Headlines

2025 will be world's second or third-hottest year on record, EU scientists say

Published by Global Banking & Finance Review

Posted on December 9, 2025

2 min read

· Last updated: January 20, 2026

Add as preferred source on Google
2025 will be world's second or third-hottest year on record, EU scientists say
Global Banking & Finance Awards 2026 — Call for Entries

By Kate Abnett BRUSSELS, Dec 9 (Reuters) - This year is set to be the world's second or third-warmest on record, potentially surpassed only by 2024'S record-breaking heat, the European Union's

2025 Expected to Be Among Hottest Years, EU Scientists Report

By Kate ‌Abnett

BRUSSELS, Dec 9 (Reuters) - This year is set to be the world's second or third-warmest ‍on record, ‌potentially surpassed only by 2024'S record-breaking heat, the European Union's Copernicus Climate Change Service (C3S) said ⁠on Tuesday.

The data is the latest from ‌C3S following last month's COP30 climate summit, where governments failed to agree to substantial new measures to reduce greenhouse gas emissions, reflecting strained geopolitics as the U.S. rolls back its efforts, and some countries seek ⁠to weaken CO2-cutting measures.

This year will also likely round out the first three-year period in which the average global temperature ​exceeded 1.5 degrees Celsius (2.7 degrees Fahrenheit) above the 1850-1900 pre-industrial ‌period, when humans began burning fossil fuels ⁠on an industrial scale, C3S said in a monthly bulletin.

"These milestones are not abstract – they reflect the accelerating pace of climate change," said Samantha Burgess, strategic lead for climate at ​C3S.

Extreme weather continued to hit regions around the globe this year. Typhoon Kalmaegi killed more than 200 people in the Philippines last month. Spain suffered its worst wildfires for three decades because of weather conditions that scientists confirmed were made more likely by climate change.

Last year ​was the ‍planet's hottest on record.

While natural ​weather patterns mean temperatures fluctuate year to year, scientists have documented a clear warming trend in global temperatures over time, and confirmed that the main cause of this warming is greenhouse gas emissions from burning fossil fuels. 

The last 10 years have been the 10 warmest years since records began, the World Meteorological Organization said earlier this year.

The global threshold of 1.5 Celsius is the ⁠limit of warming which countries vowed under the 2015 Paris climate agreement to try to prevent, to avoid the worst consequences of warming.

The ​world has not yet technically breached that target - which refers to an average global temperature of 1.5 Celsius over decades. But the U.N. said this year that the 1.5 Celsius goal can no longer realistically be met and urged governments to ‌cut CO2 emissions faster, to limit overshooting the target.

C3S's records go back to 1940, and are cross-checked with global temperature records going back to 1850.

(Reporting by Kate Abnett; Editing by Michael Perry)

Key Takeaways

  • 2025 may be the second or third hottest year globally.
  • EU's Copernicus Climate Change Service provides the data.
  • Global temperatures continue to exceed 1.5°C above pre-industrial levels.
  • Extreme weather events linked to climate change are increasing.
  • The 1.5°C goal from the Paris Agreement is unlikely to be met.

Frequently Asked Questions

What is climate change?
Climate change refers to significant changes in global temperatures and weather patterns over time. It is primarily driven by human activities, particularly the burning of fossil fuels, which increases greenhouse gas emissions.
What is greenhouse gas emissions?
Greenhouse gas emissions are gases released into the atmosphere that trap heat, contributing to the greenhouse effect. Major greenhouse gases include carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O).
What is the Paris Agreement?
The Paris Agreement is an international treaty adopted in 2015 aimed at reducing greenhouse gas emissions and limiting global warming to well below 2 degrees Celsius above pre-industrial levels.
What is the significance of the 1.5 degrees Celsius threshold?
The 1.5 degrees Celsius threshold is a key target set in the Paris Agreement to prevent severe climate impacts. Exceeding this limit could lead to catastrophic environmental changes.
What are extreme weather events?
Extreme weather events are severe or unusual weather conditions, such as hurricanes, floods, droughts, and heatwaves, often intensified by climate change.

Tags

Related Articles

More from Headlines

Explore more articles in the Headlines category