Costa Rica's climate is subequatorial. Heavily rugged terrain creates a great variety of climatic conditions. On the Caribbean coast and on the eastern slopes of the mountains fall heavy rainfall (in places up to 3000 mm per year), brought by northeastern trade winds. Most of the year there is hot, rainy weather. In the lowlands, the average temperature in January - 23 ° C, July - 25 ° C. On the Pacific coast and on the western slopes of the mountains the climate is less humid. The dry winter season lasts there for four months a year.