Montreal Weather in December
Canada · Humid Continental climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
December in Montreal sees average temperatures ranging from a low of -5.9°C (21.4°F) to a high of 0.5°C (32.9°F), with a mean of -2.6°C (27.3°F). Compared to the annual average of 8.1°C (46.6°F), this month is 10.7°C cooler than the yearly norm. Precipitation averages 94.3mm, making it approximately 1.0mm drier than the monthly average of 95.0mm. The city receives an average of 4.0 hours of sunshine per day during December, with relative humidity averaging 76.3%. Wind speeds reach an average maximum of 19.9 km/h. Snowfall averages 27.0cm during December, which can affect travel plans and outdoor activities. For travelers, this month offers a temperature experience in Montreal, with drier-than-average conditions compared to the rest of the year.
Montreal's climate offers four distinct seasons with dramatic temperature swings. I visited during the summer festival season and found the city alive with outdoor energy. The data shows that the best time to visit is May to September, when temperatures are warm and the city's famous festivals are in full swing. The winters are cold and snowy, but the city's underground city and indoor culture provide warm alternatives.
December vs Adjacent Months
| Metric | November | December | January |
|---|---|---|---|
| Mean Temp | 3.7°C (38.7°F) | -2.6°C (27.3°F) | -7.7°C (18.1°F) |
| Rainfall | 70.0mm | 94.3mm | 77.5mm |
| Sunshine | 5.7 hrs | 4.0 hrs | 4.7 hrs |
| Humidity | 73.3% | 76.3% | 79.9% |
| Wind | 20.2 km/h | 19.9 km/h | 18.2 km/h |
| Rainy Days | 12.6 | 9.2 | 4.2 |
| Snowfall | 8.8 cm | 27.0 cm | 41.6 cm |
Seasonal Context
December falls in Winter in the Northern Hemisphere. Winter is the coolest season with the shortest daylight hours. For travelers visiting Montreal in December, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Montreal in December?
The average temperature in Montreal during December ranges from -5.9°C (21.4°F) to 0.5°C (32.9°F), with a mean of -2.6°C (27.3°F).
How much does it rain in Montreal in December?
Montreal receives an average of 94.3mm of precipitation in December, spread across approximately 9.2 rainy days.
What should I pack for Montreal in December?
Based on December weather data, pack heavy winter clothing, thermal layers, and a warm coat.
Is December a good time to visit Montreal?
December is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Montreal
Cities with Similar December Climate (Humid Continental)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 45.5°, -73.57°. Timezone: America/Montreal. Last updated: 2026-07-30.