December in Wiang is the coldest month of the year. In December, the weather in Wiang is typically warm. Average daily high temperature in December is about 23 degrees above zero. On average, Wiang has 16 partly cloudy, 12 sunny, 2 cloudy, and 1 rainy day in December. The rains are usually light. December as well as January is considered the most comfortable time to visit Wiang.