nomadseason

September Weather in Attalens, Switzerland

Last updated: August 27, 2025

In Attalens, Switzerland, the average temperature in September hovers around 16°C (61°F). Expect a minimum of 6°C (43°F) and a pleasant maximum reaching 27°C (81°F). With an average precipitation of 75 mm (2.9 in) over 11 days, you might want to carry an umbrella! The air is also quite humid, boasting an average of 81% humidity, creating a lush atmosphere for your adventures.

September Temperature in Attalens

In September in Attalens, the average temperature is 16°C (61°F), with maximums reaching 27°C (81°F) and minimums dropping as low as 6°C (43°F). This pleasant range makes it an ideal time for travelers to explore and enjoy outdoor activities in Attalens.

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

The chart illustrates September temperature patterns in Attalens, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Attalens, September typically has an average temperature of 16°C (61°F), with highs reaching up to 27°C (81°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec374043485463676761534539
Data source: Temperature data for Attalens generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Attalens

In Attalens in September, the precipitation amount is 75 mm (2.9 in) over the course of 11 days.

September Precipitation Trends in Attalens

The chart displays monthly precipitation patterns in Attalens, 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 Attalens, September typically receives around 75 mm (2.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec11693111591421031061017510498186
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Attalens

In Attalens in September, humidity is 81%. With an average temperature of 16°C (61°F), this humidity feels like a warm, heavy blanket wrapping around you as you explore the sights, making it essential to stay hydrated and take regular breaks in the shade.

September Average Humidity in Attalens

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

In Attalens 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 Attalens.

Maximum UV Index Levels in Attalens for September

The chart shows the monthly maximum UV Index (UVI) for Attalens 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 Attalens typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2467810997532
Data source: Attalens 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 Attalens Compares to Other Months

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

This table compares monthly weather conditions in Attalens, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)116 mm (4.6 inches)91%low
February Weather4°C (40°F)93 mm (3.7 inches)89%moderate
March Weather6°C (43°F)111 mm (4.4 inches)87%high
April Weather9°C (49°F)59 mm (2.3 inches)84%high
May Weather12°C (55°F)142 mm (5.6 inches)80%very high
June Weather17°C (64°F)103 mm (4.1 inches)82%very high
July Weather19°C (67°F)106 mm (4.2 inches)82%very high
August Weather19°C (67°F)101 mm (4.0 inches)77%very high
September Weather16°C (61°F)75 mm (2.9 inches)81%high
October Weather12°C (53°F)104 mm (4.1 inches)89%moderate
November Weather7°C (45°F)98 mm (3.8 inches)89%moderate
December Weather4°C (39°F)186 mm (7.3 inches)91%low

Compare Attalens's Climate with Cities Worldwide