In August, the weather in Punta-Arenas is typically cold. Average daily high temperature in August is about 4 degrees above zero. On average, Punta-Arenas has 15 rainy, 12 cloudy, 3 sunny, and 1 partly cloudy day in August. The rains are usually moderate. August as well as January, February, March, and April is considered the most uncomfortable time to visit Punta-Arenas.