July in Barrie averages a daily high of 26.1°C with nights around 14.9°C. Expect roughly 10.1 wet days totalling 82mm. 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. 28 years of July data.