Gallagher Re natural catastrophe and climate report 2025

The report provides a global overview of natural catastrophe activity in 2025, highlighting the implications for disaster risk reduction as climate‑driven volatility, shifting hazard patterns, and rising economic exposure continue to reshape risk profiles. Drawing on global datasets, regional recaps, climate diagnostics, and emerging analytical tools, including the growing role of artificial intelligence in forecasting, the publication outlines where major loss events occurred, when key climate anomalies emerged, and for whom these findings matter, notably (re)insurers, governments, emergency managers, and private‑sector decision‑makers.

The report recommends strengthening strategic investment in adaptation, mitigation, and resilience to address increasingly complex and non‑linear hazard behaviour. Lessons learned emphasise the importance of integrating physical and transition risks into decision‑making, improving the use of advanced analytics and AI while recognising their limitations, and enhancing cross‑sector collaboration to reduce the protection gap. The publication concludes that sustained innovation, improved data quality, and coordinated global efforts are essential to manage escalating climate‑related risks and safeguard communities, economies, and insurance systems.