What are the seasons like in Costa Rica?

High season,  December – April, are the dry months with more sunshine and less rain. In January and February, there is no rain and it is very hot. This is the season when a lot of tourists come to Costa Rica. 

Low season, May-November, are when the rains start gradually pick up. In late September, October, and early November the rains are extremely heavy, sometimes raining non-stop for days at a time. This is the season with very little tourism.