Ottawa Weather in December

What's the weather like in Ottawa, Canada in December 2018?

The climate in Ottawa during December can be summarized as cold and a little damp.

December is in the winter in Ottawa and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a freezing -4°C (25°F), whilst at night -11°C (12°F) is normal.

Ottawa weather averages (imperial / metric)
Daytime temperature -3.7°C 25.4°F
Nightly temperature -11.4°C 11.6°F
Average temperature -7.5°C 18.5°F
Daily sunshine 2.8 hrs
Avg rainfall 82 mm 3.2 ins
Rainy days 16 days
Sea temperature 5.1°C 41.1°F
Humidity 78%
Windspeed 13.7kph 9 mph

On average December is the 5th wettest month of the year in Ottawa with around 82mm 3.2 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.

On the flip side this corresponds to an average of 2.8 hours of sunshine per day.

December temperatures in Ottawa

December rainfall

December hourly sunshine

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in December 2018.

Other monthly averages

Ottawa weather stats

Ottawa weather statistics
Hottest month: July 25.9°C 78.6°F
Driest month: February 58mm 2.3ins
Sunniest month: July 9.7hrs
Coldest month: January -6.6°C 20.1°F
Wettest month: July 88mm 3.5ins
Map showing location of Ottawa (45.41117, -75.69812)

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