Flexi Says: The driest climates are deserts. Most occur between about 15° and 30° latitude. This is where dry air sinks to the surface in the global circulation cells. Deserts receive less than 25 centimeters (10 inches) of rain per year. They may be covered with sand dunes or be home to sparse but hardy plants. With few clouds, many deserts have hot days and cool nights. Dry climates receive very little rainfall. They also have high rates of evaporation. This makes them even drier.
