In March, the weather in Coral Harbour is typically freezing. Average daily high temperature in March is about 19 degrees below zero. On average, Coral Harbour has 12 sunny, 8 cloudy, 7 partly cloudy, and 4 snowy days in March. The snowfalls are usually light. March as well as January, February, April, and November is considered the most uncomfortable time to visit Coral Harbour.