April in Kilkenny is the sunniest month of the year. In April, the weather in Kilkenny is typically warm. Average daily high temperature in April is about 11 degrees above zero. On average, Kilkenny has 15 rainy, 8 cloudy, 5 sunny, and 2 partly cloudy days in April. The rains are usually light. April as well as January, February, March, and May is considered the most uncomfortable time to visit Kilkenny.