February in Biarritz is the windiest month of the year. In February, the weather in Biarritz is typically warm. Average daily high temperature in February is about 10 degrees above zero. On average, Biarritz has 15 rainy, 8 sunny, and 6 partly cloudy days in February. The rains are usually heavy. February as well as January, March, November, and December is considered the most uncomfortable time to visit Biarritz.