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September Weather in Herzogenbuchsee, Switzerland

Last updated: August 27, 2025

In Herzogenbuchsee, Switzerland, the average temperature in September hovers around 15°C (59°F). You can expect the minimum temperature to dip to a chilly 2°C (36°F), while the maximum can reach a warm 29°C (84°F). During this month, precipitation typically totals 79 mm (3.1 in) over 13 days, contributing to an average humidity of 83%.

September Temperature in Herzogenbuchsee

In September in Herzogenbuchsee, the average temperature is 15°C (59°F), with maximums reaching 29°C (84°F) and minimums dropping as low as 2°C (36°F). This variability in temperature makes it essential for travelers to pack layers to comfortably enjoy their stay.

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

The chart illustrates September temperature patterns in Herzogenbuchsee, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Herzogenbuchsee, September typically has an average temperature of 15°C (59°F), with highs reaching up to 29°C (84°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec343843505665676659504036
Data source: Temperature data for Herzogenbuchsee 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 Herzogenbuchsee

In Herzogenbuchsee in September, the precipitation amount is 79 mm (3.1 in) over a span of 13 days.

September Precipitation Trends in Herzogenbuchsee

The chart displays monthly precipitation patterns in Herzogenbuchsee, 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 Herzogenbuchsee, September typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec92779466142129145144799973125
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Herzogenbuchsee

In Herzogenbuchsee in September humidity is 83%. With an average temperature of 15°C (59°F), this humidity feels like a cozy, damp embrace that can be quite stifling for traveling, making even short walks feel more exhausting than they should, and prompting a need for frequent breaks in shaded or air-conditioned areas.

September Average Humidity in Herzogenbuchsee

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

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

Maximum UV Index Levels in Herzogenbuchsee for September

The chart shows the monthly maximum UV Index (UVI) for Herzogenbuchsee 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 Herzogenbuchsee typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986422
Data source: Herzogenbuchsee 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 Herzogenbuchsee Compares to Other Months

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

This table compares monthly weather conditions in Herzogenbuchsee, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)92 mm (3.6 inches)92%low
February Weather3°C (38°F)77 mm (3.0 inches)89%moderate
March Weather6°C (43°F)94 mm (3.7 inches)87%moderate
April Weather10°C (50°F)66 mm (2.6 inches)84%high
May Weather13°C (56°F)142 mm (5.6 inches)80%very high
June Weather18°C (65°F)128 mm (5.1 inches)82%very high
July Weather19°C (67°F)145 mm (5.7 inches)83%very high
August Weather19°C (67°F)144 mm (5.7 inches)80%very high
September Weather15°C (59°F)79 mm (3.1 inches)83%high
October Weather10°C (51°F)99 mm (3.9 inches)90%moderate
November Weather5°C (40°F)73 mm (2.9 inches)88%low
December Weather2°C (37°F)125 mm (4.9 inches)90%low

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