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September Weather in Killwangen, Switzerland

Last updated: August 27, 2025

In September, the average temperature in Killwangen, Switzerland hovers around 15°C (60°F), with a minimum low of 2°C (35°F) and a balmy maximum of 29°C (84°F). Expect a total precipitation of 82 mm (3.2 in) spread over approximately 12 days, resulting in an average humidity level of 83%. This mix of elements makes for a dynamic climate that influences both daily life and local activities.

September Temperature in Killwangen

In September in Killwangen, the average temperature is 15°C (60°F), with maximums reaching 29°C (84°F) and minimums dropping as low as 2°C (35°F). It's an ideal time for travelers to enjoy a pleasant climate while exploring the outdoors.

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

The chart illustrates September temperature patterns in Killwangen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Killwangen, September typically has an average temperature of 15°C (60°F), with highs reaching up to 29°C (84°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec343843505665676759514137
Data source: Temperature data for Killwangen 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 Killwangen

In Killwangen in September, the precipitation amount is 82 mm (3.2 in) occurring over a span of 12 days.

September Precipitation Trends in Killwangen

The chart displays monthly precipitation patterns in Killwangen, 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 Killwangen, September typically receives around 82 mm (3.2 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec91768860132133128141829268125
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Killwangen

In Killwangen in September humidity is 83%. With an average temperature of 15°C (60°F), this humidity feels like a damp blanket wrapping around you, making travel a bit uncomfortable and sticky, as the air clings to your skin and dampens your clothes.

September Average Humidity in Killwangen

This chart illustrates the average monthly humidity levels in Killwangen, 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 Killwangen is approximately 83%, 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 Killwangen

In Killwangen in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Killwangen, you can refer to this Hourly UV Index in Killwangen.

Maximum UV Index Levels in Killwangen for September

The chart shows the monthly maximum UV Index (UVI) for Killwangen 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 Killwangen typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Killwangen 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.

How September Weather in Killwangen Compares to Other Months

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

This table compares monthly weather conditions in Killwangen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)91 mm (3.6 inches)92%low
February Weather3°C (39°F)76 mm (3.0 inches)89%moderate
March Weather6°C (43°F)88 mm (3.5 inches)87%moderate
April Weather10°C (50°F)60 mm (2.4 inches)84%high
May Weather13°C (56°F)132 mm (5.2 inches)80%very high
June Weather19°C (66°F)133 mm (5.2 inches)82%very high
July Weather20°C (68°F)128 mm (5.1 inches)83%very high
August Weather19°C (67°F)141 mm (5.5 inches)80%very high
September Weather15°C (60°F)82 mm (3.2 inches)83%high
October Weather10°C (51°F)92 mm (3.6 inches)90%moderate
November Weather5°C (41°F)67 mm (2.7 inches)88%low
December Weather3°C (37°F)125 mm (4.9 inches)90%low

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