Vancouver vs Seattle

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Seattle edges ahead as the better destination in December. Seattle offers 1 hours of daily sunshine with only 7 rain days, while Vancouver sees 4 sunshine hours and 19 rain days.

Vancouver is on the cooler side at 6°C, requiring warmer clothing. Seattle is also comfortable at 15°C.

For travelers who prioritize dry weather, Seattle is the stronger choice in December. Vancouver receives 3 more hours of sunshine per day, which matters for sightseeing and outdoor activities.

Vancouver reaches an average high of 6°C (43°F) and drops to 2°C (36°F) at night during December. The daily temperature range is 4°C, meaning relatively stable temperatures from day to night.

Seattle averages 15°C (59°F) for the high and 6°C (43°F) for the low, with a daily range of 9°C. There is a notable 9°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.

Vancouver receives approximately 298 mm of rainfall across 19 rain days during December. Rain is frequent, so waterproof gear is essential.

Seattle sees 80 mm over 7 rain days. That makes Seattle the drier option by 12 rain days and 218 mm of total precipitation.

Both cities share similar humidity levels at 65%.