The Sahara is the world's largest hot desert and one of the harshest environments on the planet. It is third largest desert overall after Antarctica and the Arctic, which are cold deserts. At 3. read more
The Sahara is divided into western Sahara, the central Hoggar (Ahaggar) Mountains, the Tibesti Mountains, the Air Mountains, an area of desert mountains and high plateaus, Ténéré desert and the Libyan desert, which is the most arid region. read more
Climate. The Sahara has one of the world's most severe climates. Typically, the Sahara landscape experiences extremely limited to virtually no rainfall, powerful and capricious winds and wide temperature ranges. Across the desert, the annual average rainfall equals no more than a few inches or less, much less in many locations. read more
The southern region of the Sahara desert has a dry tropical climate, wherein a stable continental air mass exists along with an unstable marine air mass. The annual rainfall in this region is about 5 inches, with snow in higher regions. read more