January in Ulan-Ude is the most freezing month of the year. In January, the weather in Ulan-Ude is typically freezing. Average daily high temperature in January is about 17 degrees below zero. On average, Ulan-Ude has 16 cloudy, 9 partly cloudy, 5 sunny, and 1 snowy day in January. The snowfalls are usually light. January as well as February and December is considered the most uncomfortable time to visit Ulan-Ude.