In Costa Rica you can enjoy one of best year round climates in the world. (72 degrees average in the Central Valley).” This means that one can live comfortably with no air conditioning and no heating. The locals consider it living in “eternal spring.”
Go up the mountain to finds a cooler temperature of around 70ºF/21ºC or move toward the beach for a warmer temperature with an average day temperature of 86ºF/30ºC for the Caribbean beaches. The Pacific coast is even a little warmer and has less humidity; so many people feel it is more comfortable.
The rainy season in Costa Rica goes from May to November, and the dry season from December to April. However, even during the green season, the mornings are likely to be bright and sunny. Temperatures vary little between seasons.