December in Luangprabang is the coldest month of the year. In December, the weather in Luangprabang is typically warm. Average daily high temperature in December is about 23 degrees above zero. On average, Luangprabang has 17 partly cloudy, 9 sunny, 4 cloudy, and 1 rainy day in December. December as well as January is considered the most comfortable time to visit Luangprabang.