May in Sankt Johann in Tirol is the rainiest month of the year. In May, the weather in Sankt Johann in Tirol is typically warm. Average daily high temperature in May is about 17 degrees above zero. On average, Sankt Johann in Tirol has 21 rainy, 7 sunny, 2 partly cloudy, and 1 cloudy day in May. The rains are usually heavy. May as well as January, February, March, and April is considered the most uncomfortable time to visit Sankt Johann in Tirol.