May in Puerto Viejo de Sarapiquí is the cloudiest month of the year. In May, the weather in Puerto Viejo de Sarapiquí is typically hot. Average daily high temperature in May is about 28 degrees above zero. On average, Puerto Viejo de Sarapiquí has 27 rainy, 2 cloudy, and 2 partly cloudy days in May. The rains are usually heavy. May as well as January, April, June, and July is considered the most uncomfortable time to visit Puerto Viejo de Sarapiquí.