Weather in Montreal in December

December in Montreal is deep winter. Days are short. The outdoor plan is a window in the middle of the day or not at all.

In Canada, this is how Montreal actually wears December, not how a country centroid would. Compared with July and January, December sits in the middle of Montreal's year.

Montreal
Average temp
-5°C

-9–-1°C

Rainfall
78 mm

Showers likely

Sunshine
2.6 h

hours per day

What to expect

Daytime

Days in Montreal in December are about getting between indoor places. The cold is the story. Gloves are not a fashion choice.

A clear spell is for a short walk, then back in. Do not plan a long outdoor day as the default. Night falls early and the cold deepens with it.

Rain

Mixed skies in Montreal in December. Dry days and wet days share the month. Outdoor plans need a backup, not a cancellation policy.

Pack a shell you will actually carry. The monthly table is the place for totals. This is the feel: usable, interrupted.

Evening

Evenings are cooler. A layer helps after sunset.

What to pack

  • Rain jacket

  • A layer for cooler evenings

Where to stay in Montreal

Dates are a starting point for December.

All hotels in Montreal

Travel guides for Montreal

What to read before you book.

All travel guides in Montreal

Average weather in Montreal

TemperatureRainfall

Source: MeteostatPeriod: 1991-2020Checked: 28 Aug 2026265 places covered

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FAQs about Montreal

Climate averages for Montreal, 1991–2020.

The best time to visit Montreal is between May and October, the most comfortable stretch of the year on these averages.

July is the hottest month, with an average around 21°C.

July is the wettest month, with about 105 mm of rain.

No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.