December in Ussuriysk averages a daily high of -6.6°C with nights around -20°C. Expect roughly 4.3 wet days totalling 14.5mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Ussuriysk is June–September.
Based on TIMIRYAZEVSKIJ, RS (8.8km), 1995–2024. 25 years of December data.