How El Niño Is Reshaping Property Risk and Business Interruption

El Niño is a naturally occurring phase of the El Niño–Southern Oscillation, characterized by warmer-than-average sea-surface temperatures in the central and eastern equatorial Pacific. While El Niño does not determine specific local outcomes, it can shift probabilities, and the impacts depend on event strength, timing, regional exposure and interaction with other climate drivers.

Today, it needs to be treated as something far more practical for risk and resilience leaders. It might become a stress test for multinational operations, property portfolios, and business interruption assumptions. In a warmer baseline climate, higher global temperatures and more frequent heatwaves can amplify losses. A potential strong to very strong El Niño is unlikely to produce an isolated event. Instead, it raises the likelihood of multiple natural hazards and climate risks emerging in different places within the same season, with effects that cascade through suppliers, logistics corridors, energy systems, and commodity markets.

The challenge is not just forecasting individual events but understanding how interconnected disruptions create accumulation risk and how business interruption spreads through supply chain and operational dependencies rather than remaining confined to the impacted site.

Organizations best positioned for 2026 will prioritize proactive planning and greater risk transparency over reactive response.

El Niño should be treated as a global risk issue

El Niño should be treated as a global business risk, not just a regional weather event. Severe weather does not respect borders, and neither do today’s interconnected supply chains. While Asia Pacific, Latin America, and North America may experience the most direct impacts, organizations in Europe and the Middle East can still face significant disruption through supplier outages, freight delays, constrained ports, rising input costs, and energy instability. A company may avoid damage to its own facilities but still suffer major business interruption if a critical supplier is affected or multiple disruptions occur simultaneously.

The climate conditions expected in 2026 are expected to affect property and business interruption risk. A higher likelihood of heatwaves and above-average temperatures can increase stress on assets, workers, and power grids, while drought in some regions will reduce water availability and elevate wildfire risk. In regions where El Niño shifts rainfall toward wetter conditions, heavier rainfall can increase flooding and landslide threats. Beyond direct damage to buildings and equipment, these events can disrupt the infrastructure that keeps businesses operating, including transportation networks, ports, utilities, and labor availability, creating cascading impacts across global operations.

Some of the most important considerations we see are outlined below.

1. Global accumulation risk and correlated losses

One of the most consequential features of a potential strong to very strong El Niño is the possibility of global accumulation risk across multiple regions at the same time. Correlated hazards challenge the assumption events will be sufficiently diversified across geography and season. A plausible pattern is the parallel occurrence of drought conditions in parts of Asia Pacific alongside flooding in the Americas, a combination that can disrupt upstream supply and downstream demand simultaneously.

2. Extreme weather-driven property and business interruption exposures

Alongside accumulation, extreme weather-driven property and business interruption exposures deserve close attention. In El Niño influenced periods, wildfire can become a major exposure in places such as Australia and parts of Southeast Asia, flooding can drive both direct damage and extended downtime in wetter-exposed parts of the Americas, such as parts of southern South America and the southern/southwestern United States depending on season and event evolution, and heat stress can reduce industrial productivity while straining physical infrastructure and cooling systems.

From a business interruption perspective, the loss driver is often the duration and complexity of the disruption rather than the initial event. Flooding can block access roads, delay repairs, and slow the movement of replacement parts. Wildfires can trigger evacuation zones and extend disruption through smoke, ash and degraded air quality. Heat can lead to equipment derating, safety work stoppages, and constraints to reduce output even when facilities remain online. These are some of the scenarios that expose gaps between how organizations imagine interruption and how it unfolds in real operations.

3. Supply chain disruption as a business interruption amplifier

Supply chain disruption could become a major amplifier of business interruption in 2026, even when property loss is limited at the insured location itself. Under a strong to very strong El Niño scenario, risk managers should anticipate disruption drivers that sit outside the facility boundary but can still stop production. For example, production losses in parts of Southeast Asia can affect manufacturing sectors such as electronics and chemicals. Agricultural shocks in Latin America can, depending on affected crops and regions, ripple into global commodity markets, creating volatility that hits cost structures and availability for inputs. Transport bottlenecks can become acute when ports and waterways are constrained, and strategic chokepoints become more important than usual. These disruptions often appear first as lead time variability, missed delivery windows, and inventory imbalance, and only later become a full interruption. That lag is exactly why early risk identification and scenario planning can add tangible value.

4. Operational and energy stress

Operational and energy stress is another area where El Niño can change both the likelihood and the severity of interruption. In hotter conditions, cooling demand rises. When cooling demand spikes at the same time across regions, local grids face greater stress and reliability risk increases. This is especially relevant for energy-intensive operations where short interruptions can cascade into longer recovery windows.

At the same time, water scarcity can become a limiting factor for production processes, particularly where water is essential for cooling or manufacturing itself. The business interruption exposure here is not always a complete outage. It can be degraded performance, load shedding, or restrictions imposed during peak demand, all of which can reduce output and disrupt service commitments.

5. Macroeconomic volatility and second-order impacts

El Niño-related disruption can also create macroeconomic volatility that influences business interruption exposure and the cost of recovery. Commodity price fluctuations across food, energy, and raw materials can suddenly pressure margins and disrupt procurement. Repair inflation and contractor constraints can extend downtime, particularly if multiple regions are dealing with impacts at once. Recovery plans that do not account for price volatility, lead time spikes, and resource competition can look robust in theory and still fail under real market conditions.

What this means for exposures and risks in 2026 and action resilience leaders can take now

Property risk assessments remain essential, but in a year shaped by correlated hazards and interconnected disruptions, organizations should ensure they reflect their true operating footprint. Many planning assumptions still center on a single major event, while a strong to very strong El Niño scenario may involve multiple, overlapping disruptions across regions.

Preparation should prioritize proactive risk mitigation over reactive response. Physical resilience measures should align with the most likely hazards, including enhanced flood protection where rainfall risk is elevated, stronger fire protection and vegetation management in wildfire-prone areas, and heat-resilient infrastructure with cooling redundancy where extreme temperatures threaten assets and workforce safety.

Operational resilience should reduce concentration risk by diversifying critical suppliers where possible, documenting contingency plans and switching timelines, and assessing shared water and energy dependencies across sites and regions.

Insurance planning should evolve alongside operational readiness by validating business interruption and natural catastrophe coverage, identifying accumulation exposures across locations and business units, and ensuring claims documentation, governance, and escalation processes are established before an event occurs. In a more volatile risk environment, organizations that prepare in advance will be better positioned to recover quickly and minimize disruption.

International coordination is becoming business-critical

El Niño highlights why international coordination is becoming business-critical for multinational companies. Simultaneous cross-border impacts require aligned program structures, consistent local policy execution, and coordinated claims handling. Without that coordination, response becomes fragmented precisely when time, clarity, and uniform execution matter most. This is also where international programs shift from being a conceptual discussion to a practical requirement. When multiple countries are impacted at once, companies need an approach that can manage both risk insight and implementation globally, with local expertise connected through a coordinated network.

In 2026, the most resilient organizations will be those that treat El Niño not as a distant climate topic, but as a real-world governance and preparedness challenge. The goal is not to predict the exact shape of disruption. The goal is to ensure the organization can operate through multi-regional stress, preserve supply chain stability, improve risk transparency across dependencies, and take decisive pre-event actions that reduce loss and shorten recovery. Winning risk and resilience leaders will focus on what they can control, the practical steps to protect people, maintain operations, and reduce financial volatility in a year where volatility may be the defining feature.