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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Scene Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
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Ottawa’s weather is defined by sharp seasonal swings: hot, humid summers and cold, snowy winters. The live forecast above shows today’s conditions, but the best travel months are May through October, when temperatures are comfortable for exploring the capital’s parks, museums and canal.
What is the best time to visit Ottawa?
Late spring (May–June) and early autumn (September–October) offer the most pleasant weather, with highs in the high teens to mid-20s °C. July and August are peak summer—warm and humid, often reaching 30°C—ideal for outdoor festivals like the Tulip Festival or Canada Day. Winter (December–February) averages −10°C to −15°C, but the Rideau Canal Skateway draws snowbirds and March-break families who embrace the cold.
What should you pack for Ottawa?
In summer, pack light layers, a rain jacket and comfortable walking shoes for the city’s many parks and pathways. From November through March, you will need a warm winter coat, insulated boots, gloves and a hat—wind chills can drop below −20°C. A scarf or neck warmer helps against the Ottawa River breeze. Spring and fall require a mid-weight jacket and waterproof footwear for sudden showers.
Does Ottawa get humid in summer?
Yes. Humidity pushes July and August humidex values above 35°C at times, making it feel hotter than the thermometer reads. Pack breathable fabrics and plan indoor breaks on peak days.
Is Ottawa safe to drive in winter?
Roads are well maintained but snow and ice are common from December to March. Winter tires are mandatory in Quebec, and highly recommended for Ottawa. Allow extra time for commutes and check weather warnings before heading out.
When does the Rideau Canal skateway open?
Typically mid-January to late February, depending on sustained cold. Check the National Capital Commission’s ice conditions daily—the skateway rarely opens before two weeks of −10°C nights.
For more Canadian travel weather, see our Canada weather hub or compare conditions in Toronto and Vancouver.