August in Kuujjuarapik is the warmest month of the year. In August, the weather in Kuujjuarapik is typically warm. Average daily high temperature in August is about 12 degrees above zero. On average, Kuujjuarapik has 15 rainy, 8 partly cloudy, 4 sunny, and 4 cloudy days in August. The rains are usually heavy. August as well as January, February, March, and June is considered the most uncomfortable time to visit Kuujjuarapik.