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An area of tropical monsoon climate is a tropical climate sub-type that corresponds to the Köppen climate classification category Am. Tropical monsoon climates have monthly mean temperatures above 18 °C in every month of the year and a dry season. Tropical monsoon climates is the intermediate climate between the wet Af and the drier Aw.
A tropical monsoon climate's driest month has on average less than 60 mm, but more than 100 − 25 ] {\textstyle 100-\left}{25}}\right]}. This is in direct contrast to a tropical savanna climate, whose driest month has less than 60 mm of precipitation and also less than 100 − 25 ] {\textstyle 100-\left}{25}}\right]} of average monthly precipitation. In essence, a tropical monsoon climate tends to either have more rainfall than a tropical savanna climate or have less pronounced dry seasons. A tropical monsoon climate tends to vary less in temperature during a year than does a tropical savanna climate. This climate has a driest month which nearly always occurs at or soon after the winter solstice.