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August Weather in Vienna, United States

Last updated: June 24, 2025

In August, the average temperature in Vienna, United States hovers around a warm 28°C (83°F). While the minimum can dip to 18°C (65°F), it can also rise to a sweltering 39°C (103°F). Expect 103 mm (4.1 in) of precipitation spread across 18 days, contributing to an average humidity level of 79%. Stay prepared for a mix of warmth and moisture!

August Temperature in Vienna

In August in Vienna, the average temperature is 28°C (83°F). Maximums can reach 39°C (103°F), while minimums can drop to as low as 18°C (65°F). It's an ideal time for travelers to enjoy warm weather, so be sure to pack accordingly for both the heat and cooler evenings.

August Weather in Vienna: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Vienna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vienna, August typically has an average temperature of 28°C (83°F), with highs reaching up to 39°C (103°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec515761677580838280715853
Data source: Temperature data for Vienna 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.

August Precipitation in Vienna

In Vienna in August, the precipitation amount is 103 mm (4.1 in) distributed over 18 days.

August Precipitation Trends in Vienna

The chart displays monthly precipitation patterns in Vienna, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Vienna, August typically receives around 103 mm (4.1 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec7911687110838710810310710158120
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Vienna

In Vienna in August humidity is 79%. With an average temperature of 28°C (83°F), this humidity feels like a thick blanket wrapping around you, making outdoor activities a challenge but also adding a certain tropical charm to your travel experience.

August Average Humidity in Vienna

This chart illustrates the average monthly humidity levels in Vienna, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Vienna is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%82%80%76%73%74%80%79%83%77%84%88%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Vienna

In Vienna in August, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Vienna.

Maximum UV Index Levels in Vienna for August

The chart shows the monthly maximum UV Index (UVI) for Vienna in August, 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 August, the maximum UV index in Vienna typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec479101111111110864
Data source: Vienna August 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 August Weather in Vienna Compares to Other Months

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

This table compares monthly weather conditions in Vienna, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (51°F)79 mm (3.1 inches)85%moderate
February Weather14°C (57°F)116 mm (4.5 inches)82%high
March Weather16°C (62°F)87 mm (3.4 inches)80%very high
April Weather19°C (67°F)110 mm (4.3 inches)76%very high
May Weather24°C (76°F)83 mm (3.3 inches)73%extreme
June Weather27°C (81°F)87 mm (3.4 inches)74%extreme
July Weather28°C (83°F)108 mm (4.2 inches)80%extreme
August Weather28°C (83°F)103 mm (4.1 inches)79%extreme
September Weather26°C (80°F)107 mm (4.2 inches)83%very high
October Weather22°C (72°F)101 mm (4.0 inches)77%very high
November Weather14°C (58°F)58 mm (2.3 inches)84%high
December Weather12°C (53°F)120 mm (4.7 inches)88%moderate

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