Published on and written by Cyril Jarnias
Lost in the Atlantic off West Africa, Cape Verde is often portrayed through its beaches, its music, or its colorful towns. But behind the postcard images lies a surprisingly complex territory, where a string of volcanoes risen from the Atlantic forms a country tiny in area yet immense in the diversity of its landscapes, local climates, and environmental challenges. Understanding the geography of Cape Verde means entering the intimate world of an archipelago shaped by fire, wind, ocean… and the scarcity of fresh water.
A Volcanic Archipelago at the Heart of the Atlantic
At first glance, the Cape Verde position explains much. The nation occupies 10 main islands and 5 islets scattered in the mid-Atlantic, about 450–570 kilometers off the coast of Senegal, in the arid Sahelian band. Its total land area is around 4,033 to 4,072 km², barely one and a half times the size of Luxembourg, but its maritime space – the Exclusive Economic Zone – covers over 800,000 km².
The archipelago stretches between 14° and 18° north latitude and 22° to 26° west longitude, symbolically halfway between Africa and the Americas. The islands form a sort of horseshoe open to the west, amidst north-south Atlantic shipping routes. This configuration explains both its historical strategic importance as a navigation relay and the direct impact of the ocean on climate, resources, and natural hazards.
The Cape Verde archipelago is entirely of volcanic origin, formed by magma rising from the ocean floor. It rests on a submarine elevation called the “Cape Verde Rise,” peaking about 2.2 km above the surrounding seabed. The subsurface is mainly composed of igneous rocks, including basalts, resulting from volcanic activity tens of millions of years old.
Barlavento and Sotavento: Two Halves of One Country
The prevailing winds, the northeast trade winds, naturally split the archipelago into two groups. To the north, the Barlavento (Windward) Islands include Santo Antão, São Vicente, Santa Luzia, São Nicolau, Sal, and Boa Vista, complemented by the islets of Branco and Raso. Their total area is approximately 2,239 km². To the south, the Sotavento (Leeward) Islands – Maio, Santiago, Fogo, and Brava – cover about 1,803 km².
The division between western and eastern islands is tangible. The younger western islands feature rugged terrain with deep valleys and peaks exceeding 2000 meters. In contrast, the older, more eroded eastern islands offer gentler landscapes with vast sandy plains, a desert-like interior, and salt flats.
The table below provides a synthetic overview of the two main groups:
| Group | Main Islands | Approximate Area | Dominant Profile |
|---|---|---|---|
| Barlavento | Santo Antão, São Vicente, Santa Luzia, São Nicolau, Sal, Boa Vista | ~2,239 km² | North more mountainous, east desertic and sandy |
| Sotavento | Maio, Santiago, Fogo, Brava | ~1,803 km² | West volcanic and agricultural, east flatter and more arid |
Within this framework, the central position of Santiago, the country’s largest island and seat of the capital Praia, stands as a pivot geographically, demographically, and economically.
Volcanic Relief: From Calderas to Desert Plains
Despite its modest size, the geography of Cape Verde concentrates a variety of landforms that is surprising. Official descriptions speak of terrain that is “steep, rugged, rocky, and volcanic,” a phrase that well sums up the character of the western islands.
Mountains of Fire: Fogo, Santo Antão, Santiago, São Nicolau
The country’s highest point is Pico do Fogo on the island of Fogo, reaching 2,829 meters. This stratovolcano dominates the entire island, almost entirely shaped by its successive eruptions. Its vast summit crater, a caldera about 8 km in diameter, is open to the east, and its rim sits at around 1,600 meters in altitude. It is within this spectacular volcanic amphitheater that high-altitude agriculture has developed, nourished by soils particularly rich in ash.
This is the altitude in meters of the highest point on Santo Antão island, Tope de Coroa.
Santiago, home to nearly half of Cape Verde’s population, has a slightly different profile: a string of ridges and massifs, including Pico da Antónia (around 1,392–1,819 m, depending on sources), dominates the island’s center. From there, agricultural valleys and drier areas extend toward the coast. North of Praia, Serra Malagueta – around 1,064 meters – is another major landmark, both geographical and ecological.
Plains, Dunes, and Salt Flats: The Geography of the Flat Islands
In contrast, Sal, Boa Vista, and Maio present a radically different setting. These islands, sometimes called “rasa” (flat), rarely exceed a few hundred meters in altitude. On Sal, Monte Grande tops out at about 400 meters, while Boa Vista rises to Monte Estância (approx. 387 m) and Maio to Monte Penoso (approx. 436 m). To these modest landforms add vast beaches, shifting dune fields, and wide, near-desert expanses, such as the Deserto de Viana on Boa Vista.
The eastern islands of Cape Verde, with low topography and a dry climate, lack exploitable aquifers or water sources. This natural constraint contrasts with the presence of large salt flats, notably on Sal and Maio, which historically shaped the local economy.
An Archipelago Structured by Extremes
Even on a regional scale, the geography of Cape Verde is marked by extreme points that speak volumes about its position in the Atlantic:
| Extreme Point | Location | Island | Geographical Particularity |
|---|---|---|---|
| Northernmost Point | Ponta do Sol | Santo Antão | Northern tip of the archipelago |
| Southernmost Point | Ponta Nho Martinho | Brava | Southern cape of the country |
| Westernmost Point | Ponta Chão de Mongrade | Santo Antão | Westernmost point of Africa |
| Easternmost Point | Ponta Meringuel | Boa Vista | Eastern extremity, facing West Africa |
These few capes delineate a country whose land area remains limited but which projects vast maritime sovereignty, with a continental shelf of about 5,600–5,900 km² and a coastline of 965 km.
Climate: An Oceanic Sahel
The geography of Cape Verde cannot be understood without its climate, a strange mix of Sahelian desert and temperate oceanic influence. The country lies in the arid Sahel belt, but the nearby Atlantic – notably the cold Canary Current to the north – moderates temperatures. The result: a climate largely classified as hot desert (BWh), but without the temperature extremes of continental deserts.
Two Seasons Rather Than Four
In Cape Verde, the climate calendar is divided into two main periods. From October to mid-July, it’s the “tempo das brisas”, the windy season, characterized by northeast trade winds, dry air, abundant sunshine, and temperatures regularly between 21 and 29 °C (70 and 84 °F). From July to September, even early October, comes the “tempo das chuvas”, the short rainy season, which is also the hottest and most humid period.
In Praia, on Santiago, average daily temperatures generally range between 22 °C and 27 °C (72-81 °F) throughout the year.
Rain, a Scarce and Fickle Commodity
Rainfall is the other key to understanding the geography of Cape Verde. It is low, highly irregular, and extremely varied from island to island and with altitude. On average, the country receives around 200–250 mm of rain per year, but this figure doesn’t tell the whole story: much of this water can fall in a few violent storms between August and October, while some months remain completely dry.
On Sal, for example, long-term data shows barely 70–145 mm per year, with months like May sometimes recording no precipitation at all. In Praia, the annual average varies between about 170 and 240 mm depending on the data series. In contrast, some high-altitude areas on islands like Santo Antão or Fogo can receive up to 1,000–2,000 mm per year due to orographic rainfall, where clouds are forced to rise by the terrain.
This altitudinal gradient and exposure to winds allows for distinguishing four major ecological zones:
| Ecological Zone | Approximate Rainfall | Typical Location |
|---|---|---|
| Arid | < 100 mm/year | Low coasts, Sal, Boa Vista, Maio |
| Semi-arid | 100–250 mm/year | Intermediate plateaus, Sotavento |
| Sub-humid | 250–1,000 mm/year | Mid-level mountain slopes |
| Humid | > 1,000 mm/year (sometimes up to ~2,000 mm) | Windward slopes of major massifs (Santo Antão, Fogo, Santiago) |
This geography of rain, more than the simple physical map, structures agricultural potential, vegetation, and human settlement.
Winds, Dust, and Cyclones
Cape Verde also lives by the rhythm of the winds. The northeast trade winds blow for most of the year, particularly from November to May, bringing relative coolness, sunshine, and lively seas that delight kitesurfers on the beaches of Sal or Boa Vista.
Between November and March, the trade winds can be replaced by the Harmattan, a dry continental wind laden with dust from the Sahara. Its arrival tints the sky ochre, reduces visibility, and further dries the atmosphere. Although this phenomenon is well known in West Africa, in Cape Verde, it increases the vulnerability of already fragile soils.
Finally, the archipelago gives its name to “Cape Verde-type hurricanes.” It is south of the islands that tropical waves often form, which, crossing the Atlantic, become some of the season’s most powerful cyclones. Most bypass the archipelago or are still only simple depressions when passing by, but recent history reminds us the risk is not theoretical: Hurricane Fred struck the islands directly in 2015. The risk window generally concentrates between late August and mid-September.
Soils, Resources, and Agriculture: A Land of Poor Soils
Beneath the rocky and volcanic surface, the geography of Cape Verde faces another major challenge: poor soils. Most are derived from recent ash and basaltic flows, classified as young soils (Inceptisols, Entisols) with shallow depth, often on steep slopes. Their organic matter content is low – often less than 2% – their texture rather coarse, and their water retention capacity limited. Moreover, these soils strongly retain phosphorus and lack potassium, with a generally neutral to alkaline pH.
Volcanic Soils, Alluvium, and Limestone
Broadly, several types of soils can be distinguished across the archipelago:
Distribution and main characteristics of soils across the archipelago’s islands, directly influencing agricultural potential.
Soils of basaltic origin, young, poorly differentiated, and erosion-prone. Found on Santo Antão, São Nicolau, Fogo, Santiago, and Brava.
Alluvial and colluvial soils, deeper and more fertile, concentrating most irrigated agriculture on the western islands.
Localized presence of better-developed soils (Mollisols) with differentiated horizons on some ancient surfaces.
Soils of a calcareous nature associated with dunes and salt flats on Sal, Boa Vista, and Maio, poorly suited for crops without significant irrigation and soil amendments.
The combination of these pedological constraints and rain scarcity explains why only a small fraction of the territory is truly suitable for cultivation.
Agriculture Under Pressure
The numbers show the scale of the challenge. Approximately 79,000 hectares – or about 790 km², slightly less than 20% of the land area – are classified as agricultural land. But the share of arable land is, according to sources, around 10–13% of the territory, and even a significant portion of that is only usable as rainfed land, without reliable irrigation.
Land use can be summarized as follows:
| Type of Land Use | Approximate Share of Territory |
|---|---|
| Total Agricultural Land | ~19–20 % |
| – of which Arable Land | ~10–13 % |
| – Permanent Crops | ~0.7–1 % |
| – Permanent Meadows and Pastures | ~6 % |
| Forests | ~21–22 % |
| Other Uses | ~58–60 % |
Within arable land, the vast majority is rainfed agriculture (agricultura de sequeiro): about 33,000 hectares, or 80–90% of the agricultural area (SAU), depends exclusively on irregular rains. The emblematic crops of these slope areas are corn, beans, and peanuts, regularly threatened by recurring droughts.
Drip irrigation has been introduced on nearly 800 hectares in irrigated agriculture zones.
The archipelago pays the price for this harsh geography: agriculture now represents only a modest fraction of GDP (less than 12%, often around 8%, even 5% depending on the year) and about 18% of the active population is still directly engaged in it. Over 90% of consumed foodstuffs are imported, and dependence on imported cereals covers about 85% of national needs.
Water: Scarcity as a Structuring Reality
The geography of Cape Verde is inseparable from a simple reality: there is very little water. No perennial rivers, no large lakes, very few permanent springs. The national water balance testifies to this scarcity: total renewable resources are estimated at 0.3 km³ per year. Annual withdrawals, on the order of 0.02 km³, are massively directed toward agriculture (93%), with the rest going to domestic (6%) and industrial (1%) use.
Of the small amount of rain received, 67% evaporates, 20% runs off to the sea, and only 13% infiltrates to recharge groundwater aquifers. In a context of high evapotranspiration and limited vegetation cover, every millimeter of rain is precious.
The Water Economy: Aquifers, Desalination, and Fog
Most exploitable freshwater comes from groundwater aquifers fed by rainfall. The “technically mobilizable” volume in a normal year is estimated at about 65 million m³ per year. But this availability varies enormously from island to island, depending on relief, rock porosity, and aquifer depth. Some islands like Sal, Boa Vista, and Maio, being very flat, severely lack natural resources.
Around twenty desalination units provide water to over half the population.
In some mountainous regions, like Serra Malagueta on Santiago, experiments in fog collection have also been conducted since the 1960s. Fog nets capture moisture from clouds and condense it into water, a process still modest in volume but valuable for isolated communities.
Vegetation, Forests, and Biodiversity: A Dry but Living Archipelago
For a long time, travelers’ accounts described Cape Verde as an archipelago stripped of vegetation, gullied, almost lunar. There is some truth to this: the combination of deforestation, overgrazing, and slope farming has led to massive degradation of environments, to the point that over 90% of soils are now exposed to a moderate to very high risk of desertification.
From Original Savanna to Plantations of Exotic Species
Originally, the islands harbored a mosaic of dry savannas, dry forests, and, in humid mountain areas, subtropical laurel forests (laurisilva), similar to those still visible in Madeira or the Canaries. Much of this vegetation cover has been destroyed over the centuries to clear fields, provide firewood, or timber.
Forest cover increased by nearly 45% between 1990 and 2005.
This progression is mainly due to agroforestry plantations of introduced species, robust in the face of drought: Prosopis juliflora, Leucaena leucocephala, Jatropha curcas, and a few others. These trees, often used to restore soils, produce firewood, or stabilize slopes, do not, however, recreate the original ecosystems.
Fragments of endemic laurisilva, relics of Pliocene subtropical forests, survive in a few humid, usually inaccessible mountainous areas. There, genera like Apollonias, Ocotea, Persea, Clethra, Dracaena, or Picconia testify to a much lusher botanical past, now confined to rainier archipelagos of Macaronesia.
A Fragile Endemic Fauna
The archipelago’s isolation has favored the emergence of a remarkable set of endemic species. Cape Verde counts about 755 to 850 plant species, of which nearly a hundred are endemic, but it is especially the birds and reptiles that illustrate this uniqueness.
Four bird species are strictly endemic to the archipelago: the Raso Lark, the Cape Verde Warbler, the Cape Verde Sparrow, and Alexander’s Swift. Furthermore, the Bourne’s Heron, a critically endangered species, now breeds only on Santiago island. The archipelago also constitutes a major nesting site for many seabirds, such as the Cape Verde Shearwater and Fea’s Petrel.
Regarding reptiles, at least 11 endemic species are recorded, among them giant geckos like Tarentola gigas. The large skink Macroscincus coctei, however, is considered probably extinct. The only indigenous mammals are bats; all others – goats, pigs, monkeys, cats, rats – were introduced by humans.
At sea, biodiversity is equally rich: schools of tropical and subtropical fish, endemic crustaceans like the pink spiny lobster, sea turtles, dolphins, and whales (including humpback whales) thrive in relatively warm waters (22–27 °C year-round) and complex submarine reliefs, with reefs and seamounts.
Environmental Challenges: A Territory on the Front Line
The geography of Cape Verde, as shaped by volcanoes, ocean, and Saharan wind, places it on the front line facing several environmental threats.
Erosion, Desertification, and Soil Degradation
Soil erosion is a major problem. On the island of Santiago, for example, studies have measured extremely variable erosion rates depending on the area: from 0.2 to over 4,000 tons of soil lost per km² per year. Factors combine: steep slopes, episodes of intense rain concentrated over a few days, poorly structured soils, farming on steep slopes, overgrazing, historical deforestation, but also sand extraction from beaches for construction.
Over 90% of the archipelago’s soils are exposed to a moderate to very high risk of desertification. On these flat, arid islands, sand-laden winds shift dunes, attack vegetation, and threaten to bury the few cultivated areas.
Vulnerable Coastline and Coastal Urbanization
Nearly 80% of the population lives in coastal areas. This human concentration on a 965 km coastline, often low-lying, increases vulnerability to sea-level rise, marine erosion, and storms. Rapid urbanization of coastal zones, sometimes at the expense of fertile land, adds to sand extraction from beaches for the construction industry, accentuating coastal retreat.
Policy Responses and Green Ambitions
Facing these challenges, the fight against desertification, land degradation, droughts, and climate change has become a pillar of public policy. Soil and water conservation has been at the heart of agricultural strategies for over half a century, with reforestation programs, cultivation terraces, anti-erosion structures.
Several ministries manage land and the environment, relying on strategic documents like the National Communication on Climate Change, the Nationally Determined Contribution (INDC), and the National Adaptation Programme of Action (NAPA). However, experts note the persistent absence of a comprehensive legislative framework specifically dedicated to the protection of agricultural soils.
On the energy front, the geography of Cape Verde – regular wind, strong sunshine – has been turned into an asset. Wind farms installed on several islands provide about a quarter of electricity, and sometimes nearly 30% in some years, placing the country among renewable energy pioneers in Africa. The stated goal is to reach 50% renewable energy by 2030, or even more long-term. This “green” shift is supported by innovative partnerships, like a debt-for-nature swap concluded with Portugal, converting part of the debt into funding for environmental projects.
A Tiny Territory, An Immense Maritime Space
A final essential aspect of the geography of Cape Verde: its maritime dimension. The state is recognized as “archipelagic,” allowing it to draw straight baselines connecting its islands and islets, thus encompassing a vast area of internal and archipelagic waters. The total length of these baseline segments is about 539 nautical miles, and the water surface area included within the system reaches nearly 35,963 km² for 4,033 km² of land, a water-to-land ratio of nearly 9 to 1.
Cape Verde claims a 12-nautical-mile territorial sea, a 24-nautical-mile contiguous zone, and a 200-nautical-mile Exclusive Economic Zone (EEZ), covering over 800,000 km². Within this EEZ, the country holds sovereign rights for the exploration and exploitation of natural resources, including fish, minerals, as well as energy from waves, currents, and wind.
These rights coexist with recognized freedoms for all states – navigation, overflight, laying of cables and pipelines – governed by the United Nations Convention on the Law of the Sea, to which the country is a party. Delimitation agreements have been signed with Senegal and Mauritania, although disagreements persist on some boundaries.
The coral reefs of the Canary Islands represent 0.09% of the global total.
Conclusion: A Geography Under Tension, Between Fragility and Assets
The geography of Cape Verde is an exercise in permanent nuance. On one hand, a tiny, arid archipelago, with no permanent rivers, poor soils, and limited natural resources, placed on the front line of climate change. On the other, a territory whose internal diversity is astonishing: active volcanoes, fertile calderas, golden dunes, vertiginous cliffs, replanted forests, fragments of laurisilva, marine areas of great richness.
The archipelago’s geography imposes strong constraints: food dependency, water stress, vulnerability to erosion and sea-level rise. However, it also offers strategic levers: exceptional wind and solar potential, a key position on Atlantic routes, and a unique ecological heritage justifying the creation of nature reserves (like on Santa Luzia, Raso, and Branco) and the development of terrestrial and marine natural parks.
Ultimately, Cape Verde embodies the idea of a country whose physical space, though small, is intensely shaped by natural forces. Understanding the geography of Cape Verde means measuring how much every public policy decision – whether concerning coastal urbanization, support for rainfed agriculture, desalination, reforestation, or renewable energy – is a direct response to a demanding, sometimes hostile, but profoundly unique environment. It is also grasping why this archipelago, both dry and oceanic, has become a real-world laboratory for adaptation to ecological limits in a warming world.
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Cyril Jarnias is an independent expert in international wealth management with over 20 years of experience. As an expatriate himself, he is dedicated to helping individuals and business leaders build, protect, and pass on their wealth with complete peace of mind.
On his website, cyriljarnias.com, he shares his expertise on international real estate, offshore company formation, and expatriation.
Thanks to his expertise, he offers sound advice to optimize his clients' wealth management. Cyril Jarnias is also recognized for his appearances in many prestigious media outlets such as BFM Business, les Français de l’étranger, Le Figaro, Les Echos, and Mieux vivre votre argent, where he shares his knowledge and know-how in wealth management.
