Ottawa Weather in July
July Climate Overview
July is Ottawa's hottest and sunniest month. Canada Day on July 1 draws 1+ million visitors to Parliament Hill, and RBC Ottawa Bluesfest brings 150,000+ music fans. Heat waves can push temperatures to 32-35 °C with humidex making it feel 35-40 °C.
Source: Environment Canada Climate Normals 1991–2020 (Ottawa City station)
What to Expect
- Hottest and sunniest month of the year
- Heat waves push temperatures to 32-35 °C (humidex 35-40 °C)
- Ottawa averages ~12 days above 30 °C, mostly in July
- Peak tourist season with major festivals
Things to Do in July
- Canada Day (July 1): Parliament Hill fireworks, concerts, Snowbirds flyover
- RBC Ottawa Bluesfest (July 9–19, 2026): 200+ acts at LeBreton Flats
- Swimming at Mooney's Bay, Petrie Island, Britannia Beach
- Kayaking and whitewater rafting on the Ottawa River
- Cycling the full NCC pathway network
- ByWard Market and patio dining citywide
What to Wear
Weather Tips for Visitors
- !Heat warnings issued when humidex reaches 40+ °C; Ottawa has cooling centres
- !UV index peaks in July (often 8-10) — reapply sunscreen every 2 hours
- !Thunderstorm season continues; bring a rain poncho to outdoor events
- !Check humidex forecasts when planning outdoor activities
Seasonal Highlights
- Canada Day: Parliament Hill celebrations, fireworks at midnight
- Bluesfest: Canada's largest multi-genre outdoor music festival
- Peak swimming and patio season
July in Ottawa — FAQ
What is the weather like in Ottawa in July?
July in Ottawa has an average high of 26.7°C and low of 15.8°C. July is Ottawa's hottest and sunniest month. Canada Day on July 1 draws 1+ million visitors to Parliament Hill, and RBC Ottawa Bluesfest brings 150,000+ music fans. Heat waves can push temperatures to 32-35 °C with humidex making it feel 35-40 °C.
What should I wear in Ottawa in July?
For July in Ottawa (26.7°C avg high), pack: Summer clothing: T-shirts, shorts, sundresses, Sunscreen SPF 30+ and UV-protective sunglasses, Light rain jacket or packable umbrella, Comfortable walking shoes or sandals, Hat for sun protection, Insect repellent for evenings near water. Heat warnings issued when humidex reaches 40+ °C; Ottawa has cooling centres
Is July a good time to visit Ottawa?
July is hot in Ottawa with 276 hours of sunshine. Top activities include: Canada Day (July 1): Parliament Hill fireworks, concerts, Snowbirds flyover; RBC Ottawa Bluesfest (July 9–19, 2026): 200+ acts at LeBreton Flats; Swimming at Mooney's Bay, Petrie Island, Britannia Beach.
Does it snow in Ottawa in July?
No, Ottawa does not typically receive snow in July. Monthly precipitation averages 92 mm, falling as rain.
What events happen in Ottawa in July?
Key events in July: Canada Day: Parliament Hill celebrations, fireworks at midnight. Bluesfest: Canada's largest multi-genre outdoor music festival. Peak swimming and patio season. Canada Day (Jul 1) & Bluesfest (Jul 9–19).
