Ontario weather by month

Check out Ontario weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum daytime temperature °F
Hours of sunshine (daily)
Days with some rainfall
Sea temperature °F

More about Ontario

Ontario by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Ontario

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The climate guide for Ontario (Toronto) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Ontario destinations

Below are average maximum temperatures at popular countries, regions and places in Ontario for next month - December. Select a destination to see the climate guide for all months of the year.

All Ontario destinations

Metric (°C)  |  Imperial (°F)

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Tropical storm risk: Ontario, Canada hurricane season

% of month affected by tropical storms
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More about Canada

Compare Ontario with the USA

Below the Ontario chart shows average maximum daytime temperature for Ontario, Canada (Toronto) and the USA (Washington).

Maximum daytime temperature (°F)

Ontario, Canada (Toronto)
USA (Washington)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

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