May in Bridgewater is the rainiest month of the year. In May, the weather in Bridgewater is typically warm. Average daily high temperature in May is about 13 degrees above zero. On average, Bridgewater has 15 rainy, 9 cloudy, 5 sunny, and 2 partly cloudy days in May. The rains are usually heavy. May as well as March, April, November, and December is considered the most uncomfortable time to visit Bridgewater.