April in Ulan-Ude averages a daily high of 10.7°C with nights around -3°C. Expect roughly 3.2 wet days totalling 6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Ulan-Ude is May–August.
Based on ULAN UDE, RS (0.7km), 1995–2024. 24 years of April data.