Aon reports $100b in global insured disaster losses for H1

This figure marks the second-highest total for any first half of a year.

Global insured losses from natural disasters reached at least $100b in the first half of 2025 (H1 2025), according to Aon’s preliminary estimates. 

This figure marks the second-highest total for any first half of a year, trailing only 2011, which saw $140b in insured losses. 

It is also well above the 21st-century first-half average of $41b and median of $37b.

The first-half loss total also surpasses the full H1 2025 figures of 2023 and 2024, which each recorded $71b in insured losses. 

Over 90% of this year’s insured losses occurred in the United States, driven primarily by wildfires and severe convective storms (SCS).

The insurance protection gap—defined as the share of economic losses not covered by insurance—was provisionally estimated at 38%, the lowest H1 2025 figure on record. 

This is significantly below the 21st-century average of 69%. 

One of the largest uninsured losses occurred in Myanmar and neighbouring countries, where only under $100m in losses were covered by insurers out of a total estimated economic cost of $12b.

Fatalities from natural disasters were also below the long-term average. 

At least 7,700 people were reported killed in the first half of 2025, compared to the 21st-century average of 37,250. 

The majority of the deaths—5,456—were attributed to the Myanmar earthquake.

Based on the first-half total, 2025 is already amongst the top 11 years for insured catastrophe losses. 

With historical data showing second-half losses averaging $78b over the past decade—and peaking at $164b in 2017—2025’s final tally could rank even higher depending on catastrophe activity in the coming months.