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September Weather in Sonnberg, Austria

Last updated: August 22, 2025

In Sonnberg, Austria, the average temperature in September hovers around 16°C (62°F), with a minimum dipping to 1°C (34°F) and occasionally peaking at a warm 32°C (90°F). Expect 73 mm (2.9 in) of precipitation over 9 days, contributing to an average humidity of 75%. Perfect for those who enjoy a mix of mild weather and occasional rain!

September Temperature in Sonnberg

In September in Sonnberg, the average temperature is 16°C (62°F). The maximum can reach 32°C (90°F), and the minimum can be as low as 1°C (34°F). It’s advisable to pack layers to comfortably enjoy your travels in this variable climate.

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

The chart illustrates September temperature patterns in Sonnberg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sonnberg, September typically has an average temperature of 16°C (62°F), with highs reaching up to 32°C (90°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec343742515869707161524336
Data source: Temperature data for Sonnberg 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 Sonnberg

In Sonnberg in September, the precipitation amount is 73 mm (2.9 in), occurring over the course of 9 days.

September Precipitation Trends in Sonnberg

The chart displays monthly precipitation patterns in Sonnberg, 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 Sonnberg, September typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec312932368170757073434151
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sonnberg

In Sonnberg in September, humidity is 75%. With an average temperature of 16°C (62°F), this humidity feels like a heavy blanket wrapping around you, making traveling feel a bit stifling and sticky, as the air clings to your skin and can sap your energy.

September Average Humidity in Sonnberg

This chart illustrates the average monthly humidity levels in Sonnberg, 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 Sonnberg is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%87%85%78%74%77%76%76%75%85%90%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sonnberg

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

Maximum UV Index Levels in Sonnberg for September

The chart shows the monthly maximum UV Index (UVI) for Sonnberg 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 Sonnberg typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689876421
Data source: Sonnberg 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 Sonnberg Compares to Other Months

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

This table compares monthly weather conditions in Sonnberg, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)31 mm (1.2 inches)90%low
February Weather3°C (38°F)29 mm (1.1 inches)87%moderate
March Weather6°C (42°F)32 mm (1.2 inches)85%moderate
April Weather10°C (51°F)36 mm (1.4 inches)78%high
May Weather15°C (59°F)81 mm (3.2 inches)73%very high
June Weather20°C (69°F)70 mm (2.7 inches)77%very high
July Weather21°C (70°F)75 mm (3.0 inches)76%very high
August Weather21°C (71°F)70 mm (2.8 inches)76%high
September Weather16°C (62°F)73 mm (2.9 inches)75%high
October Weather11°C (53°F)43 mm (1.7 inches)85%moderate
November Weather6°C (43°F)41 mm (1.6 inches)90%low
December Weather2°C (37°F)51 mm (2.0 inches)91%low

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