June in Saint-Marc is the rainiest, the windiest, and the cloudiest month of the year. In June, the weather in Saint-Marc is typically hot. Average daily high temperature in June is about 31 degrees above zero. On average, Saint-Marc has 25 rainy, 4 sunny, and 1 cloudy day in June. The rains are usually heavy. June as well as May, July, August, and September is considered the most uncomfortable time to visit Saint-Marc.