The subtropics are the geographical zone of the Earth immediately north and south of the tropical zone, which is bounded by the Tropic of Cancer and the Tropic of Capricorn, at latitudes 23.5°N and 23.5°S. The term "subtropical" describes the climatic region found adjacent to the tropics, usually between 20 and 40 degrees of latitude in both hemispheres. Definitions According to climatologist Glenn G. Trewartha, a subtropical region should have at least eight months with a mean temp… (More on Subtropics)