March in Ocean City is the rainiest month of the year. In March, the weather in Ocean City is typically cold. Average daily high temperature in March is about 9 degrees above zero. On average, Ocean City has 10 sunny, 10 partly cloudy, 9 rainy, and 2 cloudy days in March. The rains are usually moderate. March as well as January, February, and December is considered the most uncomfortable time to visit Ocean City.