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September Weather in Summerau, Austria

Last updated: August 22, 2025

In September, the average temperature in Summerau, Austria hovers around 14°C (57°F), with minimums dipping to 0°C (33°F) and maximums reaching up to 28°C (83°F). Be prepared for a bit of wet weather, as the region sees an average precipitation of 77 mm (3.0 in) over 11 days. With an average humidity of 82%, it's a refreshing yet slightly damp time of year!

September Temperature in Summerau

In September in Summerau, the average temperature is 14°C (57°F). Maximum temperatures can reach 28°C (83°F), while minimums can drop as low as 0°C (33°F). Be sure to pack layers to enjoy your travels comfortably in this variable climate!

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

The chart illustrates September temperature patterns in Summerau, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Summerau, September typically has an average temperature of 14°C (57°F), with highs reaching up to 28°C (83°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec303439475464656557493933
Data source: Temperature data for Summerau 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 Summerau

In Summerau in September, the precipitation amount is 77 mm (3.0 in) over the course of 11 days.

September Precipitation Trends in Summerau

The chart displays monthly precipitation patterns in Summerau, 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 Summerau, September typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec6449604611611011211177614780
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Summerau

In Summerau in September, humidity is 82%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making outdoor activities uncomfortable and travel more challenging due to the heavy, damp air.

September Average Humidity in Summerau

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

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

Maximum UV Index Levels in Summerau for September

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

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

This table compares monthly weather conditions in Summerau, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)64 mm (2.5 inches)91%low
February Weather1°C (34°F)49 mm (1.9 inches)89%moderate
March Weather4°C (39°F)60 mm (2.4 inches)87%moderate
April Weather8°C (48°F)46 mm (1.8 inches)82%high
May Weather12°C (55°F)116 mm (4.6 inches)76%very high
June Weather18°C (65°F)110 mm (4.3 inches)80%very high
July Weather18°C (65°F)112 mm (4.4 inches)80%very high
August Weather19°C (66°F)111 mm (4.4 inches)82%very high
September Weather14°C (57°F)77 mm (3.0 inches)82%high
October Weather9°C (49°F)61 mm (2.4 inches)87%moderate
November Weather4°C (39°F)47 mm (1.9 inches)89%low
December Weather1°C (34°F)80 mm (3.1 inches)92%low

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