Weather in Toronto

Toronto is in Canada at 43.7°N. The 2001–2020 NASA POWER daily record describes a continental climate with a wide temperature swing. July is the warmest month (average 21.6°C, high 24.9°C) and February is the coolest (average -2.8°C, low -5.4°C).

Rain is about 774 mm of rain spread through the year. The wettest month is July at 75 mm; the driest is February at 49 mm. On this site the months that score closest to a 22°C day, lighter rain, and moderate humidity are July, August, and September.

Best months to visit Toronto

The three months with the highest comfort score are July, August, and September: July (21.6°C average, 75 mm, 72% humidity); August (21.6°C average, 59 mm, 72% humidity); September (18.3°C average, 66 mm, 74% humidity). They fall in calendar order. The score rewards averages near 22°C, lower rainfall, and humidity near 60%. It is a climate score, not a festival or price calendar.

If you prefer the hottest stretch, that is July. The coolest stretch is February.

Hot and cool months in Toronto

Toronto has a 24.4°C gap between its coolest monthly average (-2.8°C in February) and its warmest (21.6°C in July). That is a northern-hemisphere pattern.

Mean high across all twelve months is 11.9°C and mean low is 6.2°C. These are 20-year grid averages, so a city station can read a few degrees warmer or cooler.

Rain through the year

Annual rainfall is 774 mm. July leads at 75 mm; February is lightest at 49 mm.

A rainy day here is a day with at least 1 mm in the NASA POWER series. July averages 15 such days; February averages 12.

The calendar in Toronto

The year bottoms out in February. Plan for -5.4°C at night and -0.2°C in the afternoon. March stands apart from the months beside it: 3.5°C / -2.1°C and 53 mm. April: 8.8°C high, 2.3°C low, 71 mm rain, 79% humidity. In May, Toronto averages 14.9°C by day and 7.7°C at night, with 73 mm of rain. June brings 71 mm and 15 rainy days; temperatures run from 14.1°C to 21.0°C.

July is both the hottest and wettest month: highs around 24.9°C, 75 mm of rain, and 72% humidity. In September, Toronto averages 21.2°C by day and 15.4°C at night, with 66 mm of rain. In October, Toronto averages 14.1°C by day and 9.0°C at night, with 74 mm of rain. November: 7.7°C high, 3.1°C low, 66 mm rain, 81% humidity. December stands apart from the months beside it: 2.5°C / -1.6°C and 63 mm.

How Toronto compares inside Canada

Montréal is about 502 km away: Toronto is about as warm as Montréal at the hot peak and 312 mm drier over the year than Montréal. Montréal’s wettest month is October (114 mm) versus July here.

Calgary is about 2708 km away: Toronto is 5.1°C warmer than Calgary in its hottest month and 228 mm wetter over the year than Calgary. Calgary’s wettest month is June (115 mm) versus July here.