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August Weather in Grassau, Germany

Last updated: August 23, 2025

In August, the average temperature in Grassau, Germany hovers around 18°C (64°F). However, be prepared for a range, as temperatures can dip to a cool 6°C (43°F) or soar to a warm 33°C (92°F). With 196 mm (7.7 in) of precipitation over approximately 18 days, it's wise to carry an umbrella. The air is quite humid, with an average humidity level of 80%, making it feel even warmer!

August Temperature in Grassau

In August in Grassau, the average temperature is 18°C (64°F). Maximums can reach 33°C (92°F), while minimums can drop to as low as 6°C (43°F). It's a great time for travelers to enjoy a variety of outdoor activities, but be prepared for both warm days and cooler nights.

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

The chart illustrates August temperature patterns in Grassau, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grassau, August typically has an average temperature of 18°C (64°F), with highs reaching up to 33°C (92°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec293338465363636456493932
Data source: Temperature data for Grassau 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 Grassau

In Grassau in August, the precipitation amount is 196 mm (7.7 in) over the course of 18 days.

August Precipitation Trends in Grassau

The chart displays monthly precipitation patterns in Grassau, 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 Grassau, August typically receives around 196 mm (7.7 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec1201001119420517820619614613380145
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Grassau

In Grassau in August humidity is 80%. With an average temperature of 18°C (64°F), this humidity feels like a warm, damp blanket wrapping around you, making travel a bit more exhausting as the air thickens and the heat clings to your skin.

August Average Humidity in Grassau

This chart illustrates the average monthly humidity levels in Grassau, 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 Grassau is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%89%86%83%78%79%82%80%83%90%89%90%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Grassau

In Grassau in August, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Grassau.

Maximum UV Index Levels in Grassau for August

The chart shows the monthly maximum UV Index (UVI) for Grassau 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 Grassau typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec236789986432
Data source: Grassau 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 Grassau Compares to Other Months

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

This table compares monthly weather conditions in Grassau, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)120 mm (4.7 inches)93%low
February Weather1°C (34°F)100 mm (3.9 inches)89%moderate
March Weather3°C (38°F)111 mm (4.4 inches)86%high
April Weather8°C (47°F)94 mm (3.7 inches)83%high
May Weather12°C (53°F)205 mm (8.1 inches)78%very high
June Weather17°C (63°F)178 mm (7.0 inches)79%very high
July Weather17°C (64°F)205 mm (8.1 inches)82%very high
August Weather18°C (64°F)196 mm (7.7 inches)80%very high
September Weather13°C (56°F)146 mm (5.7 inches)83%high
October Weather9°C (49°F)133 mm (5.2 inches)90%moderate
November Weather4°C (39°F)80 mm (3.1 inches)89%moderate
December Weather0°C (32°F)145 mm (5.7 inches)90%low

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