Climate in Ottawa (Ontario), Canada

The graphs below show the monthly weather averages over the year.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Average monthly minimum and maximum temperature in Ottawa, Canada

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Monthly hours of sunshine

The average monthly total hours of sunshine over the year

Average monthly hours of sunshine in Ottawa, Canada

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Daily percent of sunshine

The mean percent of hours of sunhours during the day over the year

Average monthly percentage of sunshine in Ottawa, Canada

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Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Average monthly rainfall, snow, precipitation in Ottawa, Canada

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Monthly rainy days

The average number of days each month with rain, snow, hail etc.

Average monthly rainy days in Ottawa, Canada

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Average humidity

The mean monthly relative humidity over the year

Average monthly relative humidity in Ottawa, Canada

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Weather Forecasts for Ottawa

Fri   Mar 29
7°C | -1°C
NW 22 km/h
broken clouds and no rain

broken clouds and no rain

Sat   Mar 30
8°C | -2°C
NW 18 km/h
almost clear and no rain

almost clear and no rain

Sun   Mar 31
9°C | -1°C
W 18 km/h
1.7 mm
partly cloudy and  chance of slight rain

partly cloudy and chance of slight rain

The best time of year to visit Ottawa in Canada

During the months of May, June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

  • When is winter in Ottawa?
    The coldest season / winter is in the following months: January, February and December.
  • Which is the warmest month in Ottawa?
    July has an average maximum temperature of 27°C and is the warmest month of the year.
  • Which is the coldest month in Ottawa?
    The coldest month is January with an average maximum temperature of -4°C.
  • Which is the wettest month in Ottawa?
    June tops the wettest month list with 105 mm of rainfall.
  • Which is the driest month in Ottawa?
    February is the driest month with 69 mm of precipitation.
  • Which is the sunniest month in Ottawa?
    July is the sunniest month with an average of 280 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.