In December, the weather in San Pedro de Ycuamandiyú is typically hot. Average daily high temperature in December is about 32 degrees above zero. On average, San Pedro de Ycuamandiyú has 14 rainy, 8 sunny, 8 partly cloudy, and 1 cloudy day in December. The rains are usually heavy. December as well as January and February is considered the most uncomfortable time to visit San Pedro de Ycuamandiyú.