How climate change is redrawing the global cocoa map

There is something irremediably sensual about the aroma of a melting square of dark chocolate. Yet behind this commonplace experience lies a precise geography of cocoa—fragile and unraveling under the effects of global warming. Theobroma cacao—literally "food of the gods"—is a temperamental plant: it only tolerates a narrow band of latitudes, constant humidity, and temperatures between 18 and 32°C. It is a balance that climate disruption threatens to break for good.

The cocoa belt is cracking

For centuries, the geography of cocoa followed a simple logic: an equatorial belt extending from 20° north to 20° south of the equator, where rainfall is abundant and temperatures are stable. Today, this belt is fracturing. IPCC climate models project a temperature rise of 2 to 2.5°C in major producing regions by 2060. While seemingly modest, this figure translates into increased evapotranspiration, more frequent droughts, and more erratic rainfall—all forms of water stress to which the cocoa tree is particularly vulnerable.

"Cocoa doesn't grow just anywhere it's hot: it grows where it's just hot enough, just humid enough, with soils that are just rich enough. Remove just one of these parameters, and the plant collapses."

High-altitude regions are already beginning to offer temporary climate refuges. In Ivory Coast, farmers have observed a gradual shift toward the west and north of the country over the last decade—areas that were once too cool or too dry but are now more favorable. However, these internal migrations will not suffice indefinitely. Pressure on protected forests is intensifying, worsening an already massive deforestation problem.

A portrait of regions under pressure

• Ivory Coast & Ghana: High Threat

Together, these two countries produce more than two-thirds of the world's cocoa. Prolonged droughts, the resurgence of fungal diseases (swollen shoot, Phytophthora), and eroding yields paint a worrying picture. A 2024 study by the University of Leeds estimates that areas suitable for cocoa cultivation could shrink by 40% in Ivory Coast by 2050 under the IPCC's intermediate scenario.

• Ecuador & Peru: Moderate Pressure

As the cradle of "fino de aroma" cocoa, Ecuador is seeing its precious Arriba Nacional varieties threatened by an amplified El Niño and irregular rainfall at high altitudes. In Peru, the producing valleys of San Martín and Huánuco are facing the encroachment of alternative crops under economic pressure. The irreplaceable genetic richness of these origins is particularly at stake.

• South India, Indonesia, Mexico: Emerging Terroirs

Bucking the trend, some marginal regions are becoming areas of growing interest. Kerala and Tamil Nadu, the island of Sulawesi, and the highlands of Chiapas—these terroirs are benefiting from conditions that are now more favorable. While still a minority in global production, they are beginning to attract the attention of chocolatiers in search of resilient sourcing.

The paradox of new terroirs

The map is being redrawn, but in a deeply unequal way. While higher latitudes—northern Mexico, parts of the Colombian Andes, portions of Myanmar or Tanzania—are theoretically becoming more suitable, the obstacles to a rapid transition are considerable. It takes a decade between planting a cocoa tree and its full productive maturity. Local expertise, processing infrastructure, and economic networks: none of these can be relocated in just a few years.

The chocolate industry, for its part, faces a contradictory mandate: securing long-term supplies while meeting a constantly rising global demand. Chocolate consumption in Southeast Asia and India is growing at a rate of 5 to 7% per year. This tension between constrained supply and expansive demand fuels price speculation that primarily weakens small-scale producers.

Adaptation & Resilience - What industry players are doing

Faced with the emergency, several strategies coexist. The first is varietal: developing cultivars resistant to drought and disease without sacrificing aromatic qualities. The International Center for Tropical Agroforestry (ICRAF) and the World Cocoa Foundation have been working for several years on hybrids adapted to future conditions. The results are promising but insufficient: resistant varieties often struggle to convince artisanal chocolatiers, who are deeply attached to the flavor profiles of fine vintages.

The second strategy is systemic: agroforestry. Planting cocoa trees under the cover of shade trees—banana trees, legumes, forest species—can reduce ground temperature by 2 to 4°C, maintain humidity, and improve biodiversity. This approach, promoted by organizations like Rainforest Alliance and brands like Barry Callebaut or Valrhona, faces an economic hurdle: the farmers involved are among the poorest in the world, and the model requires initial investments that few can afford without support.

"Adapting the cocoa sector to climate change is first and foremost a problem of economic justice. Without a decent income for producers, no resilience strategy will hold up over time."

The third path, more radical, consists of diversifying purchasing geographically right now. Some "bean-to-bar" chocolatiers are actively exploring new origins—Vietnam, Myanmar, Haiti, Sri Lanka—not out of exoticism, but as a climate diversification strategy. These terroirs, still marginal, could become essential pivots in two decades.

The taste of the future

There is a question the industry prefers to avoid: will the chocolate of 2050 taste the same as today's? The honest answer is no. Resistant varieties developed in labs do not replicate the aromatic profiles of fine single-origin cocoas. Venezuela's Porcelana, Ecuador's Nacional, and Mexico's Criollo are products of terroir in the strictest sense: they express a specific geography, soil microbiology, and a particular rainfall pattern. Change the conditions, and you change the taste.

This is not a catastrophe in itself—wine has undergone comparable mutations, and enthusiasts have learned to love new terroirs. But it is a reminder that climate change is not just a matter of degrees and precipitation: it is also a matter of sensory memory, cultural heritage, and the link between a place and what it produces.

Industrial chocolate as we know it is a recent historical construct—less than two centuries old in its current form. It will, necessarily, be something else in two centuries. The question is not whether the cocoa map will change. It is already changing. The question is who will decide how it is redrawn, and for whose benefit.