February in San Sebastian is the windiest month of the year. In February, the weather in San Sebastian is typically cold. Average daily high temperature in February is about 9 degrees above zero. On average, San Sebastian has 19 rainy, 7 sunny, 2 cloudy, and 1 partly cloudy day in February. The rains are usually heavy. February as well as January, March, April, and May is considered the most uncomfortable time to visit San Sebastian.