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September Weather in Mollis, Switzerland

Last updated: August 27, 2025

In September, the average temperature in Mollis, Switzerland is a mild 10°C (51°F). However, temperatures can vary widely, with a minimum of -4°C (26°F) and a maximum of 23°C (73°F). Visitors should also prepare for a fair amount of rain, as 191 mm (7.5 in) of precipitation is expected over 18 days. With an average humidity of 83%, the air will feel quite moist, so dress accordingly!

September Temperature in Mollis

In September in Mollis, the average temperature is 10°C (51°F). Maximums can reach 23°C (73°F), while minimums can drop as low as -4°C (26°F). This variation makes it important for travelers to pack accordingly and be prepared for both warm and chilly conditions.

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

The chart illustrates September temperature patterns in Mollis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mollis, September typically has an average temperature of 10°C (51°F), with highs reaching up to 23°C (73°F) and lows dropping to around -4°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec242832394656575751433426
Data source: Temperature data for Mollis 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 Mollis

In Mollis in September, the total precipitation amount is 191 mm (7.5 in), occurring over a span of 18 days.

September Precipitation Trends in Mollis

The chart displays monthly precipitation patterns in Mollis, 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 Mollis, September typically receives around 191 mm (7.5 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec165112148124209239264289191168104198
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mollis

In Mollis in September, humidity is 83%. With an average temperature of 10°C (51°F), this humidity feels like a chilly dampness that permeates your clothes, making it essential to dress in layers for travel, as the cool air combined with the high humidity can create an uncomfortable and bone-chilling atmosphere.

September Average Humidity in Mollis

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

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

Maximum UV Index Levels in Mollis for September

The chart shows the monthly maximum UV Index (UVI) for Mollis 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 Mollis typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2357810986432
Data source: Mollis 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 Mollis Compares to Other Months

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

This table compares monthly weather conditions in Mollis, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)165 mm (6.5 inches)92%low
February Weather-2°C (28°F)112 mm (4.4 inches)89%moderate
March Weather0°C (33°F)148 mm (5.8 inches)87%moderate
April Weather4°C (40°F)124 mm (4.9 inches)84%high
May Weather8°C (46°F)209 mm (8.2 inches)80%very high
June Weather13°C (56°F)239 mm (9.4 inches)82%very high
July Weather14°C (58°F)264 mm (10.4 inches)83%very high
August Weather14°C (57°F)289 mm (11.4 inches)80%very high
September Weather10°C (51°F)191 mm (7.5 inches)83%high
October Weather6°C (44°F)168 mm (6.6 inches)90%moderate
November Weather1°C (34°F)104 mm (4.1 inches)88%moderate
December Weather-3°C (27°F)198 mm (7.8 inches)90%low

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