The World Weather Attribution Annual Report 2025
Kartavya Desk Staff
Context: The World Weather Attribution (WWA) Annual Report 2025 warns that climate change-driven extremes in 2025 pushed millions of people close to the limits of adaptation, despite La Niña conditions.
About The World Weather Attribution Annual Report 2025:
What it is?
• World Weather Attribution (WWA) is an international scientific collaboration that analyses how human-induced climate change influences extreme weather events such as heatwaves, floods, storms, droughts and wildfires.
Key findings (2025):
• Heatwaves intensified sharply: Heatwaves since 2015 have become significantly more intense, with some events nearly 10 times more likely, showing that even small increases in global temperature have outsized impacts.
• Crossing the 1.5°C threshold: The three-year global average temperature is projected to cross the 1.5°C limit for the first time, despite 2025 being a La Niña year, underlining the strength of long-term warming trends.
• Limits of adaptation reached: Several extreme events revealed that adaptation measures are no longer sufficient for vulnerable populations, especially in the Global South.
• Inequality in climate impacts: Marginalised communities were systematically the worst affected, while data gaps and weak climate models limited analysis of many Global South events.
• Extreme event profile (2025): 157 humanitarian-impact events identified Heatwaves and floods (49 each) most frequent Storms (38), wildfires (11), droughts (7) Heatwaves emerged as the deadliest hazard, with tens of thousands of deaths in single events.
• 157 humanitarian-impact events identified
• Heatwaves and floods (49 each) most frequent
• Storms (38), wildfires (11), droughts (7)
• Heatwaves emerged as the deadliest hazard, with tens of thousands of deaths in single events.
Relevance for UPSC Exam Syllabus:
• GS Paper I (Geography):
• Climate change impacts on weather patterns, heatwaves, floods, droughts Regional vulnerability and human geography dimensions of climate extremes
• Climate change impacts on weather patterns, heatwaves, floods, droughts
• Regional vulnerability and human geography dimensions of climate extremes
• GS Paper III (Environment, Disaster Management):
• Climate change and extreme weather attribution Limits of adaptation vs mitigation debate Disaster risk reduction and climate resilience
• Climate change and extreme weather attribution
• Limits of adaptation vs mitigation debate
• Disaster risk reduction and climate resilience