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September Weather in Vetroz, Switzerland

Last updated: August 27, 2025

In September, the average temperature in Vetroz, Switzerland hovers around 10°C (50°F), making it a mild time of year. However, be prepared for a range of temperatures, with the minimum dropping to -6°C (22°F) and the maximum reaching up to 23°C (73°F). This month also sees an average precipitation of 113 mm (4.5 in) spread over 15 days, contributing to an average humidity level of 81%. Stay cozy and enjoy the seasonal charm!

September Temperature in Vetroz

In September in Vetroz, the average temperature is 10°C (50°F), with maximums reaching up to 23°C (73°F) and minimums dropping as low as -6°C (22°F). This variation in temperature makes it essential to pack layers for your trip.

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

The chart illustrates September temperature patterns in Vetroz, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vetroz, September typically has an average temperature of 10°C (50°F), with highs reaching up to 23°C (73°F) and lows dropping to around -6°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec182631394555575750423121
Data source: Temperature data for Vetroz 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 Vetroz

In Vetroz in September, the precipitation amount is 113 mm (4.5 in) over the course of 15 days.

September Precipitation Trends in Vetroz

The chart displays monthly precipitation patterns in Vetroz, 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 Vetroz, September typically receives around 113 mm (4.5 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec14010813587191177182173113131101214
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Vetroz

In Vetroz in September humidity is 81%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that can make outdoor activities uncomfortable and might leave travelers feeling heavy and lethargic as the moisture clings to their skin.

September Average Humidity in Vetroz

This chart illustrates the average monthly humidity levels in Vetroz, 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 Vetroz is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%84%80%82%82%77%81%89%89%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Vetroz

In Vetroz 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 Vetroz.

Maximum UV Index Levels in Vetroz for September

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

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

This table compares monthly weather conditions in Vetroz, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (18°F)140 mm (5.5 inches)91%low
February Weather-4°C (26°F)108 mm (4.3 inches)89%moderate
March Weather0°C (31°F)135 mm (5.3 inches)87%high
April Weather4°C (39°F)87 mm (3.4 inches)84%very high
May Weather7°C (45°F)191 mm (7.5 inches)80%very high
June Weather13°C (55°F)177 mm (7.0 inches)82%very high
July Weather14°C (58°F)182 mm (7.2 inches)82%very high
August Weather14°C (57°F)173 mm (6.8 inches)77%very high
September Weather10°C (50°F)113 mm (4.5 inches)81%high
October Weather6°C (43°F)131 mm (5.2 inches)89%moderate
November Weather-1°C (31°F)101 mm (4.0 inches)89%moderate
December Weather-6°C (21°F)213 mm (8.4 inches)91%low

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