August in Graz averages a daily high of 26.2°C with nights around 15.3°C. Expect roughly 12.1 wet days totalling 130mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Graz is April–September.
Based on GRAZ, AU (1.9km), 1995–2024. 27 years of August data.