July in Kilkenny is the rainiest and the warmest month of the year. In July, the weather in Kilkenny is typically warm. Average daily high temperature in July is about 17 degrees above zero. On average, Kilkenny has 28 rainy and 3 sunny days in July. The rains are usually heavy. July as well as January, February, March, and April is considered the most uncomfortable time to visit Kilkenny.