April in Barrie averages a daily high of 10.9°C with nights around 0.5°C. Expect roughly 12.4 wet days totalling 77.1mm. Demanding conditions — pack for it and plan indoor options.
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 April data.