January in The Sunny Beach is the rainiest and the coldest month of the year. In January, the weather in The Sunny Beach is typically cold. Average daily high temperature in January is about 5 degrees above zero. On average, The Sunny Beach has 9 rainy, 8 sunny, 8 partly cloudy, and 6 cloudy days in January. The rains are usually moderate. January as well as February, March, and December is considered the most uncomfortable time to visit The Sunny Beach.