September in Ballyvaughan is the cloudiest month of the year. In September, the weather in Ballyvaughan is typically warm. Average daily high temperature in September is about 15 degrees above zero. On average, Ballyvaughan has 24 rainy, 3 cloudy, 2 sunny, and 1 partly cloudy day in September. The rains are usually heavy. September as well as January, February, March, and April is considered the most uncomfortable time to visit Ballyvaughan.