September Weather in Zug, Switzerland

Last updated: August 27, 2025

September in Zug, Switzerland, offers a delightful blend of mild temperatures and a symphony of autumnal charm. With maximum temperatures soaring to 28°C (83°F) and an average of 16°C (60°F), the month provides ideal conditions for outdoor activities. However, as summer fades, the minimum temperature can dip to a brisk 5°C (41°F), reminding visitors of the approaching fall. Expect 104 mm (4.1 in) of precipitation across 11 days, contributing to the region's lush landscapes, while an humidity level of 83% adds a touch of freshness to the air. Embrace the seasonal transition in Zug, where vibrant colors and crisp breezes create a picturesque setting for both locals and travelers.

September Temperature in Zug

As September rolls into Zug, Switzerland, a noticeable shift in temperatures signifies the onset of autumn. With a minimum of 5°C (41°F) and an average of 16°C (60°F), the days are still warm but hint at the cooler months ahead. The maximum temperature can rise to a pleasant 28°C (83°F), making it one of the last opportunities for outdoor activities before the chill settles in. Compared to the sweltering summer months, September offers a refreshing reprieve with its crisp air and vibrant foliage, inviting both locals and visitors to soak in the scenic beauty of the region. As the month progresses, temperatures gradually decline, signaling the upcoming transition into the cozy embrace of autumn.

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

The chart illustrates September temperature patterns in Zug, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Zug, 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).
JanFebMarAprMayJunJulAugSepOctNovDec353943505665676760524238
Data source: Temperature data for Zug 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 Zug

In September, Zug experiences a moderate level of precipitation, with 104 mm (4.1 in) of rain spread over 11 days. This marks a slight decrease from the substantial rainfall seen in the summer months, particularly August's higher total of 141 mm (5.6 in). As the city transitions into autumn, September's weather offers a refreshing reprieve from the intense summer showers, yet still maintains a notable amount of rain, aligning with the regional trend of increased precipitation during the warmer months. This month not only bridges the gap between the vibrant summer and the crisp fall, but also prepares the landscape for the changing seasons ahead.

September Precipitation Trends in Zug

The chart displays monthly precipitation patterns in Zug, 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 Zug, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec112871007713714913414110512276136
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Zug

In September, Zug, Switzerland experiences a refreshing humidity level of 83%, maintaining a balanced atmosphere as summer transitions into autumn. This marks a slight increase from the preceding month of August, which recorded a humidity of 80%. Throughout the year, humidity levels tend to decline from a high of 92% in January, gradually tapering off to 80% in the warmer months before rising again in the fall and winter months, with October and December peaking at 90%. The overall trend indicates a dynamic fluctuation in humidity, reflecting the region's distinct seasonal shifts, ultimately contributing to Zug's charming climate.

September Average Humidity in Zug

This chart illustrates the average monthly humidity levels in Zug, 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 Zug 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 Zug

As September rolls into Zug, Switzerland, the UV Index settles at a notable 6, marking a return to the high exposure category. With a recommended burn time of 25 minutes, it’s essential to remain cautious, especially after the intense summer months when the UV levels peaked at 9. This slight dip compared to August’s lingering UV Index of 8 signals a transition towards fall, though sun protection remains crucial as sunlight intensity can still pose risks. As the days grow shorter, embracing the sun responsibly will help residents and visitors alike enjoy the beautiful early autumn while staying safe. For detailed UV information, visit Zug UV Index.

Maximum UV Index Levels in Zug for September

The chart shows the monthly maximum UV Index (UVI) for Zug 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 Zug typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986432
Data source: Zug 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 Zug

As summer gracefully transitions into autumn, September in Zug shines brightly with an impressive 320 hours of sunshine. This month reflects a delightful blend of lingering warmth from summer and the gentle onset of fall. While the daylight gradually starts to wane, September still boasts significantly more sunshine than the months to follow, particularly contrasting with the darker days of October and November, which see a drop to 279 and 219 hours respectively. The hours of sunshine in September hint at the enduring charm of the region, setting the stage for a cozy yet bright start to the autumn season.

Monthly Sunshine Duration in Zug: September Highlighted

The September sunshine duration represents the total number of hours Zug 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.
JanFebMarAprMayJunJulAugSepOctNovDec164h228h300h358h370h385h415h384h320h279h219h185h
Data source: Zug September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Zug During September

As September rolls around in Zug, Switzerland, the likelihood of enjoying sunny weather rises to 41%, offering a welcome shift from the earlier summer months. This percentage marks a subtle uptick compared to the summer's relatively stable chances, hovering around the mid-30s. While still lower than the sunshine probabilities of April and March, which boast nearly a 50% chance, September presents a pleasant opportunity for outdoor activities before the cooler months set in. With autumn on the horizon, this transitional month stands out as a favorable time to bask in the last rays of summer, making it an ideal period to embrace the outdoors in this picturesque Swiss town.

Percentage of Sunny Days in September in Zug

The chart illustrates the percentage of sunny days in Zug 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 Zug experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec15%37%45%49%33%32%35%38%41%36%23%30%
Data source: Zug September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Zug in September

As September arrives in Zug, Switzerland, daylight begins its gradual retreat, offering residents about 12 hours of light each day. This month serves as a gentle transition from the long, sun-soaked days of summer—where June, July, and August bask in 15 hours of daylight—to the shorter days that characterize autumn. The trend showcases a steady increase in daylight from the depths of winter, where January offers only 8 hours, to the blossoming light of spring. However, just as nature starts to prepare for the cozy embrace of fall, September’s 12 hours of daylight reflects a perfect balance, allowing for lingering outdoor activities while hinting at the approaching change of seasons.

Average Daylight Hours in Zug for September

The chart illustrates the variation in daylight duration in Zug 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 17m11h 56m13h 37m15h 5m15h 50m15h 26m14h 8m12h 30m10h 49m9h 19m8h 32m
Data source: Zug daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Zug

As September rolls in, Zug, Switzerland experiences a notable shift in its wind patterns. The average wind speed dips to 1.4 m/s (3 mph), marking the season's calmest conditions. This trend follows a summer characterized by slightly breezier days, with wind speeds peaking at 2.1 m/s (5 mph) in May. From the vibrant gusts of spring to the gentle breezes of autumn, the wind in Zug transitions smoothly, inviting residents and visitors alike to savor the serene landscapes. As summer fades, this gentle September wind serves as a reminder of the seasonal change, whispering promises of crisp autumn days ahead.

Average September Wind Speed in Zug

The chart displays monthly wind speed patterns in Zug, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.01.81.81.92.11.51.61.51.4 m/s1.51.61.8
Data source: Zug September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Zug Compares to Other Months

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

September and January exhibit stark contrasts in weather. In September, temperatures range from a cool 5°C (41°F) to a warm 28°C (83°F), with an average of 16°C (60°F). The month experiences about 104 mm (4.1 in) of precipitation over 11 days and maintains a relatively high humidity of 83%. In contrast, January is much colder, with temperatures dipping to a minimum of -11°C (13°F) and peaking at 15°C (59°F), averaging just 1°C (35°F). This winter month sees a slightly higher precipitation of 112 mm (4.4 in) across 12 days, coupled with even greater humidity at 92%. For more details on January weather in Zug, you can visit Zug weather in January.

September and February present contrasting weather conditions. In September, temperatures range from a minimum of 5°C (41°F) to a maximum of 28°C (83°F), creating a warm and pleasant average of 16°C (60°F). However, it also sees substantial rainfall, with 104 mm (4.1 in) spread over 11 days and a humidity level of 83%. In stark contrast, February experiences much colder weather, with temperatures dipping as low as -12°C (10°F) and averaging only 4°C (39°F). While February has slightly less precipitation at 87 mm (3.4 in) over the same 11 days, the humidity is higher at 89%, contributing to the brisk, chilly atmosphere. For more detailed insights, you can check Zug weather in February.

In comparing the weather of September and March, we notice a significant shift in temperature and precipitation patterns. September enjoys a more temperate climate with average temperatures ranging from a minimum of 5°C (41°F) to a maximum of 28°C (83°F), while March experiences colder conditions, with temperatures ranging from a frigid -11°C (13°F) at night to a mild 20°C (69°F) during the day. While both months are similar in terms of precipitation, with September receiving 104 mm (4.1 in) over 11 days and March recording 100 mm (3.9 in) over 16 days, March tends to be wetter due to the frequent rainy days. Additionally, humidity levels are slightly higher in March at 87% compared to September’s 83%. For a deeper look into March weather specifics, you can visit Zug weather in March.

When comparing the weather in September and April, we notice distinct differences in temperature and precipitation patterns. In September, temperatures range from a minimum of 5°C (41°F) to a maximum of 28°C (83°F), with an average of 16°C (60°F). The month typically sees around 104 mm (4.1 in) of precipitation over 11 days, accompanied by a humidity level of 83%. In contrast, April experiences cooler temperatures, ranging from a minimum of -3°C (26°F) to a maximum of 26°C (79°F) and averaging 10°C (50°F). The precipitation in April totals 77 mm (3.0 in) over approximately 10 days, with slightly higher humidity at 84%. For more specific details on Zug's weather in April, you can check Zug weather in April. Overall, September tends to be warmer and wetter compared to the cooler and drier conditions of April.

September typically presents a mild climate, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 28°C (83°F) and an average of 16°C (60°F). The month sees a fair amount of precipitation, totaling 104 mm (4.1 in) over about 11 days, alongside relatively high humidity at 83%. In contrast, May experiences cooler temperatures, with a minimum of -2°C (29°F) and an average of 13°C (56°F), peaking at 30°C (86°F). This month is wetter, receiving 137 mm (5.4 in) of rain over 16 days, while the humidity remains slightly lower at 80%. For more details on May weather, you can check Zug weather in May.

September and June present distinct weather patterns. In September, temperatures range from a minimum of 5°C (41°F) to a maximum of 28°C (83°F), with an average of 16°C (60°F). The month sees 104 mm (4.1 in) of precipitation over 11 days, accompanied by a humidity level of 83%. In contrast, June offers warmer temperatures, with a minimum of 6°C (43°F), an average of 18°C (65°F), and a maximum of 34°C (93°F). However, June is wetter, receiving 149 mm (5.9 in) of precipitation over 16 days, while maintaining a slightly lower humidity of 82%. For a closer look at June's weather, you can visit Zug weather in June.

September weather is characterized by a wider temperature range, with minimums dropping to 5°C (41°F) and maximums reaching 28°C (83°F). In contrast, July typically offers warmer conditions, with minimum temperatures at 10°C (50°F) and highs soaring up to 34°C (94°F). While both months experience high humidity levels of 83%, July sees more precipitation (134 mm or 5.3 in over 16 days) compared to September's 104 mm (4.1 in over 11 days). This makes September a bit drier and cooler than the hot and often stormy days of July. For more details on July weather, you can visit Zug weather in July.

In comparing the weather between August and September, we see a notable decline in temperatures as September brings a cooler climate, with minimums dropping to 5°C (41°F) and an average of 16°C (60°F), compared to August's minimum of 9°C (49°F) and a warmer average of 20°C (67°F). Additionally, September experiences fewer maximum temperatures, peaking at 28°C (83°F) compared to August’s maximum of 34°C (93°F). Precipitation also varies, as September sees about 104 mm (4.1 in) over 11 days, while August has higher rainfall totals of 141 mm (5.6 in) over 14 days. Humidity levels remain relatively high in both months, with September at 83% and August at 80%. For more details, visit Zug weather in August.

September typically showcases a warmer climate with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 28°C (83°F), averaging around 16°C (60°F). Its precipitation, totaling 104 mm (4.1 in) over 11 days, contributes to a humidity level of 83%. In contrast, October brings cooler weather with temperatures dipping, featuring a minimum of 2°C (35°F) and a maximum of 23°C (73°F), leading to an average of 11°C (52°F). The month is slightly wetter, with 122 mm (4.8 in) of rainfall spread over 13 days, resulting in increased humidity at 90%. For more details on what to expect, check out this link: Zug weather in October.

September tends to be warmer than November, featuring a minimum temperature of 5°C (41°F) and an average of 16°C (60°F), while November sees temperatures drop to a minimum of -1°C (30°F) and an average of 6°C (43°F). Although September is generally sunnier with a maximum temperature reaching up to 28°C (83°F), it also experiences higher precipitation levels, averaging 104 mm (4.1 in) over about 11 days. In contrast, November has a lower total precipitation of 76 mm (3.0 in) but slightly more rainy days at 12, coupled with higher humidity at 88%. For a more detailed look at November weather, you can check Zug weather in November.

In September, temperatures range from a mild 5°C (41°F) at night to a warm 28°C (83°F) during the day, making it a comfortable month with an average temperature of 16°C (60°F). The month sees about 104 mm (4.1 in) of precipitation over approximately 11 days, with a humidity level hovering around 83%. In contrast, December experiences cooler conditions, with nighttime lows dropping to -5°C (23°F) and daytime highs reaching only 14°C (57°F), resulting in an average temperature of just 3°C (38°F). This month is wetter, with 136 mm (5.4 in) of precipitation spread across 19 days, and humidity levels rising to 90%. For more detailed information, check out Zug weather in December.

Compare Zug's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Zug

As September unfolds in Zug, the weather offers a delightful transition from summer to autumn, marked by a gentle drop in temperatures and an increase in moisture. While you can still expect pleasantly warm days that peak around 28°C (83°F), the cozy evenings and crisp mornings bring a refreshing coolness, with lows dipping to around 5°C (41°F). This month typically experiences an average humidity of 83%, intensifying the feeling of freshness after the warmer summer months. Rainy days are more frequent, with about 11 days contributing to a total precipitation of 104 mm (4.1 in). For those curious about how September's climate compares to other times of the year, more detailed insights can be found at Zug Climate.