June in Zagreb averages a daily high of 27.1°C with nights around 16.9°C. Expect roughly 11.1 wet days totalling 83.5mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Zagreb is April–October.
Based on ZAGREB GRIC, HR (0.3km), 1995–2024. 28 years of June data.