In August, the weather in Puerto Viejo de Sarapiquí is typically hot. Average daily high temperature in August is about 30 degrees above zero. On average, Puerto Viejo de Sarapiquí has 25 rainy, 2 sunny, 2 cloudy, and 2 partly cloudy days in August. The rains are usually heavy. August as well as June, July, September, and October is considered the most uncomfortable time to visit Puerto Viejo de Sarapiquí.