Climate & Climate Types. Tropical Humid Climates. Tropical climates are characterized by constant high temperature (at sea level and low elevations) — all twelve months of the year have average temperatures of 18 °C (64 °F) or higher. They are subdivided as follows:.
If the annual precipitation is less than the threshold but more than half the threshold, it is classified as BS (steppe climate). If it's more than the threshold, the area does not have a Group B climate.
If the annual precipitation is less than half the threshold for Group B, it is classified as BW (desert climate)
Continental Subarctic climates with extremely severe winters (Dfd, Dwd): These climates occur only in eastern Siberia. The names of some of the places that have this climate — most notably Verkhoyansk and Oymyakon — have become veritable synonyms for extreme, severe winter cold