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September Weather in Silenen, Switzerland

Last updated: August 27, 2025

In September, the average temperature in Silenen, Switzerland hovers around 8°C (46°F). You can expect a chill with minimums plummeting to -10°C (14°F), while highs can reach up to 20°C (69°F). Rainfall is fairly frequent, with a total precipitation of 164 mm (6.5 in) spread over 15 days. Additionally, the average humidity is notably high at 83%, making for a damp atmosphere.

September Temperature in Silenen

In September in Silenen, the average temperature is 8°C (46°F), with maximums potentially reaching 20°C (69°F) and minimums dipping down to -10°C (14°F). Travelers should be prepared for a wide range of temperatures and pack accordingly to ensure comfort during their visit.

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

The chart illustrates September temperature patterns in Silenen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Silenen, September typically has an average temperature of 8°C (46°F), with highs reaching up to 20°C (69°F) and lows dropping to around -10°C (14°F).
JanFebMarAprMayJunJulAugSepOctNovDec172226334051535246382720
Data source: Temperature data for Silenen 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 Silenen

In Silenen in September, the total precipitation amount is 164 mm (6.5 in) spread over the course of 15 days.

September Precipitation Trends in Silenen

The chart displays monthly precipitation patterns in Silenen, 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 Silenen, September typically receives around 164 mm (6.5 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec13692126104154193207269164179117178
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Silenen

In Silenen in September, humidity is 83%. With an average temperature of 8°C (46°F), this humidity feels like a damp chill that seeps into your bones, making even short outings feel quite uncomfortable and prompting travelers to bundle up and seek shelter more frequently.

September Average Humidity in Silenen

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

In Silenen in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Silenen.

Maximum UV Index Levels in Silenen for September

The chart shows the monthly maximum UV Index (UVI) for Silenen 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 Silenen typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24789101097532
Data source: Silenen 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 Silenen Compares to Other Months

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

This table compares monthly weather conditions in Silenen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (17°F)136 mm (5.4 inches)92%low
February Weather-6°C (22°F)92 mm (3.6 inches)89%moderate
March Weather-3°C (27°F)126 mm (5.0 inches)87%high
April Weather0°C (33°F)104 mm (4.1 inches)84%very high
May Weather4°C (40°F)154 mm (6.1 inches)80%very high
June Weather10°C (51°F)192 mm (7.6 inches)82%very high
July Weather12°C (53°F)207 mm (8.1 inches)83%very high
August Weather11°C (53°F)269 mm (10.6 inches)80%very high
September Weather8°C (46°F)164 mm (6.5 inches)83%high
October Weather3°C (38°F)179 mm (7.0 inches)90%moderate
November Weather-3°C (27°F)117 mm (4.6 inches)88%moderate
December Weather-7°C (20°F)178 mm (7.0 inches)90%low

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