December in Debre Zeyit is the coldest month of the year. In December, the weather in Debre Zeyit is typically warm. Average daily high temperature in December is about 22 degrees above zero. On average, Debre Zeyit has 23 sunny and 8 partly cloudy days in December. December as well as January, February, March, and September is considered the most comfortable time to visit Debre Zeyit.