April in Galway is the sunniest month of the year. In April, the weather in Galway is typically warm. Average daily high temperature in April is about 11 degrees above zero. On average, Galway has 16 rainy, 7 cloudy, 5 sunny, and 2 partly cloudy days in April. The rains are usually moderate. April as well as January, February, March, and May is considered the most uncomfortable time to visit Galway.