August in Chignik is the warmest month of the year. In August, the weather in Chignik is typically warm. Average daily high temperature in August is about 13 degrees above zero. On average, Chignik has 20 rainy, 8 cloudy, and 3 sunny days in August. The rains are usually heavy. August as well as April, May, June, and July is considered the most uncomfortable time to visit Chignik.