January in Vang Vieng is the coldest month of the year. In January, the weather in Vang Vieng is typically warm. Average daily high temperature in January is about 24 degrees above zero. On average, Vang Vieng has 17 sunny, 13 partly cloudy, and 1 rainy day in January. The rains are usually light. January as well as February and December is considered the most comfortable time to visit Vang Vieng.