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Ontario Weather July

To help you choose the best time to travel, you can find climate data below on the weather in Ontario in July.
Ontario Weather July: | Niagara Falls | Toronto | |
![]() | average daily high | +27.4°C | +26.6°C |
![]() | average daily low | +17°C | +18°C |
![]() | sea temperature | +21.4°C | |
![]() | daylight hours | 15.6h | 15.6h |
![]() | sunny/overcast hours | 9.0/6.6h | |
![]() | average monthly precipitation | 79 mm | 64 mm |
Temperature in Ontario
The average daily maximum in July is +27.4 — +26.6°C, and the minimum +17 — +18°C.
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Sea temperature
The average monthly temperature in Lake Ontario on the beaches of Toronto in July is +21.4 degrees.
The water is warm enough for most people to bathe in, however a majority would still consider it too cool.
Precipitation
The normal amount of precipitation for July is from 64 to 79 mm, which may cause a change of plans on certain days.