August in Ljubljana averages a daily high of 27.6°C with nights around 15.9°C. Expect roughly 10.4 wet days totalling 134.9mm. 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 August data.