Verdict: Tough month
Montréal Weather in December
December is deep-winter territory in Montréal — daily highs around 1°C (34°F) and lows near -6°C (21°F). Expect showers on roughly 13 days of the month — rarely trip-ruining, worth planning around. If your dates are flexible, most travelers will have a better time in Montréal outside December.
Average high
1°C / 34°F
Average low
-6°C / 21°F
Rain days
~13
Precipitation
94 mm
What to pack for Montréal in December
- Full winter kit — insulated coat, gloves, warm hat
- Rain gear is non-negotiable — expect rain on roughly 13 days
- Comfortable walking shoes — every guide on this site assumes you'll use them
December against the rest of the year
Warmest in Montréal: Jul (27°C / 81°F) · Coolest: Jan (-4°C / 25°F) · Wettest: Aug (~14 rain days)
-4°
-12°
Jan
-2°
-12°
Feb
4°
-5°
Mar
12°
1°
Apr
20°
9°
May
25°
15°
Jun
27°
18°
Jul
25°
17°
Aug
21°
13°
Sep
15°
7°
Oct
7°
0°
Nov
1°
-6°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)