December in Delta averages a daily high of 7°C with nights around 2.5°C. Expect roughly 19.2 wet days totalling 140.2mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Delta is June–August.
Based on DELTA TSAWWASSEN BEACH, BC CA (8.7km), 1995–2024. 29 years of December data.