December in Sector 1 averages a daily high of 4.7°C with nights around -2.7°C. Expect roughly 8.8 wet days totalling 48.1mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Sector 1 is April–May.
Based on BUCURESTI BANEASA, RO (3.9km), 1995–2024. 30 years of December data.