How does climate change affect coffee cultivation?
Climate change is the biggest threat to coffee growing. Studies project that by 2050, roughly half of today's Arabica growing areas will no longer be viable.
Why that is
Arabica is a demanding plant. It needs temperatures between 15 and 24 °C, consistent rainfall, no frost nights, and no extreme heat. Rising average temperatures are shifting the zones where these conditions exist upward — and in the mountains, space eventually runs out.
The effects are already visible. In Brazil, the world's largest coffee producer, droughts and frost events in 2021 and 2022 reduced the harvest by up to 30% and drove global market prices sharply higher. In Central America, coffee leaf rust (Hemileia vastatrix), favoured by warmer and more humid conditions, cost hundreds of thousands of jobs between 2012 and 2014.
Four main risks are driving the crisis. First, rising temperatures that stress Arabica and shorten ripening time — less sugar, less aroma. Second, changing rainfall patterns — too much rain at the wrong time or drought during the growth phase. Third, growing pest and disease pressure, as fungi and insects are more aggressive in warmer regions. Fourth, extreme weather events — hail, storms, frost — that can destroy entire harvests.
The coffee industry is responding on multiple levels. Researchers are breeding climate-resistant hybrids — crosses between Arabica and Robusta that tolerate heat better while still delivering good flavour. Farmers are investing in shade trees that lower plantation temperatures by 2–4 °C. And Specialty Robusta is gaining importance because Robusta is more heat-resistant than Arabica.
In practice at Green Wall Coffee
At our café on Sophienstraße 27 in Berlin-Lichtenberg, we feel climate change indirectly: prices rise, availability fluctuates, some lots simply disappear from one season to the next. I talk openly with guests about this — the coffee in the cup is not a given product. Drinking specialty coffee supports farmers who invest in quality and sustainability rather than mass production. That alone doesn't solve climate change — but it creates better conditions for the people who grow our coffee.
Feel free to drop by for a coffee — Green Wall Coffee, Sophienstraße 27 in Berlin-Lichtenberg, Mon–Fri 8am–5pm and Sat 10am–5pm.
Further reading
Related questions:
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- Where is coffee grown around the world?
- Why Doesn't Coffee Grow in Europe?
Also relevant:
- What is Specialty Robusta and why is it being discovered now? — Coffee Varieties & Botany
- What Is the Difference Between Arabica and Robusta? — Coffee Varieties & Botany
All questions in this topic: Growing, Origin & Climate