April in Greater Sudbury averages a daily high of 7.7°C with nights around -3°C. Expect roughly 13.5 wet days totalling 71.7mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Greater Sudbury is June–September.
Based on SUDBURY CLIMATE, ON CA (21.6km), 1995–2024. 13 years of April data.