Ottawa, Canada: Annual Weather Averages

July is the hottest month in Ottawa with an average temperature of 21.5°C (71°F) and the coldest is January at -9.5°C (15°F). The wettest month is July with an average of 90mm of rain. .

Average Temperature: Ottawa

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -10 -9 -3 6 14 18 22 20 16 9 2 -6
°F 15 17 28 43 56 64 71 67 60 48 36 21

Average High/Low Temperature: Ottawa

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High °C -4 -4 2 11 19 23 27 25 22 15 7 -1
High °F 25 25 36 52 66 73 81 77 72 59 45 30
Low °C -15 -13 -7 1 8 13 16 14 9 3 -3 -11
Low °F 5 9 19 34 46 55 61 57 48 37 27 12

Average Rainfall: Ottawa

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 60 60 70 80 80 80 90 90 90 90 90 90
Days 8 5 9 14 17 16 16 15 15 16 15 9

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