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Ottawa, Canada Weather Averages

July is the hottest month in Ottawa with an average temperature of 22°C (71°F) and the coldest is January at -9°C (15°F). The wettest month is July with an average of 90mm of rain..

Average Temperature Ottawa

What is Average Temperature?
The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month
What is Average Temperature?
The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month

Average High Low Temperature Ottawa

What is Average High Low Temperature?
The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily
What is Average High Low Temperature?
The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily

Average Rainfall Ottawa

What is Average Rainfall?
The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years
What is Average Rainfall?
The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years

Ottawa : Next 24-Hour Weather

Today - 11th June 2026

Sunrise 05:14

Sunrise

Sunset 20:50

Sunset
17:00
Patchy rain possible
28°C (82°F)
18:00
Patchy rain possible
28°C (81°F)
19:00
Patchy rain possible
26°C (78°F)
20:00
Patchy rain possible
25°C (75°F)
21:00
Clear
23°C (73°F)
22:00
Clear
22°C (71°F)
23:00
Clear
21°C (70°F)

Tomorrow - 12th June 2026

Sunrise 05:14

Sunrise

Sunset 20:50

Sunset
0:00
Clear
21°C (69°F)
1:00
Clear
20°C (67°F)
2:00
Mist
20°C (67°F)
3:00
Mist
19°C (66°F)
4:00
Mist
19°C (65°F)
5:00
Mist
19°C (65°F)
6:00
Mist
20°C (67°F)
7:00
Mist
21°C (69°F)
8:00
Partly cloudy
22°C (72°F)
9:00
Overcast
24°C (74°F)
10:00
Overcast
25°C (77°F)
11:00
Patchy rain possible
26°C (78°F)
12:00
Light drizzle
26°C (78°F)
13:00
Light rain shower
25°C (77°F)
14:00
Light rain
24°C (75°F)
15:00
Light rain shower
23°C (73°F)
16:00
Clear
24°C (74°F)