September Weather in Baden, Switzerland

Last updated: August 27, 2025

In Baden, Switzerland, September presents a delightful mix of late-summer warmth and the onset of autumn. With a maximum temperature reaching 29°C (84°F), residents and visitors can still enjoy outdoor activities while the average temperature hovers around a comfortable 15°C (60°F). As the month unfolds, the weather shifts, with a minimum temperature dipping to 2°C (35°F), signifying the cool nights ahead. However, attendees should be prepared for occasional rain, as ** precipitation amounts to 82 mm (3.2 in)** over 12 days, accompanied by a notable humidity level of 83%. This combination creates a refreshing yet variable climate, perfect for exploring the stunning landscapes of Baden during this enchanting transitional month.

September Temperature in Baden

In September, Baden, Switzerland, transitions from the warmth of summer to the crispness of fall, showcasing a temperature range that reflects this seasonal shift. With a minimum of 2°C (35°F) and a pleasant average of 15°C (60°F), the days can still reach a cozy maximum of 29°C (84°F), inviting locals and visitors alike to enjoy outdoor activities. As the month progresses, the weather starts to cool, mirroring the decreasing daylight hours, while still offering glorious sunny days. This month serves as a delightful bridge between the heat of summer and the chill of autumn, making it an ideal time to explore Baden's beautiful landscapes and cultural sites.

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

The chart illustrates September temperature patterns in Baden, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Baden, 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).
JanFebMarAprMayJunJulAugSepOctNovDec343843505665676759514137
Data source: Temperature data for Baden 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 Baden

September in Baden, Switzerland, sees a shift in weather as summer gives way to autumn, bringing 82 mm (3.2 in) of precipitation over an average of 12 rainy days. This marks a noticeable decrease compared to the wettest months of the summer, such as August's 141 mm (5.5 in). As temperatures begin to cool, the rainfall becomes less intense, easing off from the wetter patterns observed in the preceding months while still maintaining a steady flow of moisture. This transitional month lays the groundwork for the autumn season, highlighting a balance between lingering warmth and the fresh, crisp air that precedes the winter months ahead.

September Precipitation Trends in Baden

The chart displays monthly precipitation patterns in Baden, 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 Baden, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec91768860132133128141829268125
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Baden

September in Baden, Switzerland, finds itself nestled between the warmth of summer and the crispness of autumn, reflected in its 83% humidity. This figure marks a slight uptick from August's 80%, showcasing a trend towards increased moisture as the seasons transition. As the year progresses, humidity levels typically begin to rise again in October, peaking at 90%, reminiscent of the cold, damp winters that lie ahead. The September humidity captures the essence of early fall, where the fading warmth meets the lingering remnants of summer’s moisture, creating a refreshing atmosphere that bridges the seasonal divide.

September Average Humidity in Baden

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

As summer transitions to fall in Baden, Switzerland, September brings a noticeable shift in the UV Index. With a UV Index of 6, categorized as high, residents and visitors need to be aware, as the recommended burn time increases to 25 minutes. This decrease from the blistering highs of August (UV Index 8) and the peak summer months, signals a gradual easing, yet it remains essential to take precautions against sun exposure. The trend shows that while the UV Index typically begins to drop in autumn, September still requires vigilance to protect skin health. For more detailed insights, visit Baden UV Index.

Maximum UV Index Levels in Baden for September

The chart shows the monthly maximum UV Index (UVI) for Baden 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 Baden typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Baden 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 Baden

As summer gracefully transitions into autumn, September in Baden, Switzerland, offers a delightful balance of sunshine, boasting 321 hours of bright, invigorating light. This month continues the trend of increasing daylight hours that begins in the chill of January, peaking in the warmth of July with an impressive 413 hours. Though September shows a notable decline from July and August’s peak sunny days, it still maintains a remarkable glow compared to the earlier months of the year. The steady decrease leading into October, which averages 269 hours, signals the impending embrace of shorter days, but September’s enduring sunshine invites residents and visitors alike to bask in the lingering warmth of summer before autumn sets in.

Monthly Sunshine Duration in Baden: September Highlighted

The September sunshine duration represents the total number of hours Baden 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.
JanFebMarAprMayJunJulAugSepOctNovDec145h215h287h356h363h383h413h380h321h269h198h165h
Data source: Baden September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Baden During September

In Baden, Switzerland, September marks a notable transition in the weather, with a 43% chance of sunny days—the second highest probability for sunshine after March. As summer wanes, the likelihood of clear skies dips slightly from the higher percentages seen in the warmer months, but remains comfortably above many autumn months like October and November. This trend suggests that while September may usher in the change of seasons, it still offers a decent opportunity for outdoor activities and enjoying the fading warmth of summer. Embrace the sunny days of September before the chill of autumn sets in!

Percentage of Sunny Days in September in Baden

The chart illustrates the percentage of sunny days in Baden 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 Baden experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec16%38%47%49%33%31%35%39%43%36%22%22%
Data source: Baden September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Baden in September

As summer wanes, September in Baden, Switzerland, offers a gentle transition with an average of 12 hours of daylight. This month marks a noticeable shift from the peak brightness of summer, which enjoys up to 15 hours daily in June, July, and August. The gradual decrease in daylight begins in August and continues into the fall months, signaling the approach of shorter days ahead. Interestingly, the daylight duration in September still provides ample opportunity for outdoor activities, making it a pleasant month before the crispness of autumn settles in. As we move into October, the daylight dips to 10 hours, marking a further shift into the cozy embrace of the cooler seasons.

Average Daylight Hours in Baden for September

The chart illustrates the variation in daylight duration in Baden throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 54m10h 14m11h 56m13h 39m15h 8m15h 54m15h 30m14h 10m12h 31m10h 48m9h 16m8h 28m
Data source: Baden daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Baden

As summer fades into autumn in Baden, Switzerland, September greets us with a gentle whisper of wind, averaging just 1.7 m/s (4 mph). This slight breeze marks a notable decrease from the warmer months, where wind speeds peaked in May at 2.8 m/s (6 mph). As the year progresses, we observe a trend of fluctuating wind speeds, with autumn months often presenting softer currents—October follows closely with a marginal rise to 1.8 m/s. Overall, the transition from the vibrant gusts of early spring to the calmer, more serene atmosphere of late summer and early autumn reflects the changing seasons and invites a contemplative ease to the scenic beauty of Baden.

Average September Wind Speed in Baden

The chart displays monthly wind speed patterns in Baden, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.62.22.32.42.81.71.91.91.7 m/s1.82.12.4
Data source: Baden September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Baden Compares to Other Months

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

September and January present quite contrasting weather patterns. In September, temperatures range from a mild 2°C (35°F) at night to a warm 29°C (84°F) during the day, averaging around 15°C (60°F). The month experiences an average of 12 days of precipitation totaling 82 mm (3.2 in), with a humidity level of 83%.

In stark contrast, January is much colder, with temperatures dipping to a minimum of -15°C (6°F) and averaging just 1°C (34°F), peaking at 16°C (61°F). During this month, there are similar precipitation levels of 91 mm (3.6 in) over 11 days, but the humidity rises slightly to 92%. For more detailed information on January's weather, check out Baden weather in January.

September and February display distinct differences in weather patterns. In September, temperatures range from a mild minimum of 2°C (35°F) to a warm maximum of 29°C (84°F), averaging around 15°C (60°F), with 82 mm (3.2 in) of precipitation over about 12 days and an average humidity of 83%. In contrast, February is much colder, with temperatures dipping as low as -10°C (14°F) and peaking at a maximum of 18°C (65°F), yielding an average temperature of 3°C (39°F). Precipitation is slightly lower at 76 mm (3.0 in) over approximately 11 days, and humidity rises to 89%. For more details on February weather, you can check Baden weather in February.

September and March present contrasting weather patterns, reflecting the transition between summer and spring. In September, temperatures range from a mild 2°C (35°F) to a warm maximum of 29°C (84°F), with an average of 15°C (60°F), while March experiences colder conditions with temperatures ranging from a frigid -12°C (11°F) to a more moderate max of 21°C (70°F), averaging at 6°C (43°F). While both months see considerable precipitation—82 mm (3.2 in) in September and 88 mm (3.5 in) in March—March tends to have slightly higher humidity at 87% compared to September’s 83%. For more detailed information on March weather, visit Baden weather in March.

September typically features milder temperatures compared to April, with an average of 15°C (60°F) compared to April's 10°C (50°F). Even though September can reach a maximum of 29°C (84°F), it also experiences more significant rainfall, with 82 mm (3.2 in) over about 12 days, while April sees 60 mm (2.4 in) over approximately 10 days. Both months have similar humidity levels, hovering around 83% in September and 84% in April. For more detailed insights, you can check the Baden weather in April.

When comparing the weather in September and May, we see notable differences in temperature and precipitation patterns. September typically enjoys milder conditions with temperatures ranging from a minimum of 2°C (35°F) to a maximum of 29°C (84°F), while May experiences cooler temperatures, with a minimum of -1°C (31°F) and a maximum of 30°C (86°F). May is slightly wetter, receiving 132 mm (5.2 in) of precipitation over 16 days compared to September's 82 mm (3.2 in) over 12 days. Both months boast high humidity levels, with September at 83% and May at 80%. For more information, visit Baden weather in May.

September and June present quite different weather experiences. In September, temperatures range from a chilly 2°C (35°F) at night to a warm 29°C (84°F) during the day, with an average temperature of around 15°C (60°F). The month sees 82 mm (3.2 in) of precipitation over 12 days, coupled with relatively high humidity at 83%. In contrast, June offers milder conditions with minimum temperatures of 6°C (44°F) and maximums reaching 34°C (94°F), averaging 19°C (66°F). It also experiences higher precipitation, totaling 133 mm (5.2 in) over 16 days, with slightly lower humidity at 82%. For more details, you can check out Baden weather in June.

In comparing September and July, we find notable differences in temperature and precipitation. September experiences a broader temperature range, with a minimum of 2°C (35°F) and a maximum of 29°C (84°F), while July maintains warmer averages, typically ranging from a minimum of 8°C (47°F) to a maximum of 35°C (95°F). On the precipitation front, July tends to be wetter, receiving about 128 mm (5.1 in) of rainfall over 16 days compared to September's 82 mm (3.2 in) across 12 days. Both months share similar humidity levels at 83%, but the increased warmth and higher rainfall in July contribute to its distinctly different climate. For a detailed look into July weather, check Baden weather in July.

In comparing the weather of September to that of August, we notice several key differences. September experiences a broader temperature range with a minimum of 2°C (35°F) and a maximum of 29°C (84°F), resulting in a lower average temperature of 15°C (60°F) compared to August's warmer average of 19°C (67°F), where temperatures ranged from a minimum of 7°C (45°F) to a maximum of 34°C (94°F). Additionally, September sees a decrease in precipitation, totaling 82 mm (3.2 in) over 12 days, while August is wetter, accumulating 141 mm (5.5 in) over 15 days. Humidity is slightly higher in September at 83%, compared to 80% in August. For more details on August weather, you can check Baden weather in August.

In September, temperatures in Baden range from a pleasant minimum of 2°C (35°F) to a warm maximum of 29°C (84°F), with an average of 15°C (60°F). The month experiences about 82 mm (3.2 in) of precipitation over 12 days and has a humidity level of 83%. In contrast, October sees a notable drop in temperature, with a minimum of -1°C (31°F) and an average of 10°C (51°F), peaking at just 23°C (73°F). Precipitation increases slightly to 92 mm (3.6 in) over 13 days, and humidity rises to 90%, making the air feel even cooler and more damp. For more details on October weather, you can visit Baden weather in October.

In September, the weather tends to be warmer and more variable, with temperatures ranging from a cool 2°C (35°F) to a warm peak of 29°C (84°F) on average. The month receives around 82 mm (3.2 in) of precipitation over 12 days, accompanied by relatively high humidity levels of 83%. In contrast, November brings a noticeable chill, with temperatures dropping to a minimum of -4°C (26°F) and averaging only 5°C (41°F), although it can still reach up to 20°C (68°F) on warmer days. Precipitation decreases slightly to 67 mm (2.7 in) over the same number of days, yet humidity remains high at 88%. For more detailed information about November weather, visit Baden weather in November.

September and December showcase distinct contrasts in weather patterns. In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 29°C (84°F), with an average of 15°C (60°F). The month experiences moderate precipitation of 82 mm (3.2 in) over about 12 days, accompanied by a humidity level of 83%. In contrast, December brings a notable chill, with temperatures dipping to a minimum of -6°C (21°F) and peaking at 14°C (57°F), averaging around 3°C (37°F). This month sees increased precipitation, totaling 125 mm (4.9 in) spread over 18 days, coupled with higher humidity at 90%. For further details on weather conditions in December, you can refer to Baden weather in December.

Compare Baden's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Baden

As summer transitions to fall, September in Baden offers a unique blend of weather, differentiating it from the hotter months that precede it. With maximum temperatures reaching around 29°C (84°F), the days still feel warm, but evenings cool down significantly, making the average temperature hover at a comfortable 15°C (60°F). Additionally, autumn's approach brings increased humidity and more frequent rainfall, with 82 mm (3.2 in) of precipitation across 12 days. This month marks a shift towards the cooler, crisper air of fall, providing a refreshing contrast to the summer's heat. For those interested in exploring more about the region's climate patterns, visit Baden Climate for detailed insights.