With a population of around 6,700, Au sits in Saint Gallen, Switzerland. The city operates in the Europe/Zurich time zone.
In 2025, Au recorded an average annual temperature of 51°F. The hottest temperatures reached 89°F in June; the coolest were 20°F in November. Total precipitation for the year was 66 inches, with the wettest month being July. Snowfall for the year totaled approximately 7 inches.
View current conditions and forecast for Au · More cities in Saint Gallen