Copernicus: August Global Heat Nears Paris Agreement 1.5°C Threshold

• August registered as the warmest August globally, matching July 2023's record, according to the Copernicus Climate Change Service.
• The month saw global average surface air temperatures reach 16.96 degrees Celsius, coinciding with Western Europe's warmest summer on record.
• Extreme heat and drought conditions across Europe led to critically low water levels in major rivers, disrupting industry and impacting nuclear power operations.
• For the first time since November 2025, August's global temperature surpassed the 1.5 degrees Celsius threshold above pre-industrial levels, a key target of the Paris Agreement.
• This record heat, alongside a new global sea surface temperature high, is linked to a powerful El Niño event strengthening and intensifying, and ongoing fossil fuel emissions.

This alarming development signifies a critical moment for the 2015 Paris Agreement, which aimed to limit global warming to below 1.5 degrees Celsius above pre-industrial levels.

August registered as the warmest August ever recorded globally, a finding from Europe’s climate monitor, the Copernicus Climate Change Service. This unprecedented heat matched July 2023 as the hottest month ever measured worldwide. The average global surface air temperature for August reached 16.96 degrees Celsius (67.92 degrees Fahrenheit). This extreme warmth signals a new phase of elevated temperatures, exacerbated by a powerful El Niño event strengthening and intensifying in the Pacific Ocean, which contributes additional heat to a planet already under stress from global warming driven by fossil fuel combustion.

This period also concluded Western Europe’s warmest summer on record, surpassing a previous benchmark established in 2003. Scientific analysis indicates that Europe is experiencing warming at a faster rate compared to other continents worldwide. The `Copernicus August global heat` data underscores the accelerating pace of climate change and its immediate effects.

Since May, Europe has been gripped by a series of dangerous heatwaves, resulting in severe drought conditions that stretched across a vast area from France and the United Kingdom eastward to Romania and Serbia in the Balkans. These `Europe record summer heatwaves` have had profound environmental and economic consequences.

These exceptionally dry conditions led to critically low water levels in several vital rivers, including the Rhine, Danube, Vistula, Southern Bug, and Dnieper, significantly disrupting river traffic essential for factories in Germany and other regions. Additionally, the Seine, Rhône, Loire, and Glomma rivers recorded their lowest seasonal flows since data collection commenced in 1992, highlighting the severity of the `Rhine Danube low water levels` and other major waterways.

The scarcity of water had direct impacts on energy infrastructure; Hungary was compelled to implement emergency measures to sustain the operation of its crucial nuclear power plant due to the low Danube levels. In a neighboring development, Romania's sole nuclear power facility was forced to shut down entirely because of an insufficient supply of cooling water.

The extreme heat experienced in August pushed the global average temperature beyond a critical threshold, reaching 1.5 degrees Celsius (2.7 degrees Fahrenheit) above pre-industrial levels. This marks the first instance of such an exceedance since November 2025. Specifically, the global temperature for August measured 1.65 degrees Celsius (2.97 degrees Fahrenheit) above pre-industrial benchmarks.

This alarming development signifies a critical moment for the 2015 `Paris Agreement`, which aimed to limit global warming to below 1.5 degrees Celsius above pre-industrial levels. Despite these international efforts to reduce carbon emissions, scientists are increasingly concerned that the planet is on a trajectory to surpass this crucial `Paris Agreement 1.5 C threshold` much sooner than anticipated, as global carbon emissions continue their upward trend.

Beyond the monthly record, the broader period from June to August also registered as the joint-warmest on record globally, aligning with temperatures observed in 2024. The planet had previously endured a prolonged spell of intense heat between 2023 and 2024, which was recognized as the hottest year on record, partly influenced by a preceding `El Niño climate change impact` weather pattern.

August further witnessed the average `Global sea surface temperature record` over the extra-polar ocean reach an unprecedented high. This phenomenon is directly linked by the agency to strong El Niño conditions prevalent in the Pacific Ocean and the ongoing warming attributed to the burning of fossil fuels. Samantha Burgess, Deputy Director of the Copernicus Climate Change Service, emphasized that these combined observations, including record global sea surface temperatures and Western Europe's warmest summer, vividly illustrate how climate change is intensifying extremes across both atmospheric and oceanic systems.

Source: Data provided by Copernicus Climate Change Service