Ottawa Weather in December

In Ottawa, December brings low daytime temperatures around 6°C (43°F), with nights cooling to -5°C (23°F). Some snow/rainfall is to be expected.

Rainfall in Ottawa in December

Analyzing past climate data, one can expect approximately 7 days of snow/rain, averaging 54 mm (2.1 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Ottawa in December

In December, Ottawa gets low temperatures, with highs of 6°C (43°F). Nights cool to around -5°C (23°F). During December, you'll experience the winter season. It stays cool throughout the day, so warm layers are a good idea from morning to evening. At -5°C (23°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating.

Sunshine in Ottawa in December

The month brings about 151 hours of sunlight, offering a comfortable mix of sun and overcast.

December in Ottawa can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.

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• January
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For a detailed overview over the year and the best time to visit the United States of America, check out our Ottawa's climate page.

Ottawa Temperature in December

Min Temperature -5°C (23°F)  

Max Temperature 6°C (43°F)  

Chance of Rain 25%  

Precipitation 54 mm (2.1 in)  

Rainy days 7 days  

Humidity 72% *  

Sunshine 151 hours *  

Percentage Sunshine 51% *  

* Data from: Topeka, the United States of America (59 KM, 37 Miles).

What to Wear in Ottawa in December

We recommend to layer up for chilly conditions in Ottawa in December. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. Rain is likely on several days, so bring a good rain jacket. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Ottawa in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

4/10

Walking

4/10

Camping

1/10

Outdoor sports

4/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Ottawa's climate page.

More climate data for Ottawa

Temperature Rainfall Sunshine Humidity

See the full Ottawa climate overview or explore weather in the United States of America.