May in Sankt Anton am Arlberg is the rainiest month of the year. In May, the weather in Sankt Anton am Arlberg is typically cold. Average daily high temperature in May is about 8 degrees above zero. On average, Sankt Anton am Arlberg has 28 rainy and 3 sunny days in May. The rains are usually heavy. May as well as April, June, July, and September is considered the most uncomfortable time to visit Sankt Anton am Arlberg.