June in Valparaiso is the rainiest and the cloudiest month of the year. In June, the weather in Valparaiso is typically warm. Average daily high temperature in June is about 13 degrees above zero. On average, Valparaiso has 10 sunny, 8 rainy, 8 partly cloudy, and 4 cloudy days in June. The rains are usually heavy. June as well as July, August, and September is considered the most uncomfortable time to visit Valparaiso.