January in Cluj-Napoca is the snowiest and the coldest month of the year. In January, the weather in Cluj-Napoca is typically freezing. Average daily high temperature in January is about zero. On average, Cluj-Napoca has 11 cloudy, 8 partly cloudy, 5 sunny, 4 snowy, and 3 rainy days in January. The snowfalls are usually light. January as well as February, March, April, and May is considered the most uncomfortable time to visit Cluj-Napoca.