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In Oct, Ontario typically sees ~17°C daytime highs and 7 rainy days.
Top-rated tours and tickets from €41 — book ahead for the popular ones.
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Ontario is Canada's second-largest province, and the most populous, with more than 14 million inhabitants. It is home to the Canadian capital city of Ottawa, and Toronto, which is Ontario's capital and Canada's largest city. Stretching from the shores of Hudson Bay (an arm of the Arctic Ocean) in the north to four of the five Great Lakes in the South and from Manitoba in the west to Quebec in the east, Ontario is truly massive at over a million square kilometres (almost half a million square miles).
Guide content from Wikivoyage contributors (CC BY-SA).
Flight prices are real fares travellers found in the last 48 hours, refreshed daily — the booking site confirms the final price. Train, bus and ferry fares are shown on the operators' booking sites. Weather data by Open-Meteo; exchange rates: ECB reference. Data updated 2026-10-29. Some links earn Stayonomy a commission at no cost to you.
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