Ottawa Weather in June
In Ottawa, June brings high daytime temperatures around 25°C (77°F), with nights cooling to 12°C (54°F). It is the wettest month of the year, so expect more rainfall than usual.
Rainfall in Ottawa in June
As the month with the most rain, you'll want to have an umbrella with you to manage the frequent showers. You can typically expect 12 days of rain this month, averaging around 105 mm (4.1 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Ottawa in June
In June, expect high temperatures in Ottawa, with highs of 25°C (77°F) and lows of 12°C (54°F) at night. The summer season is characteristic of June. This kind of day-to-night contrast is typical for this time of year. Nights drop to around 12°C (54°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.
Sunshine in Ottawa in June
Expect sunny days throughout the month, with an estimated 255 hours of sunshine. This makes it a pleasant time to visit Ottawa.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, August and September typically offer the best weather for Ottawa.
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 June
Min Temperature
12°C (54°F)
Max Temperature
25°C (77°F)
Chance of Rain
40%
Precipitation
105 mm (4.1 in)
Rainy days
12 days
Humidity
54%
Sunshine
255 hours
Percentage Sunshine
54%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ottawa typically rise from around 21°C (70°F) at the start of June to approximately 25°C (77°F) by the end. Nights are cool, with lows typically ranging from 10°C (50°F) to 15°C (59°F).
Average temperatures in June
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 June
Historical weather for Ottawa in June
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 June
Based on 49 years of weather observations in Ottawa between 1976 and 2025, these are the recorded extremes.
- Ottawa recorded its highest June temperature of 35°C (95°F) on June 23, 2025.
- On June 7, 1977, Ottawa saw its coldest June day with temperatures maxing out at 11°C (52°F).
- Nighttime temperatures dropped to 0°C (32°F) on June 9, 1980, marking the coldest June night on record.
Best Places in Canada in June
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in June →
perfect weather
pleasant
tolerable
unpleasant
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What to Wear in Ottawa in June
For Ottawa in June, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Ottawa in June
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.
