Please click on any column to get detailed information about Ottawa weather in that particular month. You will get daily weather information for that month for the last several years.
Day & Night air temperature, °F
The warmest month in Ottawa is august. The average daily temp is 81.9°F. The average nightly temp is 66.2°F.
Precipitation total, in.
Number of rainy days
This chart shows averages for the last three years. It shows medium and heavy rains only, it doesn't show light rains.
Wind speed, mph
Sunny, partly cloudy and cloudy days
Average sunny hours
Sunny hours are calculated based on the average daily number of hours while sunlight can reach the ground. It depends on day length and cloudiness during the day.
* Charts above show average data for the last 3 years.
Best time for vacation in Ottawa
Ottawa on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Ottawa
Local time: 23:33
May 19, sunday
0000
70°F
NE
6 mph
6 mph
0300
66°F
E
6 mph
6 mph
0600
66°F
S
6 mph
6 mph
0900
68°F
SW
11 mph
11 mph
1200
75°F
W
9 mph
9 mph
1500
79°F
W
6 mph
6 mph
1800
77°F
W
5 mph
5 mph
2100
68°F
W
12 mph
12 mph
