Costa Rica enjoys two principal climatic seasons: the "High" (dry) Season, and the "Green" (rainy) Season. However, what makes Costa Rican weather so different from other Central American countries are the prevaling microclimates. Primarily due to the wide variations in altitude, these unique systems make Costa Rican weather extremely diverse, and very difficult to predict. Though generally classified as a tropical country because of its close proximity to the equator, Costa Rica has no real winter period, and the sun shines here throughout the year. Even during Rainy seasons, there are typically sunny periods during almost every day, except in specific microclimates like Monteverde Cloud Forest and the Arenal Volcano which can be under cloud cover for extended periods of time. Generally speaking, temperatures range from 70 - 85 degrees farenheit, with higher humidity on the coasts. Inland locations, especially at higher altitudes, tend to be considerably cooler and may be less humid. Rainfall varies dramatically according to topography, but the heaviest rains are typically in September and October, and can last from a few minutes to a couple of hours at a time.