February in Colwyn Bay is the cloudiest and the coldest month of the year. In February, the weather in Colwyn Bay is typically cold. Average daily high temperature in February is about 6 degrees above zero. On average, Colwyn Bay has 23 rainy, 4 cloudy, and 2 sunny days in February. The rains are usually moderate. February as well as January, March, April, and May is considered the most uncomfortable time to visit Colwyn Bay.