Why Climate Change Is Reshaping the Insurance Industry in 2026

The answer matters because insurance is one of the main financial mechanisms used to transfer disaster risk from households and businesses to private and public institutions. When coverage becomes more expensive or harder to obtain, part of that risk remains with property owners, governments, and the broader economy.

The 2026 insurance market therefore cannot be understood through catastrophe-loss totals alone. The more important story is the interaction between physical risk, exposure, insurance capacity, reinsurance, regulation, and the ability of risk models to keep pace with changing conditions.

Catastrophe Losses Remain Elevated

The first half of 2025 was an unusually costly period for the global insurance market.

According to Aon reporting, insured natural-catastrophe losses reached approximately $100 billion in H1 2025. The figure was about 40% higher than the $71 billion recorded in H1 2024 and more than twice the $41 billion 21st-century average for a first half. The World Economic Forum, citing Aon, reported total economic losses of approximately $162 billion during the first half of 2025.

That is substantial, but one caution is important: catastrophe-loss totals are not a direct measure of climate-change damage. Annual insurance losses are affected by the severity and frequency of hazards as well as the value and location of exposed property, construction and repair costs, insurance penetration, policy terms, and other factors.

Different Industry Sources Produce Different Loss Totals

There is no single universal catastrophe-loss number because major catastrophe-modeling and reinsurance organizations use different datasets, event definitions, and loss-estimation methodologies.

These figures should not be added together or treated as interchangeable. Each source applies its own methodology and coverage definitions. The important conclusion is broader: insured catastrophe losses have remained high across several recent reporting periods.

2025 Was a Major Year for Wildfires and Severe Convective Storms

Los Angeles Wildfires

The Palisades and Eaton wildfires in Los Angeles were among the defining insurance-loss events of 2025. Aon estimated their combined insured losses at approximately $41 billion, with economic losses of about $58 billion.

The events demonstrated how a concentrated catastrophe in a densely developed, high-value area can create an outsized insurance loss even when it is geographically limited.

Severe Convective Storms

Severe convective storms, including thunderstorms, hail, and tornadoes, were another major source of insured losses. Aon estimated global insured losses from severe convective storms at approximately $61 billion in 2025, the third-highest annual total on record for that peril in Aon’s dataset.

This is important for insurers because catastrophe exposure is not limited to hurricanes. Secondary perils such as severe storms and wildfires can produce frequent, geographically concentrated claims and can materially affect annual loss costs.

Extreme Heat Has a Different Risk Profile

Aon attributed at least 25,000 fatalities worldwide to extreme heat in 2025. This is a broader societal-risk statistic rather than a direct measure of property-insurance claims.

Keeping the distinction clear matters. Heat mortality illustrates the human cost of climate risk, but it should not be treated as equivalent to insured catastrophe losses because the insurance mechanisms involved are different.

Climate Change Is One Factor in a Larger Loss Equation

Climate change can influence the frequency and severity of certain natural hazards, but it is not the only factor determining insurance losses.

Catastrophe losses can also increase because:

• More homes and businesses are being built in hazardous areas.
• Population and property values are increasing in exposed regions.
• Construction, labor, and replacement costs have risen.
• Insurance coverage may expand or contract over time.
• Policy limits, deductibles, and coverage terms affect insured losses.
• Reinsurance and capital-market conditions influence how risk is transferred.

Munich Re, for example, describes climate change and growing exposure as contributors to natural-catastrophe losses. Its 2025 review also noted that the United States avoided a direct hurricane landfall, while wildfires, floods, and severe thunderstorms drove a large share of insured losses.

The correct conclusion is therefore not that climate change single-handedly caused a particular annual insurance-loss total. It is that climate change is changing the underlying hazard environment while exposure and economic factors determine how that hazard translates into insured losses.

The Long-Term Loss Trend Is Important

Short-term catastrophe totals can vary dramatically from year to year. Longer-term averages provide a clearer picture of how the insurance market’s exposure is changing.

Verisk reported that average annual insured catastrophe losses reached approximately $132 billion during its most recent five-year period, compared with about $104 billion in the preceding five-year period.

That demonstrates a substantial increase in average insured-loss levels between the two periods. It does not, by itself, prove that losses are accelerating at a constant annual rate.

Swiss Re has also described a long-term trend in which inflation-adjusted insured catastrophe losses have increased by roughly 5% to 7% per year since 1996. This is best understood as a long-term trend rate rather than a claim that insured losses rise by exactly that percentage every year.

What Happened in the First Half of 2026?

The early 2026 data adds an important piece of context that should not be ignored.

Munich Re estimated that natural disasters caused approximately $112 billion in global losses during H1 2026, of which about $44 billion was insured. That corresponds to an insurance protection gap of roughly 60%.

However, H1 2026 losses were slightly below Munich Re’s inflation-adjusted 10-year average. Munich Re estimated the 10-year H1 average at about $113 billion for total losses and $50 billion for insured losses. The five-year averages were higher at approximately $136 billion and $66 billion, respectively.

This distinction matters. H1 2026 does not support a claim that catastrophe losses are setting a new short-term record. What it does show is that even a below-average half-year can leave a large share of disaster costs uninsured.

Why the Protection Gap Matters

If total economic losses are much larger than insured losses, households, businesses, charities, and governments must absorb the remainder through savings, borrowing, public assistance, or other forms of financial support.

A large protection gap can therefore become an economic resilience problem even when the insurance industry itself is not bearing the majority of a catastrophe’s losses.

Why Insurance Availability Is Changing in High-Risk Areas

Climate-related hazard is contributing to higher insurance risk in many areas, but insurer decisions are also influenced by regulation, claims history, reinsurance costs, underwriting capacity, construction expenses, and broader market conditions.

The U.S. Department of the Treasury’s Federal Insurance Office has documented rising homeowners-insurance costs and declining availability in areas facing elevated climate-related risk. The Congressional Budget Office has likewise documented insurers reducing or discontinuing coverage in some high-risk markets and the increasing role of state residual insurance programs.

Florida and Louisiana Illustrate the Problem

Florida and Louisiana demonstrate how several forces can combine to put pressure on insurance markets.

In these states, catastrophe exposure interacts with claims costs, reinsurance conditions, regulatory rules, insurer capacity, and the financial structure of state-backed or residual-market mechanisms.

The result can be higher premiums, fewer private-market options, and greater reliance on residual insurance arrangements.

Climate risk is therefore an important part of the story, but it should not be presented as the sole cause of pricing or availability problems.

Insurer Withdrawals Can Affect the Broader Housing Market

When private insurers restrict new business or leave high-risk areas, the consequences can extend beyond the insurance policy itself.

Mortgage lenders generally require homeowners to maintain property insurance. If coverage becomes difficult or expensive to obtain, homeowners can face additional financial pressure and potential obstacles to buying, refinancing, or selling property.

Persistent insurance shortages can also reduce housing-market liquidity and put pressure on property values in some high-risk areas, although the effect varies by location and market conditions.

These interactions help explain why insurance availability is increasingly treated as a broader financial-stability and housing-market issue rather than simply an insurance-industry problem.

State-Backed Insurance Programs Are Becoming More Important

When private insurance becomes unavailable or unaffordable, some states rely on residual or state-supported insurance programs.

These programs can provide an important safety net, but they also create public-sector exposure. The Congressional Budget Office has documented how state residual-market programs can grow when private insurers withdraw and how catastrophe losses can create financial pressure for those mechanisms.

It is more accurate to describe these programs as important backstops facing growing risk than to make a blanket claim that they were never designed or funded to handle current losses.

Are Traditional Risk Models Falling Behind Climate Risk?

Insurance pricing depends heavily on models that estimate how often losses may occur and how severe those losses could be.

A January 2026 report from the Institute and Faculty of Actuaries and the University of Exeter warned that climate risks may be developing faster than governments and financial institutions are prepared to manage. The report also highlighted the potential effect of declining aerosol pollution, which has historically exerted a cooling influence.

The report describes aerosol cooling as having offset around 0.5°C of warming. That figure refers to climate warming that may have been masked by aerosols. It should not be converted into a claim that insurance models themselves contain a 0.5°C error.

A more defensible insurance conclusion is that some institutions may be underprepared for the pace of physical climate change, creating challenges for insurers that rely on historical data and forward-looking hazard assumptions.

Historical Data Has Limits

Insurance models traditionally rely heavily on historical observations, event catalogs, physical science, and statistical assumptions. When the underlying hazard environment changes, historical patterns may become less representative of future conditions.

That does not mean catastrophe models are simply “wrong.” It means insurers need to evaluate how well historical experience, climate projections, exposure changes, and scenario analysis represent the risks they expect to carry in the future.

What Climate Risk Means for Insurer Financial Exposure

Climate-related losses can affect insurers through claims, capital requirements, reinsurance costs, underwriting capacity, and investment decisions.

A 2025 study published in Humanities and Social Sciences Communications modeled how climate-related changes in hurricane damage could affect the U.S. homeowners-insurance market under different assumptions.

The study estimated potential reductions in insurers’ expected utility, or modeled economic value, ranging from approximately 11% to 100% under its scenarios. Importantly, these are model-based, end-of-century scenario results, not observed losses to current insurance-company balance sheets and not a forecast that the industry will actually lose that percentage of value.

The study also found that the modeled effects depended on assumptions about damage volatility and insurer risk aversion. That uncertainty is central to interpreting the result.

Reinsurance Is Becoming More Important

Reinsurance provides financial protection to primary insurers when catastrophe losses exceed specified thresholds or otherwise meet the terms of the reinsurance contract.

Higher reinsurance costs can put upward pressure on primary-insurance premiums and influence how much risk insurers are willing to underwrite. The pass-through is not necessarily one-for-one because insurers also have other sources of capital, pricing decisions, retention levels, and underwriting tools.

As catastrophe risk becomes more difficult to price, reinsurance and other forms of risk transfer become increasingly important components of the insurance market.

What the Protection Gap Means for Households and Governments

A large protection gap means that insurance is covering only part of the economic damage created by disasters.

For households, that can mean using savings, loans, or government assistance to rebuild. For governments, it can mean greater pressure on emergency-response budgets, disaster-recovery programs, and public insurance arrangements.

The broader economic issue is resilience. When insurance does not cover a large share of losses, recovery becomes more dependent on household wealth and public resources.

Why the Insurance Crisis Is Not Just About Climate

It is tempting to reduce the current insurance-market problem to one statement: climate change is causing insurance premiums to rise.

The reality is more complicated.

Climate change can increase or alter physical hazards. But the final insurance price also depends on where people build, how much property is exposed, construction costs, claims experience, legal and regulatory environments, reinsurance prices, insurer capital, and the amount of coverage consumers purchase.

That distinction is important because different problems require different responses.

• Risk reduction: stronger buildings, mitigation, defensible space, flood protection, and resilient infrastructure.
• Better pricing: premiums that reflect current and expected risk while considering affordability.
• Better data and modeling: models that incorporate changing hazards and exposure.
• Insurance-market capacity: enough private and public capital to support high-risk areas.
• Risk transfer: effective reinsurance and alternative risk-transfer mechanisms.
• Public policy: rules that balance availability, affordability, and financial stability.

What This Means for Homeowners in 2026

Expect Location to Matter More

Insurance pricing is becoming increasingly sensitive to the specific hazards surrounding a property. Two homes in the same state can face very different wildfire, flood, wind, hail, or coastal risks.

Do Not Compare Premiums Alone

A cheaper policy may have higher deductibles, lower limits, different exclusions, or less favorable coverage. Homeowners should compare the full policy rather than focusing only on the annual premium.

Understand the Protection Gap

Standard homeowners insurance does not cover every natural hazard. For example, flood and earthquake coverage often require separate insurance arrangements.

Homeowners should understand which hazards are covered, the applicable deductibles and limits, and what financial losses they would have to absorb themselves.

Mitigation Can Matter

Risk-reduction measures can sometimes improve a property’s resilience and may affect how insurers view the risk. Examples can include fire-resistant materials, vegetation management, storm-hardening measures, flood mitigation, and other property-specific improvements.

What the 2026 Insurance Data Really Shows

Several conclusions are supported by the current evidence:

• Insured catastrophe losses have remained elevated over recent years.
• Long-term insured-loss averages have increased between recent five-year periods.
• Climate change is an important contributor to changing natural-hazard risk, but catastrophe-loss totals also depend heavily on exposure, development, costs, coverage, and other factors.
• H1 2026 losses were slightly below Munich Re’s historical averages, demonstrating that individual years and half-years remain volatile.
• The protection gap remains substantial, with Munich Re estimating that about 60% of H1 2026 global natural-disaster losses were uninsured.
• Insurance availability and affordability are becoming significant issues in some high-risk U.S. markets.
• Digital tools, climate analytics, and evolving risk models are becoming more important to insurance decision-making.

The Future of Insurance in a Changing Climate

The future insurance market is likely to be defined by more granular risk assessment, stronger catastrophe modeling, greater investment in resilience, and continued pressure on the availability and affordability of coverage in high-risk areas.

Technology can improve how insurers analyze exposure, estimate risk, and respond to disasters. But better technology does not eliminate physical risk. It helps insurers measure and manage that risk more effectively.

Likewise, higher premiums and stricter underwriting do not automatically mean the market is failing. In some cases, they are signals that insurance prices are responding to higher expected losses. The policy challenge is finding a balance that maintains availability while encouraging risk reduction and avoiding unsustainable subsidies.

Conclusion

Climate change is reshaping insurance, but the most accurate story is broader than simply saying catastrophe losses are accelerating because of warming.

Recent loss levels are high. Aon reported approximately $100 billion in insured catastrophe losses in H1 2025, while Munich Re estimated about $108 billion of insured natural-catastrophe losses for full-year 2025 under its methodology. Munich Re’s H1 2026 estimate was about $112 billion in total losses and $44 billion insured, with losses slightly below its inflation-adjusted 10-year average.

Those numbers show both the scale of catastrophe risk and the importance of the protection gap. They also show why methodology and time period matter when comparing industry statistics.

Climate change is one important driver of the changing physical-risk environment, but exposure growth, development, inflation, construction costs, insurance penetration, reinsurance, regulation, and underwriting capacity also influence what insurers ultimately pay.

The insurance industry’s challenge in 2026 is therefore twofold: measure changing risk more accurately and keep enough insurance capacity available at prices that households and businesses can realistically afford.

The strongest response will not come from one solution. It will require better risk modeling, stronger property and infrastructure resilience, sound insurance pricing, effective reinsurance, appropriate public policy, and better understanding of what insurance does and does not cover.

Frequently Asked Questions

Are catastrophe insurance losses increasing because of climate change?

Climate change is an important contributor to changing natural-hazard risk, but annual insured-loss totals are influenced by many factors, including exposure, development, property values, inflation, insurance penetration, policy terms, and claims conditions. It is therefore inaccurate to attribute an entire annual loss total to climate change alone.

How much were global insured catastrophe losses in 2025?

The answer depends on the reporting methodology. Munich Re estimated about $108 billion in insured natural-catastrophe losses in 2025, while Aon estimated approximately $127 billion. Gallagher Re reported approximately $129 billion. These estimates differ because the organizations use different datasets, event definitions, and methodologies.

What were natural-disaster losses in the first half of 2026?

Munich Re estimated approximately $112 billion in worldwide natural-disaster losses during H1 2026, of which about $44 billion was insured. It described those losses as slightly below its inflation-adjusted 10-year average, while the insurance protection gap was about 60%.

What is an insurance protection gap?

The protection gap is the portion of economic losses that is not covered by insurance. A 60% protection gap means that approximately 60% of the relevant losses were uninsured under the specific dataset and methodology being discussed.

Are insurers leaving areas because of climate change?

Some insurers have reduced or withdrawn coverage in high-risk areas, but climate risk is not the only factor. Claims costs, reinsurance, regulation, underwriting capacity, construction costs, and broader market conditions can also affect insurer decisions.

Are insurance risk models failing?

It is too broad to say that all insurance risk models are failing. However, climate scientists and actuaries have raised concerns that institutions may be underprepared for the pace of physical climate change. Insurers therefore face the challenge of combining historical data with updated hazard science, climate scenarios, and changing exposure.

Does the 0.5°C aerosol figure mean insurance models are off by 0.5°C?

No. The approximately 0.5°C figure refers to warming that has been offset or masked by aerosol cooling. It should not be interpreted as a measured error in insurance risk models.

What does the Nature study say about insurers and climate change?

A 2025 study modeled the potential effects of climate-related changes in hurricane damage on the U.S. homeowners-insurance sector. Depending on the scenario and assumptions, it modeled reductions in insurers’ expected economic value of roughly 11% to 100%. These are long-term scenario results, not observed current industry balance-sheet losses.

Can insurance premiums keep rising?

Premiums can rise when expected losses, uncertainty, reinsurance costs, claims costs, or other expenses increase, but pricing is also shaped by regulation, competition, capital, and consumer demand. There is no single rule that determines how much premiums will change.

Sources

• Aon: Climate and Catastrophe Insight 2026
• Munich Re: Natural Disaster Figures for 2025
• Munich Re: Natural Disaster Figures, First Half of 2026
• Verisk: Long-Term Insured Catastrophe Loss Trends
• Swiss Re Institute: Natural Catastrophes in 2025
• U.S. Department of the Treasury, Federal Insurance Office: Homeowners Insurance Costs and Availability
• Congressional Budget Office: Climate Change, Disaster Risk, and Homeowner’s Insurance
• Institute and Faculty of Actuaries / University of Exeter: Parasol Lost
• Nature: Insuring the Future – The Insurance Industry’s Role in Climate Change Mitigation

Last updated: August 21, 2026. Catastrophe-loss estimates, insurance-market conditions, and climate-risk assessments can change as new events and revised estimates become available. Always check the latest source data when making financial or insurance decisions.