In November, the weather in Sillamjae is typically cold. Average daily high temperature in November is about 3 degrees above zero. On average, Sillamjae has 14 rainy, 10 cloudy, 3 partly cloudy, 2 sunny, and 1 snowy day in November. The rains are usually heavy. November as well as September, October, and December is considered the most uncomfortable time to visit Sillamjae.