September in Burwell is the sunniest month of the year. In September, the weather in Burwell is typically warm. Average daily high temperature in September is about 26 degrees above zero. On average, Burwell has 19 sunny, 6 rainy, and 5 partly cloudy days in September. The rains are usually heavy. September as well as {{month_nom: February}}, and {{month_nom: February}} is considered the most comfortable time to visit Burwell.