December in Sarpsborg averages a daily high of 2°C with nights around -2.8°C. Expect roughly 14.7 wet days totalling 84.8mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Sarpsborg is June–August.
Based on SARPSBORG, NO (0.3km), 1995–2024. 27 years of December data.