In December, the weather in Puerto Viejo de Sarapiquí is typically warm. Average daily high temperature in December is about 26 degrees above zero. On average, Puerto Viejo de Sarapiquí has 26 rainy, 2 sunny, 2 partly cloudy, and 1 cloudy day in December. The rains are usually heavy. December as well as January, April, May, and June is considered the most uncomfortable time to visit Puerto Viejo de Sarapiquí.