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September Weather in Sonnen, Germany

Last updated: August 23, 2025

In September, the average temperature in Sonnen, Germany hovers around 13°C (56°F), with a minimum dipping to 0°C (33°F) and a maximum reaching 28°C (83°F). Expect about 78 mm (3.1 in) of precipitation over 12 days, contributing to an average humidity of 82%.

September Temperature in Sonnen

In September in Sonnen, the average temperature is 13°C (56°F). The maximum can reach 28°C (83°F), while the minimum can drop as low as 0°C (33°F). This variability makes it essential for travelers to pack layers for their visit.

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

The chart illustrates September temperature patterns in Sonnen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sonnen, September typically has an average temperature of 13°C (56°F), with highs reaching up to 28°C (83°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec293337465363646456483832
Data source: Temperature data for Sonnen 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 Sonnen

In Sonnen in September, the precipitation amount is 78 mm (3.1 in), occurring over a span of 12 days.

September Precipitation Trends in Sonnen

The chart displays monthly precipitation patterns in Sonnen, 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 Sonnen, September typically receives around 78 mm (3.1 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec83667747118112104103786952102
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sonnen

In Sonnen in September, humidity is 82%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making it feel much cooler than it is and creating a heavy atmosphere that can be exhausting for travelers.

September Average Humidity in Sonnen

This chart illustrates the average monthly humidity levels in Sonnen, 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 Sonnen is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%82%76%80%80%82%82%87%89%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sonnen

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

Maximum UV Index Levels in Sonnen for September

The chart shows the monthly maximum UV Index (UVI) for Sonnen 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 Sonnen typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Sonnen 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 Sonnen Compares to Other Months

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

This table compares monthly weather conditions in Sonnen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)83 mm (3.3 inches)91%low
February Weather0°C (33°F)66 mm (2.6 inches)89%moderate
March Weather3°C (38°F)77 mm (3.0 inches)87%moderate
April Weather8°C (46°F)47 mm (1.9 inches)82%high
May Weather12°C (53°F)118 mm (4.6 inches)76%very high
June Weather17°C (63°F)112 mm (4.4 inches)80%very high
July Weather18°C (64°F)104 mm (4.1 inches)80%very high
August Weather18°C (64°F)103 mm (4.1 inches)82%very high
September Weather13°C (56°F)78 mm (3.1 inches)82%high
October Weather9°C (48°F)69 mm (2.7 inches)87%moderate
November Weather3°C (38°F)52 mm (2.0 inches)89%low
December Weather0°C (33°F)102 mm (4.0 inches)92%low

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