In June, the weather in Jachymov is typically warm. Average daily high temperature in June is about 17 degrees above zero. On average, Jachymov has 19 rainy, 7 sunny, 2 cloudy, and 2 partly cloudy days in June. The rains are usually heavy. June as well as February, March, April, and May is considered the most uncomfortable time to visit Jachymov.