In December, the weather in Platja de Aro is typically warm. Average daily high temperature in December is about 13 degrees above zero. On average, Platja de Aro has 13 sunny, 10 partly cloudy, 7 rainy, and 1 cloudy day in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Platja de Aro.