December in Vancouver averages a daily high of 8.1°C with nights around 1.6°C. Expect roughly 20.3 wet days totalling 157.2mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Vancouver is July–September.
Based on VANCOUVER PEARSON AIRPORT, WA US (2km), 1995–2024. 28 years of December data.