January in Puerto Viejo de Sarapiquí is the coldest month of the year. In January, the weather in Puerto Viejo de Sarapiquí is typically warm. Average daily high temperature in January is about 25 degrees above zero. On average, Puerto Viejo de Sarapiquí has 22 rainy, 5 partly cloudy, and 4 sunny days in January. The rains are usually heavy. January as well as April, May, June, and July is considered the most uncomfortable time to visit Puerto Viejo de Sarapiquí.