January in Pedro Juan Caballero is the rainiest and the hottest month of the year. In January, the weather in Pedro Juan Caballero is typically hot. Average daily high temperature in January is about 29 degrees above zero. On average, Pedro Juan Caballero has 23 rainy and 8 sunny days in January. The rains are usually heavy. January as well as February, March, and December is considered the most uncomfortable time to visit Pedro Juan Caballero.