March in Zonguldak is the rainiest month of the year. In March, the weather in Zonguldak is typically cold. Average daily high temperature in March is about 9 degrees above zero. On average, Zonguldak has 13 rainy, 8 partly cloudy, 6 sunny, and 4 cloudy days in March. The rains are usually heavy. March as well as January, February, and December is considered the most uncomfortable time to visit Zonguldak.