December in Tyumen averages a daily high of -9.1°C with nights around -16.5°C. Expect roughly 13.1 wet days totalling 25.3mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Tyumen is May–August.
Based on TYUMEN AMSG, RS (1.7km), 1995–2024. 24 years of December data.