January in Barrie averages a daily high of -2.8°C with nights around -10.8°C. Expect roughly 18.2 wet days totalling 89.8mm. 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. 30 years of January data.