September Weather in Vaduz, Liechtenstein

Last updated: August 21, 2025

September in Vaduz, Liechtenstein, showcases a captivating transition into autumn, with maximum temperatures reaching 25°C (78°F) and average readings around 13°C (55°F). This month also greets visitors with a refreshing contrast, where temperatures can dip to a cool minimum of 0°C (32°F). Rainfall is a prominent feature, totaling 158 mm (6.2 in) over 16 precipitation days, creating a lush, vibrant atmosphere. With humidity levels at 83%, the air carries a crisp, invigorating quality, making September an ideal time to explore the natural beauty of this enchanting region.

September Temperature in Vaduz

In September, Vaduz, Liechtenstein, transitions into the whisper of autumn, with temperatures ranging from a cool 0°C (32°F) at night to a pleasant 25°C (78°F) during the day. This month experiences an inviting average temperature of 13°C (55°F), making it a perfect time for exploring the lush landscapes and scenic views. As the warmth of summer begins to recede, you can still enjoy mild days, characterized by comfortable afternoons and crisp evenings. Compared to the warmer months preceding it, September marks a distinct shift, gracefully inviting the cooler breezes that herald the approaching fall while maintaining a refreshing charm for visitors and locals alike.

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

The chart illustrates September temperature patterns in Vaduz, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vaduz, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec283338455261626255483931
Data source: Temperature data for Vaduz 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 Vaduz

In September, Vaduz experiences a significant amount of rainfall, with 158 mm (6.2 in) accumulated over 16 days, marking a continuation of the wet season that peaks in the summer months. Compared to the preceding months, September hosts a reduction in rainfall from the intense downpours of August, which recorded 233 mm (9.2 in). However, it still maintains a robust precipitation level, reflecting the transition into autumn. This month’s moderate rainfall and diminishing precipitation days signal a gradual shift towards drier conditions in October, suggesting a seasonal change that many locals anticipate as the vibrant summer landscape gives way to the crisp charms of fall.

September Precipitation Trends in Vaduz

The chart displays monthly precipitation patterns in Vaduz, 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 Vaduz, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec1359712310318319121123315814288156
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Vaduz

As summer transitions into autumn, September in Vaduz boasts a humidity level of 83%, which is a slight increase from the 80% observed in August. This rise in humidity reflects a gradual return to the wetter conditions often experienced in the colder months. The trend of higher humidity, typical from October through the winter, is becoming more evident as the year progresses. In contrast to the dry spring months, where humidity dipped to around 80% in May and June, September signals a shift back towards the more moisture-laden air typical of the region, preparing Vaduz for the cooler, more humid months that lie ahead.

September Average Humidity in Vaduz

This chart illustrates the average monthly humidity levels in Vaduz, 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 Vaduz is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%89%87%84%80%82%83%80%83%90%89%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Vaduz

As September rolls into Vaduz, Liechtenstein, the UV Index shows a notable decline from the peak summer months, settling at 7, which falls into the high exposure category. With a burn time of just 25 minutes, it’s essential to remain vigilant about sun protection during this period. Unlike the very high levels of 8 and 10 seen in July and August, September still requires caution as you enjoy outdoor activities in the mild autumn sun. This transition reflects a gradual cooling pattern, yet UV rays remain potent, reminding us to stay sun-smart. For more information on the UV Index throughout the year, visit Vaduz UV Index.

Maximum UV Index Levels in Vaduz for September

The chart shows the monthly maximum UV Index (UVI) for Vaduz 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 Vaduz typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24678101087532
Data source: Vaduz 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 Vaduz

As September unfolds in Vaduz, Liechtenstein, the city basks in a delightful symphony of sunshine, boasting 316 hours of sunlight. This marks a gentle tapering from the height of summer in July, where the sun graced its residents with 409 hours. The month stands as a transition point, bridging the warm, vibrant days of summer with the cooler hues of autumn. While daylight begins to wane compared to the peak months of June and July, September still enjoys a generous amount of sunshine, reflecting a comforting glow that invites outdoor exploration and picturesque moments amidst the stunning alpine backdrop. As the seasons shift, the beautiful contrast from the previous month's 376 hours hints at the inevitable embrace of autumn, yet still celebrates the lingering warmth of summer's end.

Monthly Sunshine Duration in Vaduz: September Highlighted

The September sunshine duration represents the total number of hours Vaduz 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.
JanFebMarAprMayJunJulAugSepOctNovDec170h235h306h357h370h390h409h376h316h282h223h192h
Data source: Vaduz September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Vaduz During September

September in Vaduz, Liechtenstein, emerges as a promising month for sunshine lovers, with a 42% chance of sunny weather. This marks a slight increase from the summer months of July and August, where the chances lingered around the low 30s. As autumn approaches, there's a noticeable upswing in sunny days compared to the earlier months of the year, such as January and February, which struggle beneath the weight of clouds. Overall, as the season transitions, September embodies a sweet spot with its inviting blend of sun and milder temperatures, making it an appealing time to explore the scenic beauty of this Alpine gem.

Percentage of Sunny Days in September in Vaduz

The chart illustrates the percentage of sunny days in Vaduz 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 Vaduz experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec18%40%41%43%30%32%30%31%42%37%31%35%
Data source: Vaduz September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Vaduz in September

As summer fades into autumn in Vaduz, Liechtenstein, September witnesses a gentle decline in daylight, with the sun gracing the city for 12 hours a day. This shift marks a transition from the long, sun-drenched days of June through August, where residents enjoyed up to 15 hours of daylight. With each passing month, daylight dwindles, beginning with 8 hours in January and culminating in 10 hours in October. The gradual ebb of sunlight serves as a reminder of the approaching winter months, yet September still offers a beautiful blend of lingering warmth and early fall colors, providing a perfect backdrop for outdoor adventures before the shorter days fully set in.

Average Daylight Hours in Vaduz for September

The chart illustrates the variation in daylight duration in Vaduz throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 57m10h 16m11h 56m13h 38m15h 5m15h 50m15h 26m14h 8m12h 30m10h 49m9h 19m8h 32m
Data source: Vaduz daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Vaduz

As September unfolds in Vaduz, Liechtenstein, the wind whispers softly at an average speed of 1.2 m/s (3 mph). This gentle breeze marks a slight decline from the summer months, where consistent winds hovered around 1.1 m/s in August. The trend reveals a subtle ebb in the air's movement, transitioning from the balmy summer days into the refreshing embrace of autumn. Compared to the earlier months of the year, when wind speeds fluctuated between 1.2 and 1.5 m/s, September offers a serene yet invigorating atmosphere, inviting locals and visitors alike to enjoy the crispness of the season while savoring the stunning views of the surrounding landscapes.

Average September Wind Speed in Vaduz

The chart displays monthly wind speed patterns in Vaduz, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.41.51.31.41.51.21.21.11.2 m/s1.41.21.5
Data source: Vaduz September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Vaduz Compares to Other Months

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

In September, the weather typically features milder temperatures, with a minimum of 0°C (32°F) and an average of 13°C (55°F), reaching a maximum of 25°C (78°F). However, it is also a relatively wet month, with 158 mm (6.2 in) of precipitation spread over 16 days and a humidity level of 83%. In contrast, January brings much colder conditions, with temperatures ranging from a minimum of -23°C (-9°F) to an average of -2°C (29°F) and a maximum of 11°C (52°F). Despite being drier with only 134 mm (5.3 in) of precipitation over 12 days, January's humidity is slightly higher at 92%. For more detailed information about the weather in January, check out Vaduz weather in January.

September and February present a stark contrast in weather patterns. In September, temperatures range from a minimum of 0°C (32°F) to a maximum of 25°C (78°F), with an average of 13°C (55°F). The month sees about 158 mm (6.2 in) of precipitation over 16 days, and humidity levels are relatively high at 83%. In contrast, February experiences much colder temperatures, with a minimum of -18°C (0°F), an average of 0°C (33°F), and a maximum of 16°C (61°F). This winter month has lower precipitation, totaling 97 mm (3.8 in) over 12 days, while humidity rises slightly to 89%. For a detailed look at the weather in February, you can refer to Vaduz weather in February.

When comparing the weather in September and March, significant differences emerge. September boasts milder temperatures, ranging from a minimum of 0°C (32°F) to a maximum of 25°C (78°F), with an average of 13°C (55°F). In contrast, March presents a chillier climate, with temperatures dipping as low as -20°C (-4°F) and peaking at 18°C (65°F), averaging around 3°C (38°F). Precipitation is notable in both months; however, September receives more rain, totaling 158 mm (6.2 in) over 16 days, while March sees 123 mm (4.8 in) across 17 days, contributing to higher humidity levels of 87%. For more detailed insights into March weather, you can check Vaduz weather in March.

In comparing the weather of September and April, it’s notable that September generally experiences milder temperatures, with a minimum of 0°C (32°F) and an average of 13°C (55°F), while April's temperatures can drop as low as -12°C (11°F) with an average of only 7°C (45°F). Despite the warmer conditions in September, both months share a relatively high humidity level, September at 83% and April at 84%. Precipitation is more abundant in September, totaling 158 mm (6.2 in) across 16 days, compared to April's 103 mm (4.0 in) over 12 days. For a more detailed overview of April weather in Vaduz, you can check Vaduz weather in April.

When comparing the weather in September and May, there are notable differences in temperature and precipitation patterns. September boasts a more moderate temperature range with a minimum of 0°C (32°F) and a maximum of 25°C (78°F), resulting in a comfortable average of 13°C (55°F). In contrast, May experiences cooler nights with a minimum of -6°C (21°F), but can warm up to 28°C (83°F) during the day, leading to an average temperature of 11°C (52°F).

In terms of precipitation, September sees 158 mm (6.2 in) over 16 days, while May has slightly higher precipitation at 183 mm (7.2 in) spread across 21 days. Both months have relatively high humidity, with September at 83% and May at 80%. For more detailed information on May weather specifics, you can refer to Vaduz weather in May.

September weather is generally cooler than June, with average temperatures ranging from a minimum of 0°C (32°F) to a maximum of 25°C (78°F), compared to June's range of 2°C (36°F) to 31°C (88°F). While both months experience considerable rainfall, September sees slightly less precipitation overall, averaging 158 mm (6.2 in) over 16 days, whereas June has 191 mm (7.5 in) across 19 days. Humidity levels are similar in both months, with September at 83% and June at 82%. For a detailed look at weather trends in June, you can check Vaduz weather in June.

When comparing the weather in September to that of July, we see notable differences. September experiences cooler temperatures, with a minimum of 0°C (32°F) and an average of 13°C (55°F), while July boasts warmer conditions, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 31°C (88°F). Precipitation is also more prominent in July, totaling 211 mm (8.3 in) over 20 days, compared to September's 158 mm (6.2 in) over 16 days. Both months share similar humidity levels at 83%, but July's warmth and higher rainfall contribute to a distinctly different climate experience. For more details on July weather, check out Vaduz weather in July.

In comparing the weather of September and August, September exhibits cooler temperatures, with a minimum of 0°C (32°F) and an average of 13°C (55°F), while August maintains milder conditions, starting at a minimum of 6°C (43°F) and averaging 17°C (62°F). The maximum temperatures in August reach up to 30°C (87°F), significantly warmer than September's peak of 25°C (78°F). Additionally, September experiences higher precipitation levels, with 158 mm (6.2 in) over 16 days, compared to August's 233 mm (9.2 in) across 19 rainy days. Despite this, both months have relatively high humidity, with September at 83% and August slightly lower at 80%. For more detailed information, you can check Vaduz weather in August.

In September, temperatures range from a minimum of 0°C (32°F) to a maximum of 25°C (78°F), averaging around 13°C (55°F), while October sees a slight drop with minimums dipping to -2°C (28°F) and an overall average of 9°C (48°F). Precipitation decreases marginally from 158 mm (6.2 in) in September to 141 mm (5.6 in) in October, with September experiencing rain on 16 days compared to 14 rainy days in October. The humidity rises from 83% in September to 90% in October, contributing to a cooler, damp atmosphere. For more detailed weather insights, check out Vaduz weather in October.

September and November present distinctly different weather patterns. In September, temperatures range from a minimum of 0°C (32°F) to a pleasant maximum of 25°C (78°F), creating an average of 13°C (55°F). The month is quite rainy, with 158 mm (6.2 in) of precipitation over 16 days and a humidity level of 83%. In contrast, November experiences colder temperatures, with a minimum of -8°C (17°F) and an average of only 4°C (39°F), reaching a maximum of 19°C (66°F). Precipitation decreases to 88 mm (3.5 in) across 11 days, while humidity rises slightly to 88%. For more detailed information on November weather, you can visit Vaduz weather in November.

September and December present contrasting weather experiences. In September, temperatures range from a mild 0°C (32°F) at night to a pleasant 25°C (78°F) during the day, with an average of 13°C (55°F). The month sees significant rainfall, accumulating to 158 mm (6.2 in) over 16 days and a relative humidity of 83%. In stark contrast, December brings colder conditions, with temperatures dipping to a minimum of -17°C (2°F) and averaging around -1°C (31°F), peaking at 12°C (54°F). Although the total precipitation is similar at 156 mm (6.2 in), it occurs over 18 days, and the humidity rises to 90%. For more detailed information, check out Vaduz weather in December.

Compare Vaduz's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Vaduz

As autumn gently descends upon Vaduz in September, the weather begins to showcase a marked transition from the warmth of summer to the chill of winter. Temperatures typically range from mild to cool, with an average chill that invites cozy sweaters while lingering warmth occasionally holds court. With about 16 days of rainfall, this month experiences a noticeable uptick in precipitation, contributing to an average humidity of 83%, which can make the air feel even cooler. This shift in weather is a reminder that as we move deeper into the season, the landscape transforms beautifully. For more insights into Vaduz's climate trends, explore Vaduz Climate.