December weather forecast in Westport

In December, the weather in Westport is typically cold. Average daily high temperature in December is about 8 degrees above zero. On average, Westport has 19 rainy, 5 partly cloudy, 4 cloudy, and 3 sunny days in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Westport.