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Ontario Weather June

To help you choose the best time to travel, you can find climate data below on the weather in Ontario in June.

Ontario Weather June:Niagara FallsToronto
day temperatureaverage daily high+24.5°C+23.8°C
night temperatureaverage daily low+13.7°C+14.9°C
sea temperaturesea temperature+14.3°C
Daylight hoursdaylight hours15.9h16.0h
sunny hours per daysunny/overcast hours8.7/7.3h
average monthly precipitationaverage monthly precipitation81 mm71 mm

Best places in Ontario

Temperature in Ontario

The average daily maximum in June is +24.5 — +23.8°C, and the minimum +13.7 — +14.9°C.

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Best places in Ontario:


Niagara Falls



Blue Mountain

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Sea temperature

The average monthly temperature in Lake Ontario on the beaches of Toronto in June is +14.3 degrees.

The water is cold and only apt for bathing for the most hardy people.

Ontario climate by month


The normal amount of precipitation for June is from 71 to 81 mm, which may cause a change of plans on certain days.