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