August in Sanxenxo is the warmest month of the year. In August, the weather in Sanxenxo is typically warm. Average daily high temperature in August is about 22 degrees above zero. On average, Sanxenxo has 15 sunny, 9 partly cloudy, 6 rainy, and 1 cloudy day in August. The rains are usually light. August as well as July is considered the most comfortable time to visit Sanxenxo.