This climate is characterized by:

* High temperatures year-round: Average temperatures are above 18°C (64°F) even in the coldest month.

* High rainfall: Typically receives over 60 inches (150 cm) of rain per year.

* High humidity: Due to the consistent rainfall and warm temperatures.

These conditions are found primarily in areas near the equator, including large swaths of:

* South America: Amazon rainforest

* Africa: Congo Basin

* Southeast Asia: Indonesian islands

* Central America: Parts of Mexico and the Caribbean

While other climate types cover significant portions of the Earth's surface, the vast expanse of tropical humid climates makes it the most abundant.