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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 °C | ||||||||||||
| Hours of sunshine (daily) | ||||||||||||
| Days with some rainfall | ||||||||||||
| Sea temperature °C |
More about Ontario
Ontario by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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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 destinations in Ontario for next month - May. Select a destination to see the climate guide for all months of the year.
All Ontario destinations
- Hamilton
- Kenora
- Kingston
- Moosonee
- Niagara Falls
- North Bay
- Ottawa
- Peawanuk
- Sault Ste. Marie
- Sudbury
- Thunder Bay
- Timmins
- Toronto
- Windsor
Metric (°C / mm) | Imperial (°F / inches)
Tropical storm risk: Ontario, Canada hurricane season
% of month affected by tropical storms
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
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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 (°C)
Ontario, Canada (Toronto)
USA (Washington)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Metric (°C / mm) | Imperial (°F / inches)
Compare more Ontario weather >>
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