Best time to visit Greater Sudbury

Greater Sudbury is a city of two halves. July scores 78 and December scores 16 — a 62-point swing, which is the difference between a holiday and an endurance test. The month you pick matters more here than almost anywhere. The good window runs June to September — 4 months within ten points of the best.

July is the warmest month at 25.1 °C and January the coolest at -7.8 °C — a 32.9 °C spread across the year. At the other end, 181 nights a year fall below freezing: the winter here is a real one.

There is a real wet season here. June, August, October and December carry the rain — up to 14 wet days in a month — while February to March drop as low as 9. That 5-day gap is the biggest single difference between a good month and a bad one in Greater Sudbury, and it moves further than the temperature does.

Daylight runs from 8.6 hours in winter to 15.8 in summer, enough to notice on a sightseeing itinerary.

The three strongest months are July, September, August. The one to think twice about is December. Each month below has its own page with rainfall reliability, extremes, daylight and crowd levels.

Greater Sudbury month by month