December in Mandalay is the coldest month of the year. In December, the weather in Mandalay is typically hot. Average daily high temperature in December is about 28 degrees above zero. On average, Mandalay has 24 sunny, 5 partly cloudy, and 2 rainy days in December. The rains are usually light. December as well as January is considered the most comfortable time to visit Mandalay.