Ontario Weather December

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


Ontario Weather December:	Niagara Falls	Toronto

average daily high	+2.7°C	+2.1°C
average daily low	-4.1°C	-3.1°C
sea temperature		+5°C

daylight hours	9.6h	9.6h
sunny/overcast hours		2.5/7.1h
average monthly precipitation	81 mm	62 mm

Temperature in Ontario

The average daily maximum in December is +2.7 — +2.1°C, and the minimum -4.1 — -3.1°C.

The average monthly temperature in Lake Ontario on the beaches of Toronto in December is +5 degrees.

The water is very cold and only suitable to bathe in shortly for the most hardy people.

The normal amount of precipitation for December is from 62 to 81 mm, which may cause a change of plans on certain days.