December in Samut Prakan is the coldest month of the year. In December, the weather in Samut Prakan is typically hot. Average daily high temperature in December is about 31 degrees above zero. On average, Samut Prakan has 16 sunny, 10 partly cloudy, 3 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 Samut Prakan.