May weather forecast in Saint John's

In May, the weather in Saint John's is typically cold. Average daily high temperature in May is about 7 degrees above zero. On average, Saint John's has 12 rainy, 8 cloudy, 6 partly cloudy, and 5 sunny days in May. The rains are usually heavy. May as well as March, April, June, and October is considered the most uncomfortable time to visit Saint John's.