Boston vs Montreal

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Boston edges ahead as the better destination in December. Boston offers 6 hours of daily sunshine with only 11 rain days, while Montreal sees 5 sunshine hours and 12 rain days.

Boston is on the cooler side at 5°C, requiring warmer clothing. Montreal is cooler at -1°C.

For travelers who prioritize dry weather, Boston is the stronger choice in December. Boston receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.

Boston reaches an average high of 5°C (41°F) and drops to -2°C (28°F) at night during December. The daily temperature range is 7°C, meaning relatively stable temperatures from day to night.

Montreal averages -1°C (30°F) for the high and -8°C (18°F) for the low, with a daily range of 7°C. There is a notable 6°C gap between the two cities, so expect a very different feel.

Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in December.

Boston receives approximately 116 mm of rainfall across 11 rain days during December. You can expect rain roughly every other day.

Montreal sees 85 mm over 12 rain days. That makes Boston the drier option by 1 rain day and 31 mm of total precipitation.

Both cities share similar humidity levels at 65%.