May in San Zeno di Montagna is the rainiest month of the year. In May, the weather in San Zeno di Montagna is typically warm. Average daily high temperature in May is about 16 degrees above zero. On average, San Zeno di Montagna has 23 rainy, 7 sunny, and 1 partly 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 San Zeno di Montagna.