A recent report highlights a dramatic increase in global insured catastrophe losses during the initial half of 2025, reaching an estimated $100 billion. This figure represents the second-highest first-half total on record, trailing only the $140 billion seen in 2011. The primary drivers behind this substantial rise are identified as widespread wildfires and severe convective storms (SCS) predominantly affecting the United States. While the financial toll is significant, the report also notes a relatively low protection gap in the U.S., indicating a higher rate of insurance coverage for these events compared to global averages.
This surge in insured losses underscores the escalating financial impact of natural disasters, particularly in regions with high exposure to events like wildfires and intense storms. The concentration of losses in the U.S. also brings into focus the varying levels of insurance penetration worldwide. As climate patterns continue to evolve, the challenge for the insurance sector lies not only in managing these increasing losses but also in extending crucial coverage to underserved regions, thereby enhancing global resilience to catastrophic events.
Rising Insured Losses and Regional Impact
Global insured catastrophe losses have surged to an estimated $100 billion in the first half of 2025, marking a significant increase from the $71 billion recorded in the same period of 2024. This figure is substantially higher than the 21st-century average of $41 billion for the first half of the year. The surge is predominantly driven by events in the United States, where over 90% of the insured losses originated. This unprecedented concentration of losses in a single country highlights the particular vulnerability of the U.S. to specific types of natural disasters and the effectiveness of its insurance mechanisms.
The report from Aon's Catastrophe Insight team details that 19 separate events, with 18 occurring in the U.S., each surpassed $1 billion in insured losses during the first six months of 2025. The sole non-U.S. event exceeding this threshold was a severe convective storm outbreak in Europe in late June. Other notable global events included Cyclone Alfred in Australia, incurring $900 million in insured losses, and Windstorm Éowyn in Ireland and the UK, which resulted in $690 million in insured claims. This data points to a continued pattern of significant natural disaster impacts, with a disproportionate share affecting highly developed and insured markets.
Economic Consequences and the Protection Gap
The total economic losses from global natural catastrophes in the first half of 2025 reached at least $162 billion, slightly up from $156 billion in the first half of 2024, and well above the 21st-century average of $141 billion. These economic losses were primarily fueled by events such as the Palisades and Eaton wildfires in California, the Myanmar earthquake, and numerous severe convective storm episodes across the United States. For the U.S. specifically, economic losses soared to at least $126 billion, making it the costliest first half on record for the region, significantly surpassing the $115 billion recorded in 1994, and dwarfing the H1 average since 2000 of $41 billion.
Despite the high economic and insured losses in the U.S., a remarkable observation from the report is the lowest recorded protection gap—the difference between total economic and insured losses—at 38%. This figure is a sharp contrast to the 21st-century global average of 69% and reflects the comparatively high insurance penetration in the United States. While other regions experienced economic losses below their long-term H1 averages, the ongoing challenge remains to expand insurance coverage globally to enhance resilience in underserved areas, as emphasized by Aon's experts. The industry is actively seeking ways to not only transfer but also analyze and mitigate risks to improve overall preparedness against natural disasters.
