Coffee-growing countries becoming too hot to cultivate beans, analysis finds

Damaged coffee beans in San Tecla, El Salvador. The plants, especially the arabica variety, struggle in temperatures above 30C. Photograph: AFP/Getty Images

In Ethiopia, the birthplace of coffee, more than 4m households rely on coffee as their primary source of income. It contributes almost a third of the country’s export earnings, but for how much longer is uncertain.

“Coffee farmers in Ethiopia are already seeing the impact of extreme heat,” said Dejene Dadi, the general manager of Oromia Coffee Farmers Cooperatives Union (OCFCU), a smallholder cooperative.