May in Isola 2000 is the rainiest and the cloudiest month of the year. In May, the weather in Isola 2000 is typically warm. Average daily high temperature in May is about 10 degrees above zero. On average, Isola 2000 has 28 rainy and 3 sunny days in May. The rains are usually heavy. May as well as March, April, June, and September is considered the most uncomfortable time to visit Isola 2000.