January in Ulan-Ude averages a daily high of -17.6°C with nights around -27.2°C. Expect roughly 5.8 wet days totalling 5.1mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Ulan-Ude is May–August.
Based on ULAN UDE, RS (0.7km), 1995–2024. 25 years of January data.