June in Rennes averages a daily high of 22.9°C with nights around 12.2°C. Expect roughly 10 wet days totalling 52.2mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Rennes is May–September.
Based on RENNES ST JACQUES, FR (6.4km), 1995–2024. 30 years of June data.