Typical Run Score
89
Great
Toronto · May
Running in Toronto in May
Typical May running conditions in Toronto — and a live Run Score so you can see how today compares with the norm.
Avg temperature
57°F
Ideal
Avg dew point
47°F
Comfortable
Best window
6 AM–12 PM
Local time
Toronto · today vs the May normTemperature · dew point · wind · timing
How May compares in Toronto
May ranks 1st of 12 months for running in Toronto, with a typical daytime Run Score of 89 (Great). It's the best running month of the year here — temperatures around 57°F (14°C) and comfortable dew points. Precipitation falls in roughly 12% of hours this month. Use the live tool below to see how today actually compares with the May norm.
Running weather in nearby cities
Same engine, different climate. Check the best time to run in these cities too.
Running in Toronto in May: FAQ
Is it good to run in Toronto in May?
Yes — it's one of the better months to run here. The typical daytime Run Score is 89 (Great), with temperatures around 57°F (14°C) and comfortable dew points. The best window is usually 6 AM–12 PM.
How hot is it for running in Toronto in May?
Typical temperatures average 57°F (14°C) (Ideal) with dew points near 47°F. Dew point — not the thermometer — usually decides how hard the run feels.
What is a good Run Score?
Scores run 0–100. 97+ is Perfect, 80–96 is Great — conditions are actively working in your favour. 65–79 (Good) is solid. 45–64 (Mixed) means at least one factor — usually heat or dew point — is taxing you. Below 45 (Poor), expect a noticeably harder effort or hold back for safety.
Why does dew point matter more than temperature?
Your body cools by evaporating sweat. When the dew point climbs above roughly 60°F, the air is too saturated for sweat to evaporate efficiently, so heat builds up even if the thermometer looks reasonable. That's why a 70°F muggy morning can feel harder than a dry 80°F afternoon.
Get this on every run, automatically
RunWeather syncs with Strava, plans your week, and learns your heat tolerance — so the right time to run finds you.