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September Weather in Aesch, Switzerland

Last updated: August 27, 2025

In Aesch, Switzerland, the average temperature in September is a comfortable 15°C (60°F). However, temperatures can vary widely, with a minimum of 4°C (39°F) and a maximum of 28°C (82°F). Expect some damp days, as precipitation averages 106 mm (4.2 in) over 13 days, contributing to an average humidity of 83%.

September Temperature in Aesch

In September in Aesch, the average temperature is 15°C (60°F), with maximums reaching 28°C (82°F) and minimums dropping as low as 4°C (39°F). Pack layers to comfortably enjoy the pleasant days and cooler evenings during your travels.

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

The chart illustrates September temperature patterns in Aesch, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Aesch, September typically has an average temperature of 15°C (60°F), with highs reaching up to 28°C (82°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec353943505665676760524237
Data source: Temperature data for Aesch 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 Aesch

In Aesch in September, the precipitation amount is 106 mm (4.2 in) spread over a duration of 13 days.

September Precipitation Trends in Aesch

The chart displays monthly precipitation patterns in Aesch, 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 Aesch, September typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec107881027714615416416210712278137
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Aesch

In Aesch 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 Aesch

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

In Aesch 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 Aesch, you can refer to this Hourly UV Index in Aesch.

Maximum UV Index Levels in Aesch for September

The chart shows the monthly maximum UV Index (UVI) for Aesch 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 Aesch typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986432
Data source: Aesch 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 Aesch Compares to Other Months

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

This table compares monthly weather conditions in Aesch, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)107 mm (4.2 inches)92%low
February Weather4°C (39°F)87 mm (3.4 inches)89%moderate
March Weather6°C (43°F)102 mm (4.0 inches)87%moderate
April Weather10°C (50°F)77 mm (3.0 inches)84%high
May Weather13°C (56°F)146 mm (5.8 inches)80%very high
June Weather18°C (65°F)154 mm (6.0 inches)82%very high
July Weather20°C (67°F)164 mm (6.4 inches)83%very high
August Weather19°C (67°F)162 mm (6.4 inches)80%very high
September Weather15°C (60°F)106 mm (4.2 inches)83%high
October Weather11°C (52°F)122 mm (4.8 inches)90%moderate
November Weather5°C (42°F)78 mm (3.1 inches)88%moderate
December Weather3°C (38°F)137 mm (5.4 inches)90%low

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