September Weather in Erlangen, Germany

Last updated: February 26, 2025

In Erlangen, Germany, September presents a captivating transition into autumn, showcasing a diverse range of temperatures from a maximum of 30°C (85°F) to a minimum of 1°C (34°F). The average temperature hovers around 15°C (59°F), providing a comfortable climate for outdoor activities. While rainfall amounts to 55 mm (2.1 in) over 9 days, the month is often marked by high humidity levels at 85%, adding a touch of crispness to the air. This blend of warmth and moisture creates a unique atmosphere, making September a delightful month to explore the charming landscapes and cultural offerings of Erlangen.

September Temperature in Erlangen

In Erlangen, Germany, September marks a delightful transition into autumn, with temperatures gradually cooling from the summer highs. The month showcases a minimum temperature of 1°C (34°F), while daytime averages reach a comfortable 15°C (59°F), allowing for pleasant outdoor activities. The maximum temperatures can soar to 30°C (85°F), reminiscent of the lingering warmth of summer. As the month progresses, the crispness in the air hints at the approaching fall, making September a beautiful blend of warmth and refreshing coolness, perfect for enjoying the scenic landscapes and cultural events in this vibrant region.

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

The chart illustrates September temperature patterns in Erlangen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec343641495665666758514136
Data source: Temperature data for Erlangen generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Erlangen

In September, Erlangen experiences a moderate level of precipitation, totaling 55 mm (2.1 in) over 9 days. This marks a slight decrease compared to the preceding months, aligning with the trend of transitioning from the summer months, which saw heavier rains, like 95 mm in May and 88 mm in June. As summer fades, the frequency of rainy days tends to drop, evidenced by September's nine rainfall days, the lowest since April. This shift hints at the beginning of autumn, characterized by gradually dwindling rain totals as the city prepares for the wetter months ahead.

September Precipitation Trends in Erlangen

The chart displays monthly precipitation patterns in Erlangen, 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.
JanFebMarAprMayJunJulAugSepOctNovDec6960693795888177556449101
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Erlangen

In Erlangen, Germany, September marks a subtle shift in humidity, with levels averaging around 85%. This is a slight increase from the consistently lower figures in late summer, showcasing the transition into the more humid autumn months. As the year progresses, the humidity typically rises, peaking in the winter months—January and December boast damp conditions at 91%. Meanwhile, summer months see a more moderate humidity, with July and August hovering around 83% to 84%. Overall, the data reveals a trend of increasing humidity from late spring through early fall, culminating in the highest moisture levels as the year comes to a close.

September Average Humidity in Erlangen

This chart illustrates the average monthly humidity levels in Erlangen, 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.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%88%84%77%82%83%84%85%88%88%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Erlangen

As we transition into September in Erlangen, Germany, the UV Index remains high at 6, indicating a need for caution during sun exposure. This marks a gradual decline from the peak of summer, where exceptional UV levels hovered around 8 for many months, allowing for only 15 minutes of safe sun exposure. In contrast, September allows for a longer burn time of 25 minutes without immediate risk, although vigilance is still necessary. With autumn approaching, the UV Index will continue to decrease, paving the way for more moderate exposure levels in October and beyond. For a deeper dive into the UV Index throughout the year, check out Erlangen UV Index.

Maximum UV Index Levels in Erlangen for September

The chart shows the monthly maximum UV Index (UVI) for Erlangen 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.
JanFebMarAprMayJunJulAugSepOctNovDec235688876421
Data source: Erlangen 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 Erlangen

As summer gives way to autumn, September in Erlangen, Germany offers a delightful transition marked by 315 hours of sunshine. This vibrant month showcases a significant dip from the sun-drenched peak of July, which boasts 419 hours, yet remains a bright beacon compared to the dreariness of winter months. The warmth lingers from August with 383 hours, creating a sense of mellow and comfortable days that invite outdoor adventuring. This sunshine trend illustrates a gradual decline as September elegantly bridges the gap towards the cooler, cloudier days of October, which brings only 257 hours. Overall, September embodies a beautiful balance, allowing residents and visitors to savor those golden rays before they fade into the crispness of fall.

Monthly Sunshine Duration in Erlangen: September Highlighted

The September sunshine duration represents the total number of hours Erlangen 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.
JanFebMarAprMayJunJulAugSepOctNovDec108h207h269h348h377h394h419h383h315h257h170h128h
Data source: Erlangen September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Erlangen During September

As summer transitions into fall, September in Erlangen, Germany offers a noteworthy shift in sunny days, boasting a 42% chance of sunshine. This figure marks a significant uplift compared to the preceding months, where the likelihood hovered between 29% and 41%. The increase reflects a trend of early autumn warmth, making September one of the more favorable months for enjoying the outdoors before the harsher winter months set in. With October's chance of sun dipping back to 32%, September stands out as a golden opportunity for those seeking to soak up the last rays of summer.

Percentage of Sunny Days in September in Erlangen

The chart illustrates the percentage of sunny days in Erlangen 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 Erlangen experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec13%33%41%40%30%32%32%29%42%32%17%12%
Data source: Erlangen September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Erlangen in September

As summer fades in Erlangen, Germany, September brings a gentle transition that sees daylight hours decrease to 12 hours. Building on the lush brightness of June, which boasts an impressive 16 hours of daylight, the days gradually shorten as autumn approaches. This trend reflects the gradual shift from the sun-soaked months of May and June, with each month tapering off just slightly, showcasing a rhythm of nature that highlights the changing seasons. A decline from 15 hours in July and 14 hours in August, September offers a softer daylight experience, hinting at the coziness of fall while still retaining a healthy amount of sunlit hours for outdoor exploration and vivid autumn scenery.

Average Daylight Hours in Erlangen for September

The chart illustrates the variation in daylight duration in Erlangen throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 39m10h 6m11h 55m13h 46m15h 22m16h 12m15h 46m14h 20m12h 33m10h 42m9h 4m8h 11m
Data source: Erlangen daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Erlangen

As September unfolds in Erlangen, Germany, residents experience a subtle shift in the seasonal breeze. The average wind speed dips to 2.1 m/s (5 mph), making it one of the calmest months of the year. This gentle air movement, slightly lower than the preceding summer months, encourages cozy outdoor activities, where the crispness of autumn begins to intertwine with the remnants of warmer days. Observing the trends throughout the year, September’s mellow winds contrast notably with the breezier spring months, such as the steady 3.5 m/s (8 mph) in May. This transition signals the approach of the cooler October breeze, while inviting locals to relish the serene charm of early fall.

Average September Wind Speed in Erlangen

The chart displays monthly wind speed patterns in Erlangen, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.32.92.92.93.52.22.22.52.1 m/s2.82.63.0
Data source: Erlangen September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Erlangen Compares to Other Months

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

September and January present contrasting weather experiences. In September, temperatures range from a mild 1°C (34°F) at night to a warm 30°C (85°F) during the day, with an average resting at around 15°C (59°F). The month typically experiences about 55 mm (2.1 in) of rainfall over 9 days, and humidity levels hover around 85%. In stark contrast, January brings much colder conditions, with temperatures dipping as low as -13°C (9°F) and peaking at only 13°C (56°F), averaging just 1°C (34°F). This winter month sees slightly higher precipitation at 69 mm (2.7 in) across 13 days, along with increased humidity at 91%. For more details, you can check the Erlangen weather in January.

September and February present striking contrasts in weather. In September, temperatures typically range from a minimum of 1°C (34°F) to a comfortable average of 15°C (59°F), peaking at a warm 30°C (85°F). The month sees about 55 mm (2.1 in) of precipitation over 9 days, with humidity levels around 85%. In contrast, February experiences much colder conditions, with temperatures dipping to a minimum of -17°C (1°F) and averaging just 2°C (37°F), while highs reach only 19°C (66°F). This month witnesses slightly higher precipitation at 60 mm (2.4 in) spread over 10 days, and humidity climbs to 89%. For more insights on February's climate, visit Erlangen weather in February.

The weather in September is generally warmer than in March, with September temperatures ranging from a chilly 1°C (34°F) at night to a comfortable 30°C (85°F) during the day, while March experiences colder nights with temperatures dipping to -13°C (9°F) and daytime highs reaching a mild 21°C (71°F). Additionally, September has less precipitation at 55 mm (2.1 in) over about 9 days, compared to March, which sees a little more rain at 69 mm (2.7 in) across approximately 14 days. Humidity levels are similar, with September at 85% and March slightly higher at 88%. For more detailed insights into March weather specifically, you can check Erlangen weather in March.

When comparing the weather in September and April, it’s evident that September generally features warmer temperatures. In September, the minimum temperature hovers around 1°C (34°F) while the average reaches 15°C (59°F), peaking at a maximum of 30°C (85°F). In contrast, April experiences colder conditions, with minimum temperatures dropping to -6°C (22°F), an average of 9°C (49°F), and a high of 27°C (80°F). Rainfall is slightly higher in September, with 55 mm (2.1 in) over 9 days, compared to April's 37 mm (1.4 in) over 8 days. Both months showcase high humidity levels, with September at 85% and April at 84%. To explore more about the weather specifics in April, you can visit Erlangen weather in April.

When comparing the weather in September and May, some intriguing differences emerge. September experiences a slightly broader temperature range, with minimums dipping to 1°C (34°F) and maximums reaching up to 30°C (85°F). In contrast, May starts off a tad cooler, with temperatures dropping to -1°C (30°F) but also hitting a peak of 30°C (86°F). Precipitation is another factor where May takes the lead, accumulating 95 mm (3.7 in) over 14 days, compared to September's 55 mm (2.1 in) across 9 days. Additionally, the humidity in September is notably higher at 85% compared to May's 77%. For a detailed look at May's specific weather patterns, check out Erlangen weather in May.

In comparing the weather between September and June, September tends to have cooler temperatures, with a minimum of 1°C (34°F) compared to June's minimum of 4°C (40°F). The average temperature in September is 15°C (59°F), which is slightly lower than June's average of 19°C (66°F). Additionally, September experiences a maximum of 30°C (85°F), while June can reach up to 35°C (94°F). Precipitation is also notable, with September receiving 55 mm (2.1 in) over 9 days, whereas June has higher rainfall totaling 88 mm (3.5 in) across 11 days. Humidity levels are fairly similar, at 85% in September and 82% in June. For more detailed insights, you may visit Erlangen weather in June.

In comparing the weather between September and July, September generally experiences milder temperatures, with a minimum of 1°C (34°F) and an average of 15°C (59°F). In contrast, July sees warmer conditions, featuring a minimum of 6°C (44°F) and an average of 19°C (67°F), reaching up to a maximum of 36°C (98°F). Additionally, September has slightly less precipitation at 55 mm (2.1 in) over about 9 days, compared to July’s 81 mm (3.2 in) across 12 days. Humidity levels are quite similar, with September at 85% and July at 83%. For detailed insights, you can check Erlangen weather in July.

In comparing the weather of September and August, September tends to be cooler, with a minimum temperature dropping to 1°C (34°F) compared to August's minimum of 7°C (45°F). The average temperature in September is around 15°C (59°F), while August boasts a warmer average of 19°C (67°F). Although September's maximum temperature can reach up to 30°C (85°F), August's peak can be as high as 35°C (95°F). Precipitation is also slightly lower in September, with 55 mm (2.1 in) over 9 days, in contrast to August's 77 mm (3.0 in) over 12 days. Humidity levels are quite similar, remaining around 85% in September and 84% in August. For more detailed information, you can check Erlangen weather in August.

In September, the weather is generally warmer with average temperatures around 15°C (59°F) and daytime highs reaching up to 30°C (85°F). However, it also sees considerable humidity at 85% and experiences about 55 mm (2.1 in) of precipitation over 9 days. In contrast, October brings cooler conditions, with average temperatures dropping to 10°C (51°F) and maximums of 24°C (76°F). The month welcomes slightly more rainfall, totaling 64 mm (2.5 in) over 11 days, and humidity increases to 88%. For more details, you can check out Erlangen weather in October.

In September, weather in Erlangen tends to be warmer with temperatures ranging from a minimum of 1°C (34°F) to a maximum of 30°C (85°F), and an average temperature of 15°C (59°F). The month experiences a moderate amount of precipitation at 55 mm (2.1 in) over about 9 days, along with a high humidity level of 85%.

Conversely, November brings a notable drop in temperatures, with daily averages around 5°C (41°F), and a minimum of -4°C (25°F) accompanied by a maximum of 20°C (68°F). The precipitation is slightly lower at 48 mm (1.9 in) spread over 10 days, and humidity rises marginally to 88%. For more detailed insights into November weather, check out Erlangen weather in November.

September and December display quite contrasting weather patterns. In September, temperatures range from a minimum of 1°C (34°F) to a maximum of 30°C (85°F), with an average of 15°C (59°F). The month experiences relatively lower humidity at 85% and moderate precipitation of 55 mm (2.1 in) over about 9 days. In stark contrast, December sees a significant drop in temperatures, with a minimum of -9°C (16°F), an average of 2°C (36°F), and a maximum of only 13°C (56°F). Additionally, December is much wetter, accumulating 101 mm (4.0 in) of precipitation over 17 days and features higher humidity at 91%. For more detailed insights into December's conditions, check out Erlangen weather in December.

Compare Erlangen's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Erlangen

As summer bids farewell, September in Erlangen introduces a delightful transition with its comfortably mild temperatures and refreshing breezes. Unlike the scorching highs of August, this month showcases a broader range, making outdoor activities a pleasure. While occasional rain—averaging about 55 mm—adds a touch of autumnal charm, the significant humidity often enhances the feel of warmth during the day. As September unfolds, it sets the stage for crisper air and the vibrant colors of fall, marking a distinct shift from the previous months. For a comprehensive look at how this fits into the broader climate trends, visit Erlangen Climate.