Sahara vs. Atacama Desert: Key Differences

FeatureSahara DesertAtacama Desert
LocationNorth Africa (11 countries)South America (Chile, Peru)
Area9.2 million km² (3.6M sq mi)1.05 million km² (405k sq mi)
Climate TypeHot desert (BWh)Cold coastal desert (BWk) + fog zone
Avg Temperature30°C (86°F)18°C (64°F)
Precipitation<25 mm/yr<5 mm/yr (driest non‑polar)
LandformsSand dunes (ergs), hamadas, mountainsRocky plateaus, salt flats (salars), dunes
FloraSparse: acacia, grasses, succulentsVery sparse: cacti, tillandsias, lichens
FaunaCamels, addax, fennec, reptilesVicuña, guanaco, flamingos, foxes

Sahara is vast, hot, sandy; Atacama is smaller, cooler, fog‑influenced, mineral‑rich.

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