Ontario weather averages for holidays in 2017/2018

Check Ontario weather averages before you book your next holiday in 2017/2018. The average maximum daytime temperature in Ontario in August is 25°C. The holiday weather guide shown below is for Toronto.

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Ontario weather averages

Check Ontario weather averages before you book your next holiday. The warmest month in Ontario is July with an average maximum temperature of 27°C. The sunniest months are June and July with on average 9 hours of bright sunshine per day. The month with the least number of days with some rain is July with 9 days. The sea is at its warmest in Ontario in August with an average sea temperature of 21°C. The Ontario weather averages shown below are for Toronto.

Maximum daytime temperature (°C)

Hours of sunshine (daily)

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

Days with some rainfall

Sea temperature (°C)

More weather parameters

Metric (°C / mm)  |  Imperial (°F / inches)

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Ontario weather today

Here is the weather in Ontario today, Tuesday 22nd August 2017. Expect isolated thunderstorms in Ontario with a maximum temperature of 27°C, low levels of heat & humidity and 2 hours of bright sunshine. There are 10-20 mm of rainfall expected with 80% chance of some rain and a moderate breeze of 26 kph from the south-west. The weather forecast shown below is for Toronto.

  • 27
    °C maximum temperature
  • 17
    °C minimum temperature
  • isolated thunderstorms
  • 2
    hours of sunshine
  • 80
    % chance of some rain
  • <20
    mm of rainfall expected
  • L
    low heat & humidity
  • 26
    kph wind from SW

5-day weather forecast

Metric (°C / mm)  |  Imperial (°F / inches)

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Tropical storm risk: Ontario, Canada hurricane season

% of month affected by tropical storms
0
0
0
0
0
<1%
<1%
<1%
1%
<1%
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

The Ontario, Canada tropical storm risk chart above shows the hurricane season for Toronto, Ontario, Canada.

More about tropical storms

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Ontario holiday weather averages by month

Check Ontario holiday weather averages for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

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Compare Ontario weather with the USA

Below the Ontario weather chart shows maximum daytime temperature for Ontario, Canada (Toronto) and the USA (Washington). For more weather parameters or to change the destinations shown visit the comparison weather tool.

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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