May in Humpolec is the rainiest month of the year. In May, the weather in Humpolec is typically warm. Average daily high temperature in May is about 15 degrees above zero. On average, Humpolec has 22 rainy, 8 sunny, and 1 partly cloudy day in May. The rains are usually heavy. May as well as February, March, April, and June is considered the most uncomfortable time to visit Humpolec.