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When is the best time to visit Ottawa?
In general the best time to visit Ottawa is probably July, when the weather is usually great. The hottest months are June, July, August, while the coldest months are January, February, December.
Depending on the activities you want to experience, you may choose different months to visit:
- The best time for a sun tanning holiday is June, July, August. Average maximum temperatures are up to +81°F in July and it has 3 sunny days on average.
- In general, it’s pleasant to walk and do outdoor activities during May - September.
- If you want to avoid wet weather, then your choice is October, November, December with the lowest chance of rain.
Average weather in Ottawa in different months
This is the average weather in Ottawa for each month based on historic data:
May, June, July, August usually has good weather. Average maximum temperature reaches +81°F during July.
In January, February, March, April, September, October, November, December the weather is OK. Expect around 68 snowy days, and the precipitation amounts to approximately 50 mm in December.
Climate in Ottawa
Here is the detailed breakdown of the climate in Ottawa for each month:
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum Temperature | |||||||||||
| +55°F | +55°F | +81°F | +90°F | +95°F | +97°F | +97°F | +97°F | +95°F | +86°F | +73°F | +63°F |
| Average Maximum Temperature | |||||||||||
| +23°F | +27°F | +37°F | +54°F | +68°F | +75°F | +81°F | +77°F | +70°F | +55°F | +43°F | +30°F |
| Minimum Temperature | |||||||||||
| -33°F | -26°F | -20°F | 0°F | +23°F | +32°F | +43°F | +39°F | +27°F | +18°F | -4°F | -27°F |
| Avg. water temperature | |||||||||||
| - | - | - | - | - | - | - | - | - | - | - | - |
| Humidity, % | |||||||||||
| 74 | 70 | 67 | 62 | 62 | 68 | 69 | 72 | 75 | 76 | 76 | 78 |
| Rain, mm | |||||||||||
| 13 | 12 | 28 | 71 | 86 | 91 | 91 | 85 | 88 | 90 | 53 | 23 |
| Snow, mm | |||||||||||
| 47 | 45 | 38 | 16 | 0 | 0 | 0 | 0 | 0 | 5 | 26 | 50 |
| Average wind speed, m/s | |||||||||||
| 3 | 3 | 3 | 4 | 3 | 3 | 2 | 2 | 2 | 3 | 3 | 3 |
| Sunny Days | |||||||||||
| 3 | 3 | 5 | 4 | 3 | 3 | 3 | 4 | 4 | 3 | 2 | 2 |
| Cloud Days | |||||||||||
| 12 | 11 | 12 | 10 | 12 | 11 | 11 | 11 | 12 | 12 | 12 | 12 |
| Rainy Days | |||||||||||
| 1 | 1 | 4 | 11 | 14 | 13 | 11 | 12 | 12 | 14 | 8 | 2 |
| Snowy Days | |||||||||||
| 16 | 13 | 11 | 4 | 0 | 0 | 0 | 0 | 0 | 1 | 8 | 15 |
Average Temperature
Here are the average maximum and minimum temperatures in Ottawa during the whole year:
The hottest month in Ottawa is July with average maximum temperature going up to +81°F. The coldest month is January with the lowest temperatures of +7°F.
Humidity
The temperature feels different depending on humidity. Here is how humidity in Ottawa looks throughout the year, in %:
The most humid month in Ottawa is December with average humidity going up to 78%. The least humid month is April with an average humidity of 62%.
Rain
Amount of rainfall in mm. in Ottawa during the whole year based on historical data:
The sunniest and driest month is March with approximately 5 sunny days and a total precipitation of around 28 mm. The rainiest and wettest month is July with approximately 11 rainy days and 91 mm of total precipitation.
Snow
Amount of snow in mm. in Ottawa during the whole year based on historical data:
The snowiest month is December with approximately 15 snowy days.
FAQ
Frequently asked questions about the weather in Ottawa:
What is the hottest month in Ottawa?
The hottest month in Ottawa is July with average maximum temperature of +81°F.
What is the coldest month in Ottawa?
The coldest month in Ottawa is January with minimum temperatures of +7°F.
Is Ottawa worth visiting in winter?
Winter in Ottawa could be a good time to visit, as the weather is generally ok.
When does it rain the least in Ottawa?
if you're looking to visit Ottawa when it rains the least, you should plan your trip for July, June, October. During this time, rainfall is rare with the driest month being February with only 12 mm of rain.
Other cities in Canada
Check out the weather for other cities in Canada.
Monthly weather in Ottawa
Source of the data
For this page, we’ve looked at the typical weather in Ottawa, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.