June in Graz averages a daily high of 25.3°C with nights around 14.1°C. Expect roughly 13.5 wet days totalling 118.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Graz is April–September.
Based on GRAZ, AU (1.9km), 1995–2024. 28 years of June data.