January in Denizli is the cloudiest and the coldest month of the year. In January, the weather in Denizli is typically cold. Average daily high temperature in January is about 6 degrees above zero. On average, Denizli has 11 sunny, 10 rainy, 9 partly cloudy, and 1 cloudy day in January. The rains are usually heavy. January as well as February and March is considered the most uncomfortable time to visit Denizli.