January in Saint-Marc is the sunniest and the coldest month of the year. In January, the weather in Saint-Marc is typically hot. Average daily high temperature in January is about 27 degrees above zero. On average, Saint-Marc has 21 sunny, 8 partly cloudy, and 2 rainy days in January. The rains are usually light. January as well as February and December is considered the most comfortable time to visit Saint-Marc.