November in Swansea is the cloudiest month of the year. In November, the weather in Swansea is typically warm. Average daily high temperature in November is about 18 degrees above zero. On average, Swansea has 12 rainy, 9 partly cloudy, 6 sunny, and 3 cloudy days in November. The rains are usually heavy. November as well as May, June, July, and August is considered the most uncomfortable time to visit Swansea.