January in Somerset West is the windiest and the sunniest month of the year. In January, the weather in Somerset West is typically warm. Average daily high temperature in January is about 24 degrees above zero. On average, Somerset West has 29 sunny, 1 rainy, and 1 partly cloudy day in January. The rains are usually light. January as well as February, March, April, and December is considered the most comfortable time to visit Somerset West.