Ontario Weather

Up to the minute weather reports
for all areas of this huge province...


Most foreigners see Ontario weather and Canada weather in general as being cold and blanketed in snow for much of the year. While it is true that a small portion of the province is subarctic in climate the bulk of the land enjoys 4 seasons a year and average temperatures vary considerably from north to south, region-to-region and even within a region.

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Ontario is such a massive province it is actually comprised of 3 main climatic regions:
  • Southwestern Ontario weather - has a humid continental climate with warm (sometimes very hot), humid summers and cold winters. Precipitation ranges from 75 – 100 cm (30 – 39 in) annually. Rainfall is pretty consistently light throughout the year except though the winter months when snow falls from December to April. Southern Ontario has one of the mildest climates in Canada because of the moderating effects of the Great Lakes and dare I say, some effects due to global warming.


  • Central and Eastern Ontario weather - has a more severe humid continental climate with very hot summers and long cold winters. Precipitation is about equal to Southern Ontario‘s but with more snowfall.


  • Northern Ontario weather - has a continental climate with long cold winters and short summers, snowfall can stay on the ground for over half the year but precipitation averages only 70 cm (28 in) annually because of moderating factors around Hudson Bay, James Bay and Lake Superior. The most northern parts of the province have a subarctic climate with severely cold winters and short cool to warm summers.


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Trying to determine the best time to travel to Ontario really depends on where you travel and what you are expecting to do during your Ontario vacation. Obviously if you are looking to go boating or camping you would most likely be visiting in the summer months but if you are looking to go ice fishing or skiing you will be making a winter visit.


Any time of the year is really a great time to visit but as you travel further and further up north winter travel is generally not very popular. Another thing to consider especially as you travel into the wilderness areas are the insects. Mosquitoes and black flies are a real concern the further north you travel and visitors should definitely be prepared with repellants and lotions during “bug season” otherwise you will suffer severe bites.

Quick facts on when to travel
  • On average the coldest month in the province is January and the hottest month is July. Ontario enjoys warm summers in July and August and comfortable temperatures in Spring (May and June), and Fall (September and August).

  • Generally the summer months are the most popular months for visitors to Ontario Canada but these are also the most popular months among Canadians to vacation. Expect full campgrounds, tourist attractions etc. and also peak rates for rooms. Rental cars etc.

  • Fall is a great time to travel to Ontario as the foliage displays its autumn colours in all nature’s glory. Algonquin Park is an extremely popular destination at this time to experience the dazzling array of colours and hues.

  • Winter allows visitors to experience Ontario attractions and activities not otherwise available. The landscape is usually covered with snow allowing for the ultimate Canadian winter experience.


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What to pack for your Ontario adventure...

  • If traveling to Ontario in winter (December, January, February) bring a parka or snowsuit, waterproof gortex gloves, warm hats and warm boots and wool socks. Wear the clothing in layers to keep warm.

  • If traveling to Ontario in spring (March, April, May) bring medium coats or a parka, windbreakers, sweaters, cargo pants and hiking boots.

  • If traveling to Ontario in summer (June, July, August) bring shorts, t-shirts, sandals or sneakers and maybe some sweaters for cool nights.

  • If traveling to Ontario in fall (September, October, November) bring medium coats, long pants and sweaters for cool nights.


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Today's Weather Report (click on a button for a full report)



Central Ontario



Southwestern Ontario



Eastern Ontario



Northern Ontario



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