Worldwide zones of Tropical rainforest climate (Af).
A tropical rainforest climate is a tropical climate usually found within 10 to 15 degrees latitude of the equator, and has at least 50 mm (2 inches) of rainfall every month of the year. Regions with this climate are typically designated Af by the Köppen climate classification. A tropical rainforest climate is typically hot, very humid and wet.
Tropical rain forests have a type of tropical climate in which there is no dry season—all months have an average precipitation value of at least 60 mm (2.4 in). In rainforest climates the dry season is very short, and rainfall is normally heavy throughout the year. One day in a tropical rainforest climate can be very similar to the next, while the change in temperature between day and night may be larger than the average change in temperature during the year. 
When tropical rain forest climates are more dominated by the ITCZ than the trade winds (and with no or rare cyclones), so usually located near the equator, they are also called equatorial climates. Otherwise, when they are more dominated by the trade winds than the ITCZ, they are called tropical trade-wind climates. In the last case there are a number of instances where this climate is found some distance away from the equator. For instance, Santos, Brazil and Fort Lauderdale, Florida are not only far removed from the equator, but are actually located just outside the tropics. Both cities feature a tropical trade-wind rainforest climate, with noticeably cooler and warmer periods of the year.
Notable cities with tropical rain forest climates