Weather in Greater Sudbury in July

Prime time. July is about as good as Greater Sudbury gets. Highs average 25.1 °C, lows 13.4 °C, and rain falls on 12 days — nothing in the month is working against you.

July is the highest-scoring month of the twelve. The nearest rival is September, and the month at the other end of the year is December.

Rain on 12 days, 2 of them heavy. Enough to need a plan B, not enough to need a plan around it. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

The averages here are honest — no hidden extremes worth planning around. Across the twenty years measured, the hottest July day reached 36.8 °C and the coldest night fell to 6 °C, and the wettest single day dropped 35 mm — roughly 47% of the month's rain in one day.

July is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest July on record still delivered 115 mm against 35 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 75 mm average is a reasonable planning figure, not a promise.

Wind is light at 2 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 75%, high enough to notice on the warm days without dominating them.

How July sits in the year

Temperatures hold steady either side: 21.9 °C in June, 25.1 here, 24.5 in August. Nothing about the timing within the month matters much.

Daylight in July

July is at or near the longest days of Greater Sudbury's year: 15.5 hours of daylight, losing 0.8 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.

An inland climate

Greater Sudbury has no sea to moderate it, and it shows: 43.2 °C separates the hottest afternoon of the year from the coldest night. That is a genuinely continental range, and it means summer and winter here are barely the same place.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

July in Greater Sudbury versus nearby

If Greater Sudbury is one option among several, the nearby comparison is worth making. Barrie is close enough to be a coin toss — within a degree on temperature, 1 day less rain. Peterborough is close enough to be a coin toss — 3.4 °C warmer, the same number of rain days.

So: July is the answer for Greater Sudbury. If it is booked out or priced out, September is the next best thing at 0 points behind, and December is the month to keep off the shortlist.

Every month in Greater Sudbury

See all twelve months in Greater Sudbury, or where else to go in July.