July in Chumikan is the warmest month of the year. In July, the weather in Chumikan is typically warm. Average daily high temperature in July is about 20 degrees above zero. On average, Chumikan has 10 sunny, 10 partly cloudy, 7 rainy, and 4 cloudy days in July. The rains are usually light. July as well as June and August is considered the most comfortable time to visit Chumikan.