January in Phnom Penh is the sunniest month of the year. In January, the weather in Phnom Penh is typically hot. Average daily high temperature in January is about 30 degrees above zero. On average, Phnom Penh has 12 partly cloudy, 11 cloudy, 6 sunny, and 2 rainy days in January. The rains are usually moderate. January as well as {{month_nom: February}}, and {{month_nom: February}} is considered the most comfortable time to visit Phnom Penh.