In August, the weather in Ny-Alesund is typically cold. Average daily high temperature in August is about 3 degrees above zero. On average, Ny-Alesund has 16 cloudy, 14 rainy, and 1 sunny day in August. The rains are usually moderate. August as well as March, June, July, and September is considered the most uncomfortable time to visit Ny-Alesund.