BRUSSELS — The United Nations’ top climate official is warning governments that political polarization around climate policy risks weakening action at a moment when rising temperatures, extreme weather and energy volatility are increasingly affecting inflation, public finances and national security.
Speaking before the European Parliament’s Committee on the Environment, Climate and Food Safety, UN Climate Change Executive Secretary Simon Stiell rejected efforts to frame climate policy primarily through partisan or cultural divides.
“Climate is sometimes seen as a partisan issue: as territory in culture wars. That is palpably false,” Stiell said, describing the climate crisis as a “continent-wide economic security emergency.”
His warning follows a punishing European summer marked by extreme heat, drought, wildfires and disruption to agriculture and infrastructure. Stiell cited a study estimating that this summer’s extremes could ultimately cost Europe €180 billion through lost labor productivity and disruption to food, energy and transport, equivalent to roughly one percentage point of European GDP.
Climate risk becomes economic policy
The warning reflects a broader shift in how governments are confronting climate risk: not simply as an environmental challenge, but increasingly as an issue of economic stability, energy security, sovereign resilience and the cost of living.
Europe is now facing pressure from both climate-related disruptions and continued exposure to volatile fossil-fuel markets. Extreme weather can damage crops, infrastructure and productivity, while energy shocks can feed inflation and increase costs for households and industry.
“Another European winter fuel crisis is looming,” Stiell warned, arguing that weaker climate action could leave governments more exposed to geopolitical energy shocks and higher costs.
That vulnerability has again come into focus as instability in the Middle East pushes energy prices higher. At the same time, climate risk is moving deeper into economic policymaking, with governments and central banks increasingly assessing how heat, drought and other extreme events can affect food prices, infrastructure costs and broader financial stability.
Record heat reinforces the warning
The economic warning comes alongside another significant climate milestone.
The EU’s Copernicus Climate Change Service reported that August 2026 was the warmest August globally on record and effectively tied July 2023 as the warmest calendar month ever recorded, with an average global surface temperature of 16.96°C.
The month was 1.65°C above the estimated pre-industrial average, marking the first month since November 2025 to exceed 1.5°C above that benchmark.
A single month above 1.5°C does not mean the Paris Agreement’s long-term temperature goal has formally been breached. But the increasing frequency of months approaching or exceeding that level underscores the pace of global warming.
Copernicus also found that the June-to-August period tied 2024 as the warmest boreal summer globally on record, while western Europe experienced its warmest summer in the dataset.
The political challenge
For governments, the challenge is increasingly about balancing the costs of transition against the mounting economic costs of delay.
Political resistance to climate policy is growing in several major economies, often around concerns over household affordability, industrial competitiveness and energy prices. But climate-related disasters can themselves reduce agricultural production, damage infrastructure, raise insurance costs and increase public expenditure.
Dependence on imported fossil fuels can further expose economies to geopolitical shocks and abrupt changes in commodity prices.
Stiell said renewables now provide around half of Europe’s electricity and that solar generation alone avoided more than €30 billion in gas imports during the first six months of the current Middle East conflict.
The economic case for climate action is therefore becoming increasingly tied to resilience: greater domestic clean-energy capacity can reduce exposure to volatile global markets while helping governments meet emissions targets.
A message ahead of COP31
The warning also carries implications beyond Europe as governments prepare for COP31 in Türkiye.
Stiell urged governments to focus on implementing existing climate commitments rather than reopening agreements already reached. He said current policies globally are putting the world on course for approximately 2.6°C of warming, still well above the Paris Agreement’s 1.5°C objective.
The broader message is that climate policy can no longer be treated as a siloed environmental issue. It is increasingly intersecting with inflation, fiscal policy, food security, energy independence, infrastructure and sovereign economic resilience.
“We live in a polarized age,” Stiell told lawmakers. “But inflation is a common enemy, security is a common cause.”
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