January in Caaguazu is the rainiest and the hottest month of the year. In January, the weather in Caaguazu is typically hot. Average daily high temperature in January is about 30 degrees above zero. On average, Caaguazu has 18 rainy, 12 sunny, and 1 partly cloudy day in January. The rains are usually heavy. January as well as February and December is considered the most uncomfortable time to visit Caaguazu.