In October, the weather in Blanc-Sablon is typically cold. Average daily high temperature in October is about 7 degrees above zero. On average, Blanc-Sablon has 12 rainy, 9 partly cloudy, 6 sunny, and 4 cloudy days in October. The rains are usually heavy. October as well as January, February, April, and May is considered the most uncomfortable time to visit Blanc-Sablon.