Nepedia
Back to Discover
Advanced Reader
🗺️

Kalahari Desert

geography Maturity 11-13 Next article →

The Kalahari is a vast semiarid sandy savanna located in Southern Africa. It covers much of Botswana and extends into parts of Namibia and South Africa. The name is derived from the Tswana words Kgala, meaning "the great thirst," or Kgalagadi, meaning "a waterless place." This name reflects the many areas covered by red sand that lack permanent surface water. While many call it a desert, it is actually a semiarid ecosystem. It supports more life than a true desert, such as the Namib Desert to the west.

Sand dune in the Kalahari Desert (Namibia)
Sand dune in the Kalahari Desert (Namibia)

The climate of the Kalahari is complex and changes based on location. In the north and east, the region is sub-humid with dry forests and salt lakes. The south and west are more arid, consisting of xeric savanna or semi-desert. This area is often called a "Kalaharian" climate, which is subtropical. The average annual temperature is 18°C or higher. However, the altitude of the region helps keep it cooler than the Sahara. Most of the land sits between 600 and 1600 meters above sea level. Because of this height, winter frost is common from June to August.

Atmospheric circulation drives the weather patterns across the Kalahari. In winter, the region is dominated by the Kalahari High anticyclone. During the summer, a system called the Kalahari Heat Low develops. This low-pressure system is driven by strong heating at the surface. It is known as a Thermal Low. This system helps control moisture-bearing winds from the Indian Ocean. In the north and northwest, the weather shifts between the Intertropical Convergence Zone and continental trade winds. The ITCZ brings rain during the wet season, while trade winds cause the dry season.

Gewitter in der Kalahari
Gewitter in der Kalahari

Rainfall in the Kalahari is quite limited and seasonal. The dry season can last for eight months or more. The wet season typically lasts between one and four months. Rainfall varies significantly depending on where you are in the desert. The driest areas receive only about 110 mm of rain per year. The wettest areas receive just over 500 mm annually. In the summer, rainfall often arrives in the form of heavy thunderstorms. In the sunniest parts, the region records over 4,000 hours of sunshine every year.

The Kalahari has a very different history than its current state. During the late Pleistocene, the region was much wetter and cooler. Fossil evidence from Gcwihaba Cave shows abundant vegetation and permanent water. Between 30,000 and 11,000 years Before Present, the area supported large mammals. These included elephants, antelopes, and hippopotamuses. Large paleolakes and river systems once covered much of the land. One massive body of water, Lake Makgadikgadi, once covered up to 50,000 square kilometers. As the global climate shifted toward the Holocene, evaporation rose and rainfall decreased. This led to the gradual drying of the region.

Despite the dryness, the Kalahari supports diverse flora and fauna. The vegetation includes acacia trees, grasses, and the unique kiwano fruit.

Devil's thorn flower (Tribulus zeyheri), Kalahari
Devil's thorn flower (Tribulus zeyheri), Kalahari

In the south and west, the vegetation is mainly xeric savanna. This area includes trees like the Camelthorn and the shepherd's tree. The animal life is also very rich. You can find lions, cheetahs, leopards, and African wild dogs.

Suricata
Suricata

Small animals like meerkats are also common. During the rainy season, tens of thousands of flamingos visit the salt pans. The Okavango Delta in the northwest provides a permanent water source for many species.

The San people have lived in the Kalahari for 20,000 years. They are hunter-gatherers who have a deep knowledge of the environment. They hunt wild game using bows and poisoned arrows. They also gather edible plants, nuts, and insects. Because water is scarce, the San have developed clever ways to survive. They can find water in plant roots and desert melons. They also use the blown-out shells of ostrich eggs to store water.

San-Mann beim Sammeln der Teufelskralle (Namibia)
San-Mann beim Sammeln der Teufelskralle (Namibia)

Their long history shows how humans can adapt to such a challenging landscape.

654 words

Where will your curiosity go next?

Keep exploring at your chosen reading level.

🖼️ Images & Media (5)
File:Gewitter in der Kalahari.jpg
Gewitter in der Kalahari.jpg
File:Devil's thorn flower (Tribulus zeyheri), Kalahari.jpg
Devil's thorn flower (Tribulus zeyheri),...
File:Sand dune in the Kalahari Desert (Namibia).jpg
Sand dune in the Kalahari Desert (Namibia).jpg
File:Suricata.jpg
Suricata.jpg
File:San-Mann beim Sammeln der Teufelskralle (Namibia).jpg
San-Mann beim Sammeln der Teufelskralle...
More to explore

🔬 Go deeper

More advanced topics to explore

🪜 Step back

Simpler topics to build understanding

What is Nepedia?

A free, ad-free encyclopedia for children. Every article is written at five reading levels, so the same page works for a five-year-old and a fifteen-year-old — use the level switcher above to see this one change. No account needed to read.