In December, the weather in Kayseri is typically cold. Average daily high temperature in December is about 6 degrees above zero. On average, Kayseri has 12 sunny, 9 partly cloudy, 5 rainy, 4 cloudy, and 1 snowy day in December. The rains are usually light. December as well as January, February, March, and April is considered the most uncomfortable time to visit Kayseri.