Ottawa weather in July
Long-run climate averages for Ottawa, Ontario in July, plus what the forecast models say for the days ahead.
In July, Ottawa averages 26°C by day and 18°C at night. The wettest month is usually August.
July in Ottawa averages a daytime high of 26°C and an overnight low of 18°C, which reads as warm for this part of the world. It is the warmest month of the year here. Across the whole year Ottawa sees roughly 1154 mm of precipitation.
Climate averages tell you what to pack. They do not tell you what next Tuesday looks like — for that, see the live Ottawa forecast with every model compared and how much they currently agree.
Ottawa weather by month
what to expect in Ottawa through the yearHere is Ottawa's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to Ottawa by season.