Global insured natural catastrophe losses fell well below trend in the first half of 2026. Swiss Re Institute is warning the industry not to mistake a quiet six months for evidence that risk is receding.
Insured nat cat losses reached an estimated US$42 billion in H1 2026, according to Swiss Re Institute. That figure is 16% below the 10-year average and the lowest first-half total since 2020. Severe convective storms were the single biggest driver at an estimated US$28 billion, also below long-run trend.
The below-trend result was partly a function of geography rather than reduced hazard. Storm activity across the US remained above average, but relatively few of the highest-impact events struck Texas, the Southern Plains, or the Southeast. Those regions typically generate the largest insured losses because storms combine high frequency with high concentrations of insured assets.
Insurance covered approximately 42% of first-half economic losses, above the 30-year average of 33%. That ratio reflects the concentration of damage in highly insured markets rather than a structural improvement in global coverage.
The contrast with Venezuela illustrates the protection gap directly. An earthquake sequence there caused an estimated US$20 billion in economic losses. Low insurance penetration means only a small share of that damage is expected to be insured.
Balz Grollimund, Head Catastrophe Perils at Swiss Re, said the below-trend figure should not be read as a signal that risk had diminished. "A less costly first half of the year does not mean the risk has gone away," Grollimund said. "One major hurricane, earthquake or wildfire can quickly change the picture."
Swiss Re Institute identifies wildfire as the fastest-growing weather peril globally. Insured wildfire losses in Europe have grown by an estimated 8% to 11% per year in real terms since 1970, according to the research. Europe now experiences 64% more hot days, defined as days reaching 30°C or above, than in the 1950s.
June's record heat and persistent dry conditions in western Europe set up an active wildfire season. Major fires affected France and Spain in July.
"Europe's recent wildfires highlight how hotter and drier conditions are making large wildfires more likely and, with more homes, businesses and infrastructure built in risk-exposed areas, also more costly," said Grollimund. Europe's wildfire losses have grown at 8 to 11% a year since 1970, and the pricing and modelling gap that creates for brokers with European property clients is widening faster than the models anticipated.
Swiss Re Institute noted that fire seasons are becoming longer and that wildfire conditions are now affecting regions historically less exposed to the peril, a pattern already visible well beyond Europe in parts of North America, Australia and Asia.
The quiet H1 does not reduce the risk of a costly full year. Historically, the second half accounts for an average of 58% of global insured nat cat losses, driven primarily by North Atlantic hurricanes.
While El Niño conditions tend to suppress Atlantic hurricane activity, they do not eliminate landfall risk. Some 22% of US hurricane landfalls since 1950 occurred during El Niño years. El Niño can also shift risk toward the Central and East Pacific and alter flood and wildfire dynamics elsewhere.
El Niño is expected to strengthen through the end of 2026, with a 97% probability it persists into early 2027, redistributing catastrophe risk away from the Atlantic and toward the Pacific, drought and wildfire.
The long-term cost drivers, growing exposure in hazard-prone areas and rising reconstruction costs, remain in place regardless of seasonal conditions. Swiss Re Institute said strengthening resilience and reducing underlying risk would become increasingly important to maintaining the affordability and availability of insurance.
The specific numbers in this report are global, but the underlying lesson applies to every market: a quiet first half is not evidence that renewal pricing should soften, and treating it that way risks a real disconnect with underwriters who are pricing against the multi-decade wildfire and hurricane trend, not the last six months.
For brokers with clients holding wildfire-exposed property, whether in southern Europe, the western US, Australia or elsewhere, Grollimund's 8-11% annual real-terms growth figure is a directly usable number when a client questions a premium increase that seems disconnected from a quiet local season. It reframes the conversation from "why is my rate rising when nothing happened here this year" to "this is a structural, compounding trend that a single quiet season doesn't pause."
For brokers with clients in Atlantic hurricane-exposed regions, the 58% second-half loss concentration is a reason to treat any mid-year rate softening with caution rather than locking in long-term program decisions based on H1 conditions alone. And for brokers advising clients in Pacific-exposed or drought-prone regions, the strengthening El Niño pattern is worth raising proactively now, since it redistributes risk toward perils and geographies that may not have featured prominently in a client's own recent loss history.
