Grassau Weather & Climate: Best Time to Visit

In Grassau, temperatures differ significantly between summer and winter months. Average maximum daytime temperatures range from a comfortable 23°C (73°F) in July, the warmest time of the year, to a chilly 3°C (37°F) during cooler months like January.

At night, you can expect temperatures ranging from 13°C (55°F) in July to around -5°C (23°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Grassau experiences significant rain/snowfall throughout the year, averaging 1688 mm (66 in) of precipitation annually. While rainfall varies throughout the year, each season offers its own charm. June brings wetter days averaging 204 mm (8 in) of precipitation, spread over 19 rainy days.

In contrast, the driest month November experiences a drier climate, with about 103 mm (4.1 in) of rainfall spread across 14 rainy days. For more details, please visit our Grassau Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Seasonal changes in sunshine hours are quite dramatic in Grassau. While July receives considerable daily sunshine with up to 7.2 hours, December marks the darkest time of the year, where sunshine is scarce with only 2.1 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is moderate throughout the year in Grassau.

The city experiences its highest humidity in December, reaching 76%. In May, the humidity drops to its lowest level at 48%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year