January in Costa Brava is the coldest month of the year. In January, the weather in Costa Brava is typically warm. Average daily high temperature in January is about 12 degrees above zero. On average, Costa Brava has 16 partly cloudy, 13 sunny, and 2 rainy days in January. The rains are usually light. January as well as February, March, November, and December is considered the most uncomfortable time to visit Costa Brava.