June in Barrie averages a daily high of 23.7°C with nights around 12.3°C. Expect roughly 10.7 wet days totalling 94.3mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Barrie is May–September.
Based on SHANTY BAY, ON CA (2.6km), 1995–2024. 29 years of June data.