In May, the weather in Punta-Arenas is typically cold. Average daily high temperature in May is about 7 degrees above zero. On average, Punta-Arenas has 12 rainy, 8 partly cloudy, 6 sunny, and 5 cloudy days in May. The rains are usually light. May as well as January, February, March, and April is considered the most uncomfortable time to visit Punta-Arenas.