Europe’s 2026 drought: short-term shock, long-term lessons

Europe's 2026 heatwaves have turned climate change from a long-term scenario into present-day operating conditions. Drought and record heat have fuelled wildfires across France and Spain, raised water temperatures, and pushed major rivers to exceptionally low levels. On the Rhine, Europe’s most important inland waterway, water levels at the Kaub chokepoint have fallen below the previous record low reached in 2018. Shallow water forces barges to sail part-loaded, lifting freight costs and straining supplies of chemicals, fuels and other industrial inputs. The chemicals cluster around Ludwigshafen and fuel distribution in western Germany are particularly exposed.

Previous episodes of exceptionally low Rhine water levels have coincided with periods of weaker chemicals production, illustrating how transport disruption can spill over into industrial activity (see chart).

We expect a modest, lagged drag on activity rather than a sharp shock. Current estimates suggest a hit of around 0.1-0.4% of German Q3 GDP, with the Kiel Institute putting the impact at 0.1-0.2%, or EUR 1-2 billion. The greater significance is for the growth narrative: after a resilient Q2 and a jump in early-Q3 sentiment, consensus German growth looked set to be potentially upgraded by around 0.3 percentage points, to roughly 1.0% this year and 1.4% next¹; the drought could keep German growth below 1% for 2026. Mitigants exist – firms have built resilience since 2018 and 2022, and Sunday road haulage has again been permitted. Losses will likely be recovered.

For European Central Bank (ECB) monetary policy, inflation implications could matter more. Across Europe, drought tends to lift food and energy prices – the latter via reduced nuclear and hydro generation as rivers run low and warm – even as the growth impulse is negative. With the hawkish ECB likely more sensitive to upside price risk than to a modest growth drag, the episode, on balance, reinforces the case for two further ECB hikes this year.

This summer is not an isolated event. As droughts and low-water periods become more frequent and severe, companies in exposed locations could face recurring disruption through lost output, higher logistics and energy costs, and under-utilised assets. While short-term losses may be recovered, they can leave a lasting impact on investment decisions. For investors, assessing how well companies anticipate, absorb and adapt to these shocks is becoming indispensable.

We are accordingly placing additional focus on physical climate risk and corporate resilience. Our engagement with companies in exposed sectors – chemicals, power, steel, refining and capital goods – centres around three themes.

• Climate scenario analysis: We seek to understand whether companies have scenario analysis in place that allows them to accurately capture the physical risks they are facing. We also question whether companies would need to update that analysis and their climate strategy as physical risks intensify.
• Wildfires: For companies that operate in or near high-fire-risk areas, wildfires might result in the evacuation of production sites and cause disruption of production. Therefore, companies need to be prepared and ensure that protection is in place. They should also define who is accountable for emergency response, coordinate with local authorities, and maintain crisis plans. Regular training of staff is important.
• Low river levels and high water temperatures: Reflecting on past Rhine episodes, we seek to understand how companies evolved their risk management and whether cooling and logistics processes were adapted. To what extent is product delivery affected, eg, for large or heavy components? For companies reliant on shipped raw materials (chemicals, steel, oil and refined products) management of supply shortages is key. This includes assessing production and price effects, and whether alternative sourcing is in place. 

We regard this engagement as integral to our fiduciary duty to protect long-term value for clients, and as a contribution to the resilience of the companies and communities in which they invest.