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During December, Montréal experiences very low daytime temperatures of 0°C (32°F) and cooler nights around -8°C (18°F). As part of the winter season, expect quite a bit of snow/rainfall. Around 92 mm (3.6 in) is typical.
Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August and September typically offer the best weather for Montréal.
Pick a month to see the average temperature, rainfall and sunshine in Montréal - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Montréal typically drop from around 1°C (34°F) at the start of December to approximately -4°C (25°F) by the end. Nights are very cold, with lows typically ranging from -12°C (10°F) to -4°C (25°F).
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Montréal spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Montréal.
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in December →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Dress warmly and in layers for your trip to Montréal in December. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Expect heavy rainfall, so bring good rain protection and waterproof bags. The water temperature sits at about 11°C (52°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. You can probably leave your sunglasses at home, because sunny days are pretty rare this month.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Montréal climate overview or explore weather in Canada.
Where to go in December - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
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