June in Jena averages a daily high of 24.2°C with nights around 12.2°C. Expect roughly 12.2 wet days totalling 50.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Jena is May–September.
Based on JENA STERNWARTE, GM (0.5km), 1995–2024. 30 years of June data.