In March, the weather in Weston-super-Mare is typically warm. Average daily high temperature in March is about 10 degrees above zero. On average, Weston-super-Mare has 12 rainy, 10 partly cloudy, 6 cloudy, and 3 sunny days in March. The rains are usually moderate. March as well as January, February, April, and May is considered the most uncomfortable time to visit Weston-super-Mare.