June in Medellin is the warmest month of the year. In June, the weather in Medellin is typically warm. Average daily high temperature in June is about 23 degrees above zero. On average, Medellin has 25 rainy and 5 cloudy days in June. The rains are usually heavy. June as well as January, February, March, and April is considered the most uncomfortable time to visit Medellin.