In April, the weather in Zhytomyr is typically warm. Average daily high temperature in April is about 13 degrees above zero. On average, Zhytomyr has 10 rainy, 8 sunny, 7 partly cloudy, and 5 cloudy days in April. The rains are usually moderate. April as well as January, February, March, and October is considered the most uncomfortable time to visit Zhytomyr.