In May, the weather in Chignik Lagoon is typically cold. Average daily high temperature in May is about 6 degrees above zero. On average, Chignik Lagoon has 21 rainy, 5 sunny, 4 cloudy, and 1 partly cloudy day in May. The rains are usually moderate. May as well as April, June, July, and August is considered the most uncomfortable time to visit Chignik Lagoon.