The Climate of the Usambaras differs from much of the rest of Tanzania. Rain can and does fall at any time of the year although there is a seasonal pattern. Tanzania has a hot, dry season in December-March, and a cooler, dry season in May to October. The 'short' rains occur in November and 'long' rains in April-May. The climate on the coast can be hot and humid, however, because of the altitude (800-1400m), the Usambaras are cooler and wetter than the surrounding lowland. The rainfall averages over 1,500mm a year with an average temperature of 20C.