June in Umuarama is the coldest month of the year. In June, the weather in Umuarama is typically warm. Average daily high temperature in June is about 23 degrees above zero. On average, Umuarama has 14 sunny, 8 rainy, 7 partly cloudy, and 1 cloudy day in June. The rains are usually heavy. June as well as July and August is considered the most comfortable time to visit Umuarama.