June in Cannes averages a daily high of 25°C with nights around 18.6°C. Expect roughly 4.4 wet days totalling 31.1mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Cannes is May–October.
Based on NICE, FR (19.2km), 1995–2024. 30 years of June data.