November in Biarritz is the rainiest month of the year. In November, the weather in Biarritz is typically warm. Average daily high temperature in November is about 14 degrees above zero. On average, Biarritz has 19 rainy, 8 sunny, and 3 partly cloudy days in November. The rains are usually heavy. November as well as January, February, March, and December is considered the most uncomfortable time to visit Biarritz.