December in Bonito is the rainiest month of the year. In December, the weather in Bonito is typically hot. Average daily high temperature in December is about 27 degrees above zero. On average, Bonito has 12 rainy, 11 cloudy, 5 partly cloudy, and 3 sunny days in December. The rains are usually heavy. December as well as January, February, and April is considered the most uncomfortable time to visit Bonito.