March in Quepos is the warmest month of the year. In March, the weather in Quepos is typically warm. Average daily high temperature in March is about 27 degrees above zero. On average, Quepos has 27 rainy, 3 sunny, and 1 partly cloudy day in March. The rains are usually heavy. March as well as January, February, April, and May is considered the most uncomfortable time to visit Quepos.