July weather forecast in Swansea

July in Swansea is the coldest month of the year. In July, the weather in Swansea is typically warm. Average daily high temperature in July is about 11 degrees above zero. On average, Swansea has 15 partly cloudy, 7 sunny, 7 cloudy, and 2 rainy days in July. The rains are usually moderate. July as well as May, June, August, and September is considered the most uncomfortable time to visit Swansea.