Vietnam Coffee in a Warming World: Why Robusta Is Moving Ahead

In Hanoi, breakfast without coffee is unthinkable. Host Sen Nguyen grew up in her mother's small cafe, learning to brew with a metal filter at the age of six. That personal story sums up a national picture: there is a coffee shop, a chain outlet or a pushcart on nearly every street corner in Vietnam, and the country stands as the world's second-largest coffee exporter after Brazil.

Four beans, two destinies: arabica and robusta

Coffee has four main species: arabica, robusta, liberica and excelsa. The difference between the first two is not only in the cup. Arabica offers floral and fruity notes with a sweeter profile, while robusta carries dark chocolate, nutty tones and, at its best, caramel; at its worst it turns rubbery and burnt. That is why the global market long treated arabica as the premium bean, and consumer perception pushed robusta into second place.

Growing conditions are mirror opposites. Robusta thrives at low altitude in hot, rainy climates, while arabica demands highlands of one thousand to fifteen hundred metres because it dislikes heat. Native to the Ethiopian highlands, arabica evolved for cool conditions. As the climate warms, this biological detail turns into a multi-billion-dollar trade equation, and the altitude ceiling works against arabica.

From French colony to the East Germany deal

Vietnam's coffee story begins under French colonial rule, which lasted roughly eight decades. The French planted estates across the Central Highlands and discovered the secret of the soil early: fertile red basalt earth plus a temperature regime suited to robusta. The second break came in 1980, when coffee-hungry East Germany signed an agreement to supply equipment, expertise and training in exchange for coffee purchases. Colonial-era know-how fused with German discipline, and output leapt.

Today's scale is staggering. About 2.5 million people work in the sector, and nearly 90 percent of output comes from the Central Highlands. Last year's harvest ran near 30 million sixty-kilo bags. Between 40 and 45 percent of exports go to European Union countries; according to coffee and cocoa association figures quoted by the VietnamPlus newspaper, the country sold more than 1.5 million tonnes in the 2024-2025 season, a record worth 8.4 billion dollars.

Heat punishes some, rewards others

The record rests on favourable prices as much as a generous harvest. According to customs data reported by the VietnamNet news site, full calendar 2025 exports reached 1.6 million tonnes worth 8.92 billion dollars, with robusta alone contributing 6.59 billion dollars, or 73.8 percent of total value. Robusta traded around 4,500 to 4,600 dollars a tonne while arabica neared 9,000; the widening gap wrote an invisible premium onto the Vietnamese bean, and the price spread swung in the country's favour.

A warming world could make that gap permanent. A peer-reviewed modelling study published in the IOPscience journal in late 2025 estimates that land suitable for coffee in the Central Highlands could shrink by 62 percent under a high-emissions path and 27 percent under a moderate one. As arabica climbs uphill, open land runs out and volumes are expected to fall over coming decades. Reporting from the field by the Independent newspaper notes that some Vietnamese robusta varieties yield two to three times more than counterparts elsewhere, and roasters are already raising the robusta share in blends.

Still, life is no garden party for robusta either. Growers rarely use the phrase climate change; instead they describe rains turning erratic and heat growing unbearable. Producers profiled in a digitaljournal.com report carrying AFP material make the same point: a woman who swapped interior design in the capital for robusta farming now grows floral-scented beans to defeat prejudice. The species may be hardy, but each farm's microclimate must be won anew every year.

Ageing farmers, strict rules, uncertain handover

The sector's quietest crisis is demographic. The average farmer is around 60, children work for companies in big cities, and few young people plan to return to the land. The paradox is that coffee pays: successful growers can earn hundreds of millions of dong a year, tens of thousands of dollars. Yet most labour is informal, so a population ageing without social protection or pension savings means land will change hands within ten or twenty years.

The second pressure comes from Brussels. The European Union's deforestation regulation requires coffee entering the bloc to be deforestation-free, legal and traceable down to plot level. A conference announced on the official europa.eu pages of the EU delegation recalls that the rule took effect in June 2023 and demands farm-level tracking for compliance. The trouble is that traceability is not rural Vietnam's strength; teams start from pilot districts that already keep databases and spread the practice outward. A paper in the Enpress Publisher journal warns that paperwork could push small growers out of the market and produce unintended side effects.

The next decade of Vietnamese coffee will take shape between these two pressures. There are hopeful signs from the younger generation: producers working directly with city roasters, focused on bean quality and aroma, testing arabica hybrids of Latin American and African origin. Heat both hinders and helps Vietnamese coffee; what makes the difference will be investment in quality and traceability.