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Climate of Ontario
(Canada)

Average daytime and nighttime temperatures


All climatic diagrams on this site result from the collected data from 33 measuring stations in Ontario.
All data correspond to the average monthly values of the last 20 years.


Back to overview: Canada

Ontario is one of the warmest region in Canada with an average daily high temperature of 12 degrees centigrade. The climate is much more unsettled than in central Europe and offers varied seasons with deep winters and warm summers. It rarely gets really warm here and you can safely leave your swimwear at home. Due to the warmer temperatures the best time for traveling is from May to September. Nearly unattractive for tourists are the cold months from November to March.

Overview: Climate in Canada
Duration of daylight and sunshine in Canada


hours of sunshine per daySunshine hours per day in Ontario
rainy days per monthRainy days per month in Ontario
Precipitation in mm/dayPrecipitation in Ontario
Relative humidity in %Relative humidity in Ontario
Absolute humidity in g/m³ (approx.)Absolute humidity in Ontario
Map of Ontario

Important cities in Ontario

Ontario is a part of Canada and has an east-west extension of about 1470 km. From north to south it is approximately 990 km. The biggest cities are Toronto and Ottawa. The local time is now Sunday, 5:00 pm.

CityPopulationGeo-Position
Toronto2,965,71343°42'0"N79°24'59"W
Ottawa1,028,51445°24'40"N75°41'53"W
Mississauga769,05043°34'44"N79°39'30"W
Brampton696,97543°41'0"N79°45'59"W
Hamilton574,26343°15'0"N79°50'59"W
London426,13942°59'0"N81°13'59"W
Markham343,69843°52'1"N79°15'59"W
Vaughan325,67843°50'10"N79°29'54"W
Kitchener263,79043°25'31"N80°30'40"W
Windsor234,04842°18'0"N83°0'60"W
Oakville212,55143°27'0"N79°40'59"W
Richmond Hill203,99643°52'16"N79°26'14"W
Burlington190,19443°23'10"N79°50'14"W
Oshawa175,22043°54'0"N78°50'58"W
Greater Sudbury168,14146°29'24"N80°59'24"W
Barrie149,30244°24'0"N79°39'59"W
Guelph143,16943°32'45"N80°15'22"W
St. Catharines141,29443°10'17"N79°14'34"W
Cambridge139,99643°21'36"N80°18'46"W
Kingston135,20444°13'47"N76°28'52"W
Ajax129,49043°51'0"N79°1'58"W
Milton129,33443°31'1"N79°52'59"W
Waterloo119,86943°28'0"N80°30'59"W
Thunder Bay112,74048°22'55"N89°15'1"W
Brantford104,90243°8'0"N80°15'59"W
Niagara Falls88,07143°6'0"N79°3'59"W
Pickering87,83843°54'0"N79°7'58"W
Peterborough86,46944°18'0"N78°18'58"W
Sarnia82,99842°58'43"N82°24'15"W
Willowdale79,44043°46'0"N79°23'57"W


Data basis: German Weather Service, individual values averaged and supplemented by own elements.