January in Ocean City is the coldest month of the year. In January, the weather in Ocean City is typically cold. Average daily high temperature in January is about 5 degrees above zero. On average, Ocean City has 12 partly cloudy, 11 sunny, 7 rainy, and 1 cloudy day in January. The rains are usually heavy. January as well as February, March, and December is considered the most uncomfortable time to visit Ocean City.