December in Surrey averages a daily high of 6.1°C with nights around 1.1°C. Expect roughly 19.3 wet days totalling 199.7mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Surrey is July–September.
Based on CLOVERDALE EAST, BC CA (9.2km), 1995–2024. 18 years of December data.