Which is the hottest month in Ottawa?

The hottest time of year in Ottawa is normally July. Expect maximum daytime temperatures to reach 26°C with low heat and humidity.

Which month has the most rain in Ottawa?

In terms of rainfall, July is usually the wettest month in Ottawa with 88mm on average. There are normally 11 days in July with some rain.

When is it sunniest in Ottawa?

The sunniest time of year in Ottawa is normally July with bright sunshine on average for 59% of daylight hours; that's 9 hours of sunshine per day.

Best time to visit Ottawa

Q: When is the best time to visit Ottawa?

The best time to visit Ottawa is July based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 10 hours or more.

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Ottawa by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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When is the best time to visit Ottawa?

The best time to visit Ottawa is July based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

0
Jan
0.5
Feb
1
Mar
1.5
Apr
2.5
May
4
Jun
4.5
Jul
4
Aug
3
Sep
0.5
Oct
0
Nov
0
Dec

Change criteria

Max Day Temperature (°C)

-6
Jan
-4
Feb
2
Mar
11
Apr
18
May
23
Jun
26
Jul
25
Aug
20
Sep
13
Oct
5
Nov
-4
Dec

Hours of Sunshine (daily)

3
Jan
5
Feb
5
Mar
6
Apr
7
May
8
Jun
9
Jul
8
Aug
6
Sep
4
Oct
3
Nov
3
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for Ontario (Ottawa) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)