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 14 degrees above zero. On average, Kuujjuarapik has 21 rainy, 6 cloudy, 3 sunny, and 1 partly cloudy day in August. The rains are usually moderate. August as well as January, February, March, and September is considered the most uncomfortable time to visit Kuujjuarapik.