Month-by-month travel weather
Ottawa December weather
Ottawa, Canada · December
Plan for wind chill and slippery ground
Winter arrives with colder air and snow events. Wind can drop perceived temperature quickly.
December averages at a glance
Average low
around -10 to -7°C
Average high
around -3 to -1°C
Average precipitation
around 50–85 mm
Precip days
about 10–14 days
What to wear in December in Ottawa
Actual feel will change with wind and rain, but use the suggestions below to build a comfortable layered outfit.
- • Puffer/coat + layers
- • Optional gloves/hat
Travel tips for visiting Ottawa in December
- • Snowy days can slow movement—build buffer time.
December weather in Ottawa — FAQ
Q. How cold is December?
A. Cold overall, and wind chill can make it feel colder than the forecast.
Explore Ottawa
These pages are connected so you can compare conditions and decide for yourself.