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September Weather in Alberswil, Switzerland

Last updated: August 27, 2025

In Alberswil, Switzerland, the average temperature in September hovers around 15°C (59°F), with a minimum of 2°C (36°F) and a maximum peak of 28°C (82°F). Expect 91 mm (3.6 in) of precipitation spread over about 12 days, contributing to an average humidity of 83%. Prepare for a month of variable weather as you explore this vibrant locale!

September Temperature in Alberswil

In September in Alberswil, the average temperature is 15°C (59°F). Maximums can reach 28°C (82°F), and minimums can drop as low as 2°C (36°F). Pack accordingly for a comfortable trip, as temperatures can vary widely throughout the day.

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

The chart illustrates September temperature patterns in Alberswil, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alberswil, September typically has an average temperature of 15°C (59°F), with highs reaching up to 28°C (82°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec343843495565676659504036
Data source: Temperature data for Alberswil 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 Alberswil

In Alberswil in September, the precipitation amount is 91 mm (3.6 in) over a period of 12 days.

September Precipitation Trends in Alberswil

The chart displays monthly precipitation patterns in Alberswil, 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 Alberswil, September typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec9985100731501421651589110972133
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Alberswil

In Alberswil in September humidity is 83%. With an average temperature of 15°C (59°F), this humidity feels like a cozy, damp embrace that can be quite stifling for traveling, making even short walks feel more exhausting than they should, and prompting a need for frequent breaks in shaded or air-conditioned areas.

September Average Humidity in Alberswil

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

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

Maximum UV Index Levels in Alberswil for September

The chart shows the monthly maximum UV Index (UVI) for Alberswil 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 Alberswil typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986422
Data source: Alberswil 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 Alberswil Compares to Other Months

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

This table compares monthly weather conditions in Alberswil, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)99 mm (3.9 inches)92%low
February Weather3°C (38°F)85 mm (3.3 inches)89%moderate
March Weather6°C (43°F)100 mm (4.0 inches)87%moderate
April Weather10°C (50°F)73 mm (2.9 inches)84%high
May Weather13°C (56°F)150 mm (5.9 inches)80%very high
June Weather18°C (65°F)142 mm (5.6 inches)82%very high
July Weather19°C (67°F)165 mm (6.5 inches)83%very high
August Weather19°C (66°F)158 mm (6.2 inches)80%very high
September Weather15°C (59°F)91 mm (3.6 inches)83%high
October Weather10°C (51°F)109 mm (4.3 inches)90%moderate
November Weather5°C (41°F)72 mm (2.8 inches)88%low
December Weather2°C (37°F)133 mm (5.2 inches)90%low

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