Ottawa Weather in December
-2.3°C high · -10.6°C low · 77 mm rain · 1.8h sun
Dec is a cool month in Ottawa — not peak season, but a good time to avoid crowds.
December at a glance
| Metric | Value |
|---|---|
| Average high | -2.3°C |
| Average low | -10.6°C |
| Rainfall | 77 mm |
| Sunshine | 1.8 hours/day |
| Daylight | 8.5 hours |
What to pack in December
Pack a warm coat and layers for Ottawa in December.
Ottawa weather by month
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Frequently asked questions
What is the weather in Ottawa in December?
Highs of -2.3°C and lows of -10.6°C, with about 77 mm of rain and 1.8 hours of sunshine per day.
Is December a good time to visit Ottawa?
Dec is a cool month in Ottawa — not peak season, but a good time to avoid crowds.
What to do in Ottawa · Best time to visit Ottawa
Climate data: Open-Meteo Historical (ERA5), 1991–2020. CC BY 4.0.