Generally, the dry season, considered summer by Costa Ricans, is from mid-November to April. The rainy season(or “green season”) is from May to mid-November in most of the country, with notable exceptions on the Caribbean coast. Costa Ricans call this wet time of year their “winter”. So what does this exactly mean? Basically, if you want clear summer skies you might want to consider the dry season. However be ready for a lot of heat; up to 95°F (35°C), and probably some (or a lot) of dusty roads… along with dry brownish flora along the coastline and mountain ranges.
But it’s not all dull… most floral trees in Costa Rica blossom during the dry season, providing a multi colored spectacle of magical trees. The dry season is also high season in Costa Rica, as many vacationers (local and International) doze off to the coast to enjoy the marvelous beaches and sunny skies that the country has to offer. This might mean higher prices in hospitality and in some tours.