BRUSSELS/LONDON – With the world experiencing its warmest January on record, earth has for the first time endured 12 consecutive months of average temperatures 1.5 deg C hotter than the pre-industrial era, the European Union’s climate change monitoring service said on Feb 8.

Already, 2023 was the planet’s hottest year in global records going back to 1850, as human-caused climate change and El Nino – the weather pattern that warms the surface waters in the eastern Pacific Ocean – pushed temperatures higher.

“It is a significant milestone to see the global mean temperature for a 12-month period exceed 1.5 deg C above pre-industrial temperatures for the first time,” said Dr Matt Patterson, an atmospheric physicist at the University of Oxford.

The previous warmest January was in 2020, according to the Copernicus Climate Change Service (C3S) records, which go back to 1950.

In 2015, countries agreed at United Nations climate talks in Paris to keep global warming well below 2 deg C and aim to limit it to 1.5 deg C, a level regarded as crucial to preventing the most severe consequences.

The first 12-month period of exceeding 1.5 deg C does not yet mean the Paris goal has been missed, as the UN agreement refers to an average global temperature over decades.

But some scientists have said the 1.5 deg C aim can no longer realistically be met, and have urged governments to act faster to cut carbon dioxide emissions to limit the amount of overshoot of the target.

“Rapid reductions in greenhouse gas emissions are the only way to stop global temperatures increasing,” C3S deputy director Samantha Burgess said.

At the same time, economic weakness and political pressures are challenging government will to implement policies to curb greenhouse gases as politicians strive for re-election in a bumper year for democratic elections.

“We are heading towards a catastrophe if we don’t fundamentally change the way we produce and consume energy within a few years,” Denmark’s Global Climate Policy Minister Dan Jorgensen told Reuters.

“We don’t have long,” he said.

Could 2024 be even warmer?

Every month since June 2023 has been the world’s hottest on record, compared with the corresponding month in previous years.

United States scientists have said 2024 has a one-in-three chance of being even hotter than in 2023, and a 99 per cent chance of ranking in the top five warmest years.

El Nino began to weaken in January, and scientists have indicated it could shift to the cooler La Nina counterpart later in 2024.

Still, average global sea surface temperatures last month were the highest for any January on record.

While it is winter in the Northern Hemisphere, in parts of South America, experiencing the Southern Hemisphere summer, temperatures are blistering.

Argentina endured a heatwave between Jan 21 and 31, while the Chilean capital of Santiago registered its third-hottest temperature on record on Jan 31, climbing above 37 deg C.

Such heat in central Chile caused wildfires that killed at least 131 people in early February. REUTERS