Our weather and climate analysis offers a detailed understanding of average weather patterns for locations across the globe. Derived from 26 years of historical simulated weather data from ECMWF, it provides valuable insights into typical weather conditions, including air temperature, humidity, precipitation, cloud cover and wind. It is important to note the data is not observational, but rather derived from climate reanalysis.
Our database was last updated in January 2026, and current weather and climate guides are derived from an hourly dataset spanning 26 years (2000 to 2025). Our database contain modified Copernicus Climate Change Service information for these years. Refer to our Terms for full acknowledgements and disclaimers.
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Discover if upcoming months are expected to be warmer, colder, wetter, or drier than average
What is the best time to visit Toronto to enjoy the optimal weather conditions?
This quick reference weather table contains a summary of the annual climate trends in Toronto. It contains key metrics, including average monthly high & low temperatures, rainfall, humidity and UV index. The data is presented on a monthly basis, allowing you to see how each these weather components change throughout the year.
Toronto's long-term climate patterns earn these Weather Badges.
Explore the most extreme weather events in Toronto over the past 26 years, including record highs and lows for temperatures, rainfall, and wind speeds. This data is sourced from the latest ERA5 reanalysis model spanning 2000 to 2025.
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Weather guides, climate insights, and travel planning stories that talk about Toronto.
The year-round weather in Toronto features a pronounced seasonal variation, creating a distinct contrast between warm summer conditions and bitterly cold winters. WeatherBox data shows that temperatures vary by 24.9°C (44.8°F) across the annual climate cycle. Summer months provide a pleasant average daily temperature of 20.1°C (68.2°F), with daily highs peaking at 23.6°C (74.5°F) during the warmest period. Extreme heat is uncommon, as daily maximums rarely exceed 26.7°C (80.1°F). Winter introduces freezing daily averages of -2.4°C (27.7°F), with the coldest average lows reaching -6.9°C (19.6°F). The local temperature rarely falls below -15.1°C (4.8°F) during the sharpest cold snaps.
Precipitation delivers a relatively steady moisture supply throughout the year, accumulating an average annual total of 975 mm (38 in). The wettest month generates 100 mm (4 in) of precipitation, while the driest averages 66 mm (3 in). Atmospheric moisture establishes moderate humidity levels, with average relative humidity spanning from 72.6 to 77.8. Sunlight and cloud cover fluctuate dramatically with the seasons. Cloud coverage hits an overcast peak of 89.9 in winter but clears to a low of 27.9 by late summer. The brightest month offers 319.5 hours of sunshine, during which the average peak UV Index is 6.8, whereas the darkest winter month provides a minimal 64.0 hours.
Seasonal transitions also influence the local air currents, producing blustery wind patterns during the colder months. Mean wind speeds peak at 21.8 km/h (13.5 mph) during the windiest time of year, though intense gales are unusual, as speeds rarely exceed 41.0 km/h (25.5 mph). This elevated winter air movement creates a brisk outdoor environment before settling into calmer conditions by summer. You are invited to explore advanced weather charts on the WeatherBox website to gather more comprehensive insights into these typical climatic conditions.