Ottawa Weather in July
With daytime temperatures of 27°C (81°F) and nighttime lows of 15°C (59°F), July in Ottawa brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 102 mm (4 in) falls on average.
Rainfall in Ottawa in July
Expect around 11 days of rain based on historical data, with 102 mm (4 in) average. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Ottawa in July
In July, Ottawa sees high temperatures, with highs of 27°C (81°F). Nights drop to around 15°C (59°F). Experience the summer season in July. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights drop to around 15°C (59°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable. On average, this month sees the highest temperatures of the year. Worth packing a few lighter outfits.
Sunshine in Ottawa in July
The month enjoys around 280 hours of sunshine, creating mostly sunny days with good weather conditions.If you prefer enjoying temperate temperatures and rain-free days, May, August and September typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Ottawa's climate page.
Ottawa Temperature in July
Min Temperature
15°C (59°F)
Max Temperature
27°C (81°F)
Chance of Rain
38%
Precipitation
102 mm (4 in)
Rainy days
11 days
Humidity
53%
Sunshine
280 hours
Percentage Sunshine
59%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ottawa typically stay consistent throughout July, with daily highs averaging around 27°C (81°F). Nights are pleasant, with lows typically ranging from 15°C (59°F) to 17°C (63°F).
Average temperatures in July
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in July
Historical weather for Ottawa in July
Browse day-by-day weather records for Ottawa spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ottawa historical weather extremes in July
The extremes listed below come from historical weather data collected in Ottawa from 1976 through 2025.
- The hottest July day on record in Ottawa reached 36°C (97°F) (July 21, 2011).
- The coldest July day was on July 19, 1997, with a maximum of 17°C (63°F).
- The lowest overnight temperature recorded in July was 7°C (45°F) (July 28, 2005).
Best Places in Canada in July
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in July →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Ottawa in July
Warm temperatures in July make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Ottawa in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Ottawa's climate page.
Temperature Rainfall Sunshine Humidity
See the full Ottawa climate overview or explore weather in Canada.
