Introduction
Within the Köppen Climate Classification System,
tropical moist climates extend northward
and southward
from the equator to
about 15 to 25° of latitude.
In these climates,
all months have average temperatures greater than 18° Celsius (64° Fahrenheit).
Annual precipitation is often greater than 1500 mm (59 in.).
See link for high reslution Köppen Climate Map
to see the spatial distribution of
the A climate type.
Three minor Köppen climate types exist in the A group.
These three categories of tropical moist climate are distinguished
on the seasonal distribution of rainfall.