Where Is the Driest Place in Africa? The Sahara Desert

The lowest rainfall in Africa occurs in the Sahara Desert, specifically in the eastern and central regions (such as parts of Egypt, Libya, and Sudan). This vast hyper-arid zone covers much of North Africa.

Precipitation Extremes

• Average Annual Rainfall: Many areas receive less than 1 mm (0.04 inches) per year.
• Record Dry Spells: Some weather stations in the Libyan Desert and the Qattara Depression have recorded years with absolutely zero precipitation.
• Comparison: The Sahara is the world's largest hot desert and rivals the Atacama Desert in South America for the title of driest place on Earth.

Why Is It So Dry?

The Sahara lies under the subtropical ridge, a belt of high pressure where air descends, warms, and inhibits cloud formation. The Atlas Mountains and Ethiopian Highlands also create rain shadows, blocking moisture from the Atlantic and Indian Oceans.

This extreme aridity defines the ecosystem, limiting life to highly specialized xerophytes and nomadic fauna.