 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.
JanFebMarAprMayJunJulAugSepOctNovDec104h185h264h365h420h432h435h400h321h249h157h117h
Data source: Heiligenhafen September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Heiligenhafen During September

As September rolls in, Heiligenhafen, Germany, offers a relatively favorable chance of sunny weather, with approximately 31% likelihood of sunshine gracing the coast. This marks a slight decline from the peak of 49% in April, but remains consistent with the sun-filled days of August and October, both at 31%. Overall, September enjoys a gentle transition towards autumn, where sunshine may become less frequent than the vibrant summer months but still offers pleasant opportunities for outdoor exploration before the chill sets in.

Percentage of Sunny Days in September in Heiligenhafen

The chart illustrates the percentage of sunny days in Heiligenhafen 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 Heiligenhafen experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec16%27%38%49%30%39%32%35%31%31%16%19%
Data source: Heiligenhafen September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Heiligenhafen in September

As summer transitions into autumn in Heiligenhafen, Germany, September reveals a delightful balance in daylight, offering approximately 12 hours of sunshine—a gentle decline from the 14 hours enjoyed in August. This gradual reduction reflects a broader trend throughout the year, where daylight peaks in June at 17 hours before steadily tapering as the colder months approach. The increase in daylight from the depths of winter, starting with just 7 hours in January, reaches its zenith mid-year, showcasing the vibrant energy of the seasons. As September unfolds, this shift not only highlights the changing season but also invites locals and visitors alike to relish the last golden rays before autumn settles in.

Average Daylight Hours in Heiligenhafen for September

The chart illustrates the variation in daylight duration in Heiligenhafen throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 59m9h 45m11h 54m14h 5m16h 2m17h 4m16h 31m14h 46m12h 38m10h 27m8h 29m7h 24m
Data source: Heiligenhafen daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Heiligenhafen

In September, the winds in Heiligenhafen, Germany bring a gentle breeze, averaging 5.2 m/s (12 mph), a subtle decline compared to the lively gusts of summer. This month marks a transition as the wind speeds gradually decrease from the elevated levels seen in August, setting the stage for the crisp autumn air to follow. Interestingly, September's winds are still stronger than those of the early summer months, highlighting a consistent pattern where the transition from summer to fall witnesses a slight drop in wind intensity. As the seasons shift, the delicate balance between warmth and chill begins to redefine the coastal atmosphere, inviting both locals and visitors to embrace the serene beauty of the changing landscape.

Average September Wind Speed in Heiligenhafen

The chart displays monthly wind speed patterns in Heiligenhafen, 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.
JanFebMarAprMayJunJulAugSepOctNovDec6.46.55.75.95.54.25.15.85.2 m/s6.76.26.5
Data source: Heiligenhafen September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Heiligenhafen Compares to Other Months

The weather in Heiligenhafen 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 Heiligenhafen and find detailed weather information for every month.

In September, temperatures in Heiligenhafen range from a minimum of 9°C (48°F) to a maximum of 26°C (80°F), with an average of 15°C (60°F). The month experiences about 56 mm (2.2 in) of precipitation over approximately 10 days, accompanied by a humidity level of 83%. In stark contrast, January brings much colder weather, with temperatures dropping to a minimum of -7°C (20°F) and reaching a maximum of 11°C (52°F), averaging just 3°C (38°F). Precipitation slightly increases to 60 mm (2.4 in) over around 13 days, with humidity peaking at 90%. For a detailed overview of January's weather, you can visit Heiligenhafen weather in January.

September and February present two contrasting weather patterns. In September, temperatures range from a mild 9°C (48°F) at night to a warm 26°C (80°F) during the day, with an average of 15°C (60°F). The month sees about 56 mm (2.2 in) of rainfall over approximately 10 days, accompanied by a humidity level of 83%. In stark contrast, February experiences much colder conditions, with temperatures dipping as low as -6°C (21°F) and peaking at a relatively cool 13°C (55°F), averaging around 3°C (38°F). The precipitation is similar, at 53 mm (2.1 in) over 10 days, but the humidity rises slightly to 89%. For a more detailed look at February conditions, visit Heiligenhafen weather in February.

September and March present contrasting weather conditions. In September, temperatures range from a mild 9°C (48°F) at night to a warm 26°C (80°F) during the day, with an average of 15°C (60°F). The month sees around 56 mm (2.2 in) of precipitation spread over about 10 days, and humidity levels hover at 83%. In sharp contrast, March experiences much cooler temperatures, with nighttime lows plunging to -8°C (17°F) and daytime highs reaching only 14°C (57°F), averaging just 4°C (40°F). Although precipitation is slightly higher at 60 mm (2.4 in) over 12 days, humidity is also elevated at 88%. For more information on the March conditions in the area, check out Heiligenhafen weather in March.

When comparing the weather in September and April, notable differences emerge. September boasts a wider temperature range, with average highs reaching 26°C (80°F), while April's maximum temperature only peaks at 20°C (68°F). The average temperature in September is also significantly higher at 15°C (60°F), compared to April's average of just 7°C (46°F). Additionally, September experiences slightly more rainfall, with 56 mm (2.2 in) over approximately 10 days, while April sees 40 mm (1.6 in) over about 8 days. Both months have similar humidity levels, with September at 83% and April at 85%. For more detailed information, you can check Heiligenhafen weather in April.

When comparing the weather in September and May, we see some notable differences. September enjoys warmer temperatures, with averages around 15°C (60°F) and maximums reaching 26°C (80°F), while May's average is lower at 12°C (53°F) and peaks at 22°C (73°F). Both months have similar precipitation levels—September experiences 56 mm (2.2 in) across about 10 days, whereas May has slightly less at 52 mm (2.1 in) over approximately 11 days. Additionally, humidity is slightly higher in September at 83%, compared to 80% in May. For more details on May's weather, you can check out Heiligenhafen weather in May.

When comparing the weather in September and June, we can see some notable differences. In June, temperatures range from a minimum of 9°C (48°F) to a maximum of 27°C (81°F), with an average of 17°C (63°F) and slightly lower humidity at 77%. Meanwhile, September maintains a similar minimum temperature of 9°C (48°F) but sees a drop in average temperature to 15°C (60°F) and a maximum of 26°C (80°F). Precipitation is fairly consistent in both months, with June having 57 mm (2.3 in) over 9 days compared to September's 56 mm (2.2 in) over 10 days. Therefore, while both months exhibit mild temperatures, June tends to be warmer and slightly less humid. For more details, you can check Heiligenhafen weather in June.

In comparing the weather between September and July, September tends to be cooler, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 26°C (80°F), averaging around 15°C (60°F). In contrast, July experiences slightly warmer temperatures, with a minimum of 11°C (53°F) and a maximum of 29°C (84°F), averaging 18°C (65°F). Additionally, September sees 56 mm (2.2 in) of precipitation over approximately 10 days, while July has more rainfall at 74 mm (2.9 in) across 12 days. The humidity in September is noticeably higher at 83%, compared to July's 77%. For more detailed information, you can check Heiligenhafen weather in July.

In comparing the weather between August and September, we notice a significant shift in temperatures and precipitation patterns. August features milder conditions with an average temperature of 19°C (66°F), peaking at 30°C (86°F), while September sees cooler averages at 15°C (60°F) with a maximum temperature of 26°C (80°F). Precipitation is also higher in August, totaling 71 mm (2.8 in) over 13 days compared to 56 mm (2.2 in) across 10 days in September. Additionally, humidity levels are slightly elevated in September at 83%, compared to 77% in August. For a more detailed insight into the conditions of August, you can check Heiligenhafen weather in August.

September weather in Heiligenhafen sees a pleasant range of temperatures, with a minimum of 9°C (48°F) and a maximum of 26°C (80°F), offering a comfortable average of 15°C (60°F). However, it experiences less rainfall than October, with 56 mm (2.2 in) over about 10 days and a humidity level of 83%. In contrast, October brings cooler conditions, with temperatures dipping to a minimum of 4°C (40°F) and an average of 12°C (54°F), peaking at 22°C (71°F). The month is wetter, with 89 mm (3.5 in) of precipitation spread across 17 days and humidity rising slightly to 87%. For more details, you can check this link: Heiligenhafen weather in October.

September and November exhibit notable differences in weather patterns. In September, temperatures range from a mild minimum of 9°C (48°F) to a warm maximum of 26°C (80°F), with an average of 15°C (60°F). The month experiences around 56 mm (2.2 inches) of precipitation over approximately 10 days, accompanied by a humidity level of 83%. In contrast, November brings significantly cooler temperatures, with a minimum of 1°C (35°F) and a maximum reaching only 17°C (63°F), averaging just 8°C (46°F). While both months receive the same amount of precipitation (56 mm), November typically sees more rainy days, averaging 13 days, and experiences a slightly higher humidity level at 89%. For a more detailed overview of the weather in November, you can visit Heiligenhafen weather in November.

In September, the weather generally presents milder temperatures, with averages around 15°C (60°F) and a maximum of 26°C (80°F), making it a pleasant month for outdoor activities. However, it typically sees around 56 mm (2.2 in) of precipitation over about 10 days, accompanied by relatively high humidity at 83%. In contrast, December ushers in a much colder climate, where the average temperature drops to 5°C (40°F), peaking at just 11°C (51°F) and experiencing minimums around -6°C (21°F). This month also encounters increased rainfall, totaling 70 mm (2.8 in) over approximately 15 days, along with a slightly higher humidity level of 88%. For more details, check out Heiligenhafen weather in December.

Compare Heiligenhafen's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Heiligenhafen

As summer transitions into autumn, Heiligenhafen experiences a noticeable shift in weather during September. Temperatures begin to cool, with milder days averaging around 15°C (60°F) and maximums occasionally reaching 26°C (80°F), making it a pleasant time for outdoor activities. However, rain becomes more frequent, with about 10 days of precipitation totaling 56 mm (2.2 in), resulting in a wetter environment than the drier summer months. Humidity levels also rise, averaging 83%, adding a touch of dampness to the air. This mix of warm days and cooler nights creates a unique charm in Heiligenhafen, perfect for those looking to enjoy the beauty of the changing seasons. For a deeper understanding of the weather patterns throughout the year, visit Heiligenhafen Climate.