May weather forecast in Birr

May in Birr is the rainiest month of the year. In May, the weather in Birr is typically warm. Average daily high temperature in May is about 15 degrees above zero. On average, Birr has 15 rainy, 10 partly cloudy, 3 sunny, and 3 cloudy days in May. The rains are usually moderate. May as well as January, February, March, and April is considered the most uncomfortable time to visit Birr.