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Aon: $343 Billion in Global Weather-, Catastrophe-Related Economic Losses Reported in 2021, Up From $297 Billion in 2020

Report shows only 38 percent of natural peril losses were covered by insurance, an improvement from last year

CHICAGO, Jan. 25, 2022 /PRNewswire/ -- Aon plc (NYSE: AON), a leading global professional services firm, today published its 2021 Weather, Climate and Catastrophe Insight report, which evaluates the increasing frequency and severity of disruptive natural disasters and how their resulting economic losses are protected globally. This data serves as the foundation for insights that can help business leaders quantify and qualify catastrophe-related risk and assess how their organizations can increase resilience amid an increasingly volatile climate.

The report reveals a total of $343 billion in economic losses in 2021, $329 billion of which resulted from weather and climate-related events, making last year the third costliest year on record after adjusting for inflation. While losses were up from 2020, the number of notable disaster events slightly decreased, demonstrating the heightened costliness and severity of these events. Of the 2021 losses, only 38 percent were covered by insurance. Despite an increase in overall losses from 2020, the protection gap of economic losses not covered by insurance decreased from 63 percent to 62 percent in 2021.

"Clearly there is both a protection and innovation gap when it comes to climate risk," said Eric Andersen, president of Aon. "As catastrophic events increase in severity, the way that we assess and ultimately prepare for these risks cannot depend on solely historical data. We need to look to technology like artificial intelligence and predictive models that are constantly learning and evolving to map the volatility of a changing climate. With scalable solutions, we can help organizations make better decisions that make them more resilient as they continue to more frequently face interconnected and increasingly volatile risks."

Other key findings from the report include:

  • 401 notable disaster events were recorded in 2021, down from 416 in 2020
  • There were 50 instances of billion-dollar economic loss events, the fourth highest year on record, with only 20 of the events reaching the billion-dollar insured threshold
  • European floods in July were the costliest disaster on record for the continent at $46 billion
  • Wildfires increased in prominence as conditions have become more conducive for rapid fire spread, with the term "fire season" becoming officially outdated as the risk of dangerous wildfires is prevalent during the full calendar year
  • Germany, Belgium, Austria, Luxembourg and China recorded the costliest insurance industry events on record
  • 2021 was the world's sixth-warmest year on record with land and ocean temperatures at 0.84°C (1.51°F) above the 20th-century average
  • The hottest temperature ever reliably measured on Earth was unofficially recorded in Death Valley, California, United States on July 9, 2021 at 54.4°C (130.0°F)

"Many global communities are exposed to increasingly volatile weather conditions that are in part enhanced by the growing effects of climate change. This includes record-setting episodes of extreme temperatures, rainfall and flooding, droughts and wildfires, rapidly intensifying tropical cyclones and late season severe convective storms," said Steve Bowen, meteorologist and head of Catastrophe Insight at Aon. "We can no longer build or plan to meet the climate of yesterday. With physical damage loss costs rising, this is also leading to lingering global disruptions to supply chains and various humanitarian and other asset-related services. The path forward for organizations and governments must include sustainability and mitigation efforts to navigate and minimize risk as new forms of disaster-related volatility emerge."

The top 10 global economic loss events in 2021 were as follows:





Economic Loss
(USD billion)

Insured Loss
(USD billion)

08/27 -09/02

Hurricane Ida

U.S., Caribbean




07/12 – 07/18


Western & Central Europe




06/01 – 09/30

Seasonal Floods





02/12 – 02/20

Winter Weather (Freeze)

U.S., Mexico




01/01 – 12/31


United States




02/13 – 02/13

Fukushima Earthquake





04/05 – 04/08

Winter Weather

Western & Central Europe




12/10 – 12/12

Severe Weather

United States




06/17 – 06/25

Severe Weather

Western & Central Europe




01/01 – 12/31






All other events


~130 billion

~49 billion



343 billion

130 billion

The full report and a short video are available on Aon's interactive microsite. Along with this report, readers can access current and historical natural catastrophe data and event analysis at

About Aon
Aon plc (NYSE: AON) exists to shape decisions for the better — to protect and enrich the lives of people around the world. Our colleagues provide our clients in over 120 countries with advice and solutions that give them the clarity and confidence to make better decisions to protect and grow their business.

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Aon plc (NYSE: AON) exists to shape decisions for the better—to protect and enrich the lives of people around the world. Our colleagues provide our clients in over 120 countries with advice and solutions that give them the clarity and confidence to make better decisions to protect and grow their business. (PRNewsfoto/Aon plc)


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