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September Weather in Filisur, Switzerland

Last updated: August 27, 2025

In September, the average temperature in Filisur, Switzerland hovers around 7°C (46°F). Visitors can expect a range of temperatures, with a chilling minimum of -11°C (13°F) and a warm maximum reaching 20°C (68°F). During this month, precipitation averages 134 mm (5.3 in) spread over 16 days, contributing to a high humidity level of 83%.

September Temperature in Filisur

In September in Filisur, the average temperature is 7°C (46°F). The maximum can reach 20°C (68°F), while the minimum can drop as low as -11°C (13°F). It's essential to be prepared for a wide range of temperatures when traveling during this month.

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

The chart illustrates September temperature patterns in Filisur, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Filisur, September typically has an average temperature of 7°C (46°F), with highs reaching up to 20°C (68°F) and lows dropping to around -11°C (13°F).
JanFebMarAprMayJunJulAugSepOctNovDec162227344151535245382719
Data source: Temperature data for Filisur 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 Filisur

In Filisur in September, the total precipitation amount is 134 mm (5.3 in), distributed over 16 days.

September Precipitation Trends in Filisur

The chart displays monthly precipitation patterns in Filisur, 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 Filisur, September typically receives around 134 mm (5.3 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec92659287161147152197134133103129
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Filisur

In Filisur in September humidity is 83%. With average temperature 7°C (46°F), this humidity feels like a damp chill that seeps into your clothes, making every outdoor excursion feel heavier and less invigorating, requiring a thicker jacket and a more cautious step as you navigate the slightly slippery terrain.

September Average Humidity in Filisur

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

In Filisur 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 Filisur.

Maximum UV Index Levels in Filisur for September

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

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

This table compares monthly weather conditions in Filisur, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (16°F)92 mm (3.6 inches)92%low
February Weather-6°C (22°F)65 mm (2.6 inches)89%moderate
March Weather-3°C (27°F)92 mm (3.6 inches)87%high
April Weather1°C (34°F)87 mm (3.4 inches)84%very high
May Weather5°C (41°F)161 mm (6.3 inches)80%very high
June Weather10°C (51°F)147 mm (5.8 inches)82%very high
July Weather11°C (53°F)152 mm (6.0 inches)83%very high
August Weather11°C (52°F)197 mm (7.8 inches)80%very high
September Weather7°C (46°F)134 mm (5.3 inches)83%high
October Weather3°C (39°F)133 mm (5.3 inches)90%moderate
November Weather-3°C (27°F)103 mm (4.0 inches)88%moderate
December Weather-7°C (19°F)129 mm (5.1 inches)90%low

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