January in Osh is the coldest month of the year. In January, the weather in Osh is typically cold. Average daily high temperature in January is about 4 degrees above zero. On average, Osh has 11 partly cloudy, 9 sunny, 9 cloudy, and 2 rainy days in January. The rains are usually light. January as well as February and December is considered the most uncomfortable time to visit Osh.