January in Uliastai is the sunniest and the most freezing month of the year. In January, the weather in Uliastai is typically freezing. Average daily high temperature in January is about 17 degrees below zero. On average, Uliastai has 29 sunny and 2 partly cloudy days in January. January as well as February, June, November, and December is considered the most uncomfortable time to visit Uliastai.