The Köppen system recognizes five major climate types based on the annual and monthly averages of [[temperature]] and [[precipitation]]. Each type is designated by a capital letter.
*A - [[Moist Tropical Climate]]s are known for their high temperatures year round and for their large amount of year -round [[rain]].
*B - [[Dry Climate]]s are characterized by little rain and a huge daily temperature range. Two subgroups:
**S - Semiarid or [[steppe]],