Weather and Seasons
Costa Rica boasts one of the world’s most favorable climates. However, you won’t encounter the traditional four seasons of its neighbors to the north and south because of its geographic location close to the equator(approximately 10 degrees north). Instead, there are two official seasons – the green season and the dry season (a.k.a. winter and summer).
The green season, which runs from December to May on the Pacific Coast and inland, is characterized by bright sunny mornings and rainy afternoons and evenings. In the southern zone and Caribbean side of the country, the rains are heavier and more frequent – hence the vast cloud and rainforests blanketing the mountains and coastal areas.
The Caribbean region experiences different degrees of rain nearly year-round. September and October are the driest months when the area is absolutely radiant. January and February also have a letup in the heavy rains and are great months for surfing as the Atlantic swells are at their peak.
Because of the country’s dramatically diverse topography you’ll also encounter several different microclimates as you travel. Ecologically speaking, there are at least 12 distinct life zones and 11 transition zones that vary significantly depending on factors like humidity, rainfall, and temperature. In layman terms – you may find dramatic differences in climate and environment from one valley or region to another or with change in elevation. Just another reason why Costa Rica is so fascinating!