January in Isparta is the rainiest, the cloudiest, and the coldest month of the year. In January, the weather in Isparta is typically cold. Average daily high temperature in January is about 4 degrees above zero. On average, Isparta has 10 sunny, 9 rainy, 9 partly cloudy, and 3 cloudy days in January. The rains are usually heavy. January as well as February and December is considered the most uncomfortable time to visit Isparta.