March in Barrie averages a daily high of 3.5°C with nights around -5.9°C. Expect roughly 13.3 wet days totalling 59.9mm. A hard month to visit for comfort alone.
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 March data.