Ottawa
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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.

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%

Ottawa Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Ottawa - and find the best time to visit.

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 records 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 50 years of weather observations in Ottawa between 1976 and 2026, 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
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

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.

  • Swimming
    9/10
  • Cycling
    9/10
  • Walking
    9/10
  • Camping
    6/10
  • Outdoor sports
    9/10

Ottawa 3-Day Forecast

More climate data for Ottawa

Popular in June

Where to go in June - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.