In April, the weather in Ust-Unya is typically cold. Average daily high temperature in April is about 2 degrees above zero. On average, Ust-Unya has 21 rainy, 7 snowy, and 2 cloudy days in April. The rains are usually heavy. April as well as January, February, September, and October is considered the most uncomfortable time to visit Ust-Unya.