How global warming is pushing up food prices

In Europe, climate change is no longer an abstract risk discussed in policy papers — it increasingly shows up in everyday life, including in the supermarket aisle. Olive oil has become an obvious example for many EU consumers, while coffee and chocolate prices have reminded us how tightly Europe is connected to climate-vulnerable supply chains abroad. A growing body of research now links these price shocks to a simple driver: more frequent and more intense weather extremes hitting crops, logistics, and markets at the same time. 

What scientists at the Barcelona Supercomputing Center found

In a recent perspective paper in Environmental Research Letters, Maximilian Kotz and co-authors (including researchers affiliated with institutions in Spain and Germany, and a contributor based at the European Central Bank in Frankfurt) compiled documented cases where food prices spiked following extreme heat, drought, or heavy rainfall. They focused on 16 examples across 2022–2024, relying on widely reported cases with official price statistics, and then assessed how unusual the underlying climate conditions were compared to historical records. 

Their argument is not that climate change is the only cause of food inflation — energy costs, labour, trade dynamics, and geopolitics also matter — but that extremes are increasingly acting as the trigger that turns a stressed system into a visible price spike. 

The EU lens: Why Europe is exposed even when the crop failure is elsewhere

Europe imports a significant share of key foods and inputs, and even domestically produced items are priced inside a wider market. That means drought in Southern Europe, heat in West Africa, or water stress in Brazil can translate into higher prices in Berlin, Milan, or Amsterdam — especially for globally traded commodities like cocoa and coffee. 

The paper highlights how climate extremes can hit both domestic markets and global markets simultaneously — the worst-case scenario for price stability. It also notes that these shocks can complicate inflation management, because food prices feed into headline inflation and make price dynamics harder for central banks to control. 

What kinds of foods are affected?

The case studies span staples and everyday items — the kinds of products that shape diets, not just luxury consumption.

One Europe-relevant example is olive oil. The authors describe how drought conditions in Southern Europe across 2022–2023 were associated with around a 50% year-on-year increase in EU olive oil prices by January 2024, on top of earlier increases. 

Another example often cited in coverage of the study is the UK potato market, where extreme rainfall was linked with a sharp price jump — illustrating that it’s not only heat and drought that matter, but also winter and shoulder-season precipitation that disrupts planting, harvesting, and storage. 

Beyond Europe, the same mechanism applies to goods European consumers buy every week. The paper and accompanying analysis highlight cocoa price surges following extreme heat in major producing regions, and coffee price shocks tied to drought and heat stress in key exporter countries. 

Why this matters beyond the grocery bill

The most direct risk is distributional: when food prices jump quickly, higher-income households adjust; lower-income households absorb the shock by buying less or switching to cheaper, less nutritious calories. The authors explicitly connect climate-driven price spikes to food security pressures and to downstream health risks — from undernutrition to chronic diet-related disease — because fruits, vegetables, and nutrient-dense foods are often the first to be cut when budgets tighten. 

And there is a wider systems risk: if extreme weather makes food prices more volatile, it can strain public budgets, destabilise inflation expectations, and increase political pressure — especially when multiple regions are hit in the same year. 

The takeaway for Germany and the EU

For Europe, “climate-driven food inflation” is not just an agricultural issue. It’s a resilience issue across the whole chain: farming, water management, transport infrastructure, storage, trade policy, and social protection. And it reinforces an uncomfortable reality: until global emissions reach net zero, extremes are expected to intensify — and price shocks will become a more regular feature of food markets.

illuminem Voices is a democratic space presenting the thoughts of leading Sustainability & Energy writers, their opinions do not necessarily represent those of illuminem.

Track the real‑world impact behind the sustainability headlines. illuminem’s Data Hub™ offers transparent performance data and climate targets of companies driving the transition.