June in Ljubljana averages a daily high of 26.2°C with nights around 14.8°C. Expect roughly 11.6 wet days totalling 121.2mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Ljubljana is May–September.
Based on LJUBLJANA BEZIGRAD, SI (1.9km), 1995–2024. 30 years of June data.