The climate zone typically referred to as "tropical" is characterized by warm temperatures and high humidity throughout the year. Tropical climates are primarily found near the equator, within the Tropics, where the sun’s rays are most direct. These regions experience minimal temperature variation, with average monthly temperatures usually above 18°C (64°F). Rainfall patterns can vary, leading to tropical rainforest climates with heavy precipitation, or tropical savanna climates featuring distinct wet and dry seasons. The biodiversity in tropical regions is remarkable, with lush vegetation and an abundance of wildlife, making these areas critical ecosystems for the planet.