In April, the weather in Ust-Avam is typically freezing. Average daily high temperature in April is about 9 degrees below zero. On average, Ust-Avam has 23 cloudy, 4 snowy, and 3 sunny days in April. The snowfalls are usually light. April as well as January, February, March, and September is considered the most uncomfortable time to visit Ust-Avam.