September Weather in Klagenfurt am Woerthersee, Austria

Last updated: February 26, 2025

September in Klagenfurt am Wörthersee, Austria offers a captivating blend of late summer warmth and early autumn chill. With maximum temperatures reaching a pleasant 27°C (81°F), residents and visitors can still bask in the sun, while average temperatures hover around 14°C (58°F). However, the season isn't without its challenges, as the region experiences approximately 186 mm (7.3 in) of rainfall over 13 days, resulting in a humidity level of 74% that can add a crispness to the air. This transitional month invites exploration of the scenic landscapes dotting the area, making it an ideal time to experience the unique beauty of Klagenfurt.

September Temperature in Klagenfurt am Woerthersee

In September, Klagenfurt am Woerthersee begins to usher in the crispness of autumn, showcased by temperatures that range from a cool 1°C (34°F) at night to a pleasant 27°C (81°F) during the day. With an average temperature of 14°C (58°F), the month marks a significant transition from the warmth of summer, offering a comfortable climate ideal for outdoor activities. As summer's peak heat dissipates, the lingering warmth invites visitors to explore the scenic beauty of the region while enjoying the mild weather. This changing season reflects a gradual drop in temperature, hinting at the colder months ahead, while showcasing the stunning natural landscapes that come alive during this picturesque time of year.

September Weather in Klagenfurt am Woerthersee: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Klagenfurt am Woerthersee, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec283339485564666658494030
Data source: Temperature data for Klagenfurt am Woerthersee 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 Klagenfurt am Woerthersee

In September, Klagenfurt am Woerthersee experiences a significant transition as summer begins to wane, mirrored in its precipitation levels. With 186 mm (7.3 in) of rain falling over 13 days, September stands out as a month of substantial wetness, continuing the trend set by the preceding months of July and August, which also boasted high precipitation amounts. This increasing precipitation hints at the region's shift towards autumn, where weather patterns often become more pronounced. As the year winds down, the steady rainfall plays a vital role in preparing the landscape for the cooler months ahead, fostering a lush, green environment in this picturesque setting.

September Precipitation Trends in Klagenfurt am Woerthersee

The chart displays monthly precipitation patterns in Klagenfurt am Woerthersee, 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.
JanFebMarAprMayJunJulAugSepOctNovDec47766910117112114119318694139114
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Klagenfurt am Woerthersee

As summer gives way to autumn in Klagenfurt am Woerthersee, September experiences a modest humidity level of 74%. This marks a slight increase from the drier months of July and August, which saw humidity dipping to 74% and 68%, respectively. The transition into fall is evident as humidity levels begin to trend upward, hinting at the return of the more humid conditions typical of the approaching winter months. By October, the humidity rises significantly to 88%, paving the way for the chilly, damp air characteristic of the season. This gradual shift showcases Klagenfurt's dynamic weather patterns, where warm summer days yield to the crisp, humid embrace of autumn.

September Average Humidity in Klagenfurt am Woerthersee

This chart illustrates the average monthly humidity levels in Klagenfurt am Woerthersee, 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%87%82%79%74%75%74%69%74%88%90%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Klagenfurt am Woerthersee

As autumn approaches, September in Klagenfurt am Woerthersee sees a notable transition in UV exposure, with a UV Index of 7, categorized as high. This marks a slight decline from the peak summer months, yet still signifies a strong need for sun protection, as the burn time reduces to 25 minutes for unprotected skin. The trend throughout the year reflects a gradual increase in UV intensity from winter to summer, peaking in June and July before tapering off in the fall. With UV levels remaining high in September, it's essential to remain vigilant about sun safety as you enjoy the beautiful early autumn days. For more detailed information, visit Klagenfurt am Woerthersee UV Index.

Maximum UV Index Levels in Klagenfurt am Woerthersee for September

The chart shows the monthly maximum UV Index (UVI) for Klagenfurt am Woerthersee 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.
JanFebMarAprMayJunJulAugSepOctNovDec235689987432
Data source: Klagenfurt am Woerthersee 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 Klagenfurt am Woerthersee

As summer gently transitions to autumn, September in Klagenfurt am Woerthersee offers a delightful blend of sunshine and comfortable temperatures, boasting an impressive 309 hours of sunshine. This month reflects a notable decline from the peak of July's 415 hours, yet it remains radiant compared to the task of dreariness that winter brings. The sun-drenched days invite locals and visitors alike to enjoy the scenic lakes and surrounding landscapes, capturing the lingering warmth before the brisk October chill sets in. With September's sunshine, you can relish in the beauty of a slowly shifting season, where the vibrant hues of autumn begin to emerge, reminding us of nature's constant cycle.

Monthly Sunshine Duration in Klagenfurt am Woerthersee: September Highlighted

The September sunshine duration represents the total number of hours Klagenfurt am Woerthersee 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.
JanFebMarAprMayJunJulAugSepOctNovDec178h215h300h331h355h396h415h382h309h275h194h202h
Data source: Klagenfurt am Woerthersee September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Klagenfurt am Woerthersee During September

In Klagenfurt am Wörthersee, September enjoys a 44% chance of sunshine, making it a promising month for enjoying the outdoors. This likelihood is a slight uptick from the summer months, where July and August present lower rates of sun, at 42% and 38%, respectively. However, September's sunshine potential is notably higher than the spring months, suggesting a shift towards more favorable weather as the season transitions into autumn. While not the sunniest month on record, September still invites residents and visitors alike to savor the lingering warmth and vibrant scenery before the cooler temperatures set in. With a weather pattern that shows a gradual increase towards autumn, Klagenfurt am Wörthersee remains an appealing destination for those seeking sunny days amid the transition of seasons.

Percentage of Sunny Days in September in Klagenfurt am Woerthersee

The chart illustrates the percentage of sunny days in Klagenfurt am Woerthersee 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 Klagenfurt am Woerthersee experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec20%40%53%33%29%47%42%38%44%30%21%27%
Data source: Klagenfurt am Woerthersee September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Klagenfurt am Woerthersee in September

As summer fades into autumn, September in Klagenfurt am Woerthersee sees a noticeable shift in daylight duration, offering about 12 hours of sunlight. This marks a gentle decline from the vibrant 15 hours experienced during the peak of summer in June, July, and early August. The transition reflects the gradual approach of autumn, with sunlight diminishing as the days shorten. Despite this reduction, September's daylight remains generous compared to the winter months, where daylight drops to a mere 8 hours in December. Thus, this month serves as a beautiful bridge, blending the warmth of summer's light with the crisp anticipation of autumn, encouraging residents and visitors alike to enjoy the outdoors before the evenings grow longer and cooler.

Average Daylight Hours in Klagenfurt am Woerthersee for September

The chart illustrates the variation in daylight duration in Klagenfurt am Woerthersee throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 1m10h 18m11h 56m13h 36m15h 1m15h 45m15h 22m14h 6m12h 30m10h 50m9h 23m8h 37m
Data source: Klagenfurt am Woerthersee daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Klagenfurt am Woerthersee

As September settles in Klagenfurt am Woerthersee, the winds continue to whisper gently, with an average speed of 1.4 m/s (3 mph). This subtle breeze mirrors the previous months, maintaining a refreshing consistency that characterizes the late summer transition into autumn. Although the wind speeds dip slightly from the livelier summer months, they remain fairly steady compared to the fluctuations earlier in the year. With autumn's approach, this moderate air movement enhances the serene beauty of the region, inviting both locals and visitors to revel in the picturesque landscapes that surround the shimmering lake.

Average September Wind Speed in Klagenfurt am Woerthersee

The chart displays monthly wind speed patterns in Klagenfurt am Woerthersee, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.41.71.61.71.61.51.61.31.4 m/s1.51.31.4
Data source: Klagenfurt am Woerthersee September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Klagenfurt am Woerthersee Compares to Other Months

The weather in Klagenfurt am Woerthersee 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 Klagenfurt am Woerthersee and find detailed weather information for every month.

September in Klagenfurt am Woerthersee is characterized by milder temperatures, with a minimum of 1°C (34°F) and an average of 14°C (58°F), reaching a maximum of 27°C (81°F). The month sees considerable rainfall, totaling 186 mm (7.3 in) over approximately 13 days, and a humidity level of 74%. In contrast, January experiences much colder weather, with temperatures ranging from a low of -18°C (0°F) to an average of -2°C (28°F), peaking at 10°C (50°F). Precipitation in January is significantly lower at 47 mm (1.8 in) over just 5 days, while humidity rises to 91%. For a more detailed look at January conditions, you can check this link: Klagenfurt am Woerthersee weather in January.

September and February showcase stark contrasts in weather conditions. In September, temperatures range from a chilly 1°C (34°F) at night to a warm 27°C (81°F) during the day, with an average of 14°C (58°F). The month is relatively wet, featuring 186 mm (7.3 in) of precipitation over 13 days and a humidity level of 74%. In contrast, February presents a much colder climate, with nighttime lows plunging to -21°C (-6°F) and daytime highs peaking at just 16°C (61°F), averaging around 1°C (33°F). It is notably drier, with only 76 mm (3.0 in) of rain spread over 7 days, yet the humidity spikes to 87%. For a closer look at February weather specifics, visit Klagenfurt am Woerthersee weather in February.

In September, the weather presents a noticeable warmth with average temperatures around 14°C (58°F) and maximums reaching up to 27°C (81°F), making it quite pleasant for outdoor activities. However, it does experience considerable precipitation, totaling 186 mm (7.3 in) over about 13 days, coupled with a humidity level of 74%. In contrast, March is significantly colder, with average temperatures only reaching 4°C (39°F) and nighttime lows plummeting to -15°C (5°F). The month sees much less precipitation, at 69 mm (2.7 in) spread over 10 days, but humidity is slightly higher at 82%. For more detailed information, check out Klagenfurt am Woerthersee weather in March.

When comparing the weather in September and April, several notable differences emerge. September generally boasts a milder average temperature of 14°C (58°F) with maximums reaching up to 27°C (81°F), while April's average drops to 9°C (48°F), peaking at 25°C (77°F). Precipitation is significantly higher in September, with 186 mm (7.3 in) spread over 13 days, compared to April's 101 mm (4.0 in) over just 12 days. Additionally, April experiences slightly higher humidity at 79%, compared to 74% in September. For more detailed information, you can check Klagenfurt am Woerthersee weather in April.

When comparing the weather in September and May, we find similarities and notable differences in temperature and precipitation patterns. In both months, high temperatures reach a pleasant 27°C (81°F), but September tends to have a slightly warmer average temperature of 14°C (58°F) compared to May's 13°C (55°F). However, May experiences colder minimum temperatures, dropping to -1°C (30°F), compared to September's minimum of 1°C (34°F).

Precipitation levels are also noteworthy; September sees 186 mm (7.3 in) of rain over 13 days, while May has a bit less at 171 mm (6.7 in) over 20 days, indicating that May tends to be wetter but with fewer intense rain days. Humidity remains constant at 74% for both months. For a detailed insight into May's weather, visit Klagenfurt am Woerthersee weather in May.

In comparing the weather between June and September, June tends to be warmer with average temperatures around 18°C (64°F), peaking at 32°C (91°F), while September experiences cooler conditions, with average temperatures of 14°C (58°F) and a maximum of 27°C (81°F). Both months see a good amount of rainfall, but September has higher precipitation at 186 mm (7.3 in) over 13 days compared to June's 121 mm (4.8 in) over 15 days. Humidity levels remain relatively similar, with September at 74% and June at 75%. For a detailed look at June's weather specifically, you can visit this link: Klagenfurt am Woerthersee weather in June.

September weather contrasts with July in several notable ways. While July features a warmer climate with average temperatures around 19°C (66°F) and maximums reaching up to 30°C (87°F), September cools down significantly with an average of 14°C (58°F) and maximums peaking at 27°C (81°F). Precipitation is more frequent in September, with 186 mm (7.3 in) over 13 days compared to July's 141 mm (5.6 in) over 16 days. Both months share the same humidity level of 74%, contributing to a generally damp feel as summer transitions into autumn. For a more detailed view of July's weather, you can visit Klagenfurt am Woerthersee weather in July.

In comparison to August, September experiences cooler temperatures, with a minimum of 1°C (34°F) and an average of 14°C (58°F), compared to August's minimum of 6°C (43°F) and average of 19°C (66°F). The maximum temperatures in September reach 27°C (81°F), which is significantly lower than August's peak of 33°C (91°F). Additionally, September has slightly less precipitation, at 186 mm (7.3 in) over 13 days, compared to August's 193 mm (7.6 in) spread over 16 days. Humidity levels are higher in September at 74%, while August's humidity sits at 68%. For a detailed look at August's weather, check out Klagenfurt am Woerthersee weather in August.

September and October weather show a notable transition as autumn takes hold. September experiences a wider temperature range, with minimums around 1°C (34°F) and maximums reaching up to 27°C (81°F), alongside an average temperature of 14°C (58°F). In contrast, October's temperatures dip further, with minimums dropping to -2°C (29°F) and averages falling to 10°C (50°F), while the maximum temperature settles at 22°C (71°F).

Precipitation also decreases in October, with 94 mm (3.7 in) over 9 days compared to September's 186 mm (7.3 in) over 13 days. Additionally, humidity levels rise in October to 88%, compared to September's 74%. This shift marks a significant change in both temperature and precipitation patterns as fall progresses. For more details about the weather in October, you can check Klagenfurt am Woerthersee weather in October.

September and November present contrasting weather patterns. In September, temperatures range from a minimum of 1°C (34°F) to a maximum of 27°C (81°F), with an average of 14°C (58°F). This month experiences a significant amount of precipitation at 186 mm (7.3 in) over 13 days, coupled with a moderate humidity level of 74%. In contrast, November sees a marked drop in temperatures, with a minimum of -12°C (11°F) and an average temperature of only 4°C (40°F), peaking at 18°C (65°F). Precipitation decreases to 139 mm (5.5 in) over 11 days, but humidity rises to a high of 90%. For more detailed weather information, you can visit Klagenfurt am Woerthersee weather in November.

September and December in Klagenfurt am Woerthersee present stark contrasts in weather. September enjoys milder temperatures with a minimum of 1°C (34°F) and an average of 14°C (58°F), peaking at 27°C (81°F), accompanied by relatively high humidity at 74% and significant rainfall of 186 mm (7.3 in) over 13 days. In contrast, December plunges into winter with temperatures ranging from a minimum of -18°C (0°F) to a maximum of 10°C (51°F), averaging -1°C (31°F). The month sees a reduction in precipitation to 114 mm (4.5 in) over 10 days, but the humidity increases to 89%, contributing to a colder and crisper atmosphere. For more detailed insights, check out Klagenfurt am Woerthersee weather in December.

Compare Klagenfurt am Woerthersee's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Klagenfurt am Woerthersee

As summer transitions into autumn, Klagenfurt am Woerthersee experiences a notable change in weather throughout September. While the days can still warm up to a pleasant 27°C (81°F), the overall average temperature dips to a cooler 14°C (58°F), reflecting the season's shift. Rainfall is also more frequent, with September seeing around 13 days of precipitation totaling 186 mm (7.3 in), creating a more humid atmosphere at 74%. This blend of warm and cool temperatures, alongside increased rainfall, sets September apart from the sunnier and drier summer months. To explore more about the overall climate patterns in this beautiful region, visit Klagenfurt am Woerthersee Climate.