With a population of around 1,100, Au sits in Vorarlberg, Austria. The city operates in the Central European time zone.
In 2025, Au recorded an average annual temperature of 49°F. The hottest temperatures reached 85°F in June; the coolest were 9°F in January. Total precipitation for the year was 60 inches, with the wettest month being July. Snowfall for the year totaled approximately 26 inches.
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