Extreme Temperature Diary- Wednesday December 24th, 2025/Main Topic: United Kingdom on Track to Have Its Warmest Year on Record – Guy On Climate
Dear Diary. Yesterday we delved into the likelihood that the United States would see the warmest Christmas on record. Obviously, this is a sign of climate change. An even stronger marker is the near 100% likelihood that the United Kingdom will see its hottest year on record with accompanying drought.
With global average temperatures now hovering just south of +1.5°C above preindustrial conditions, we should see many more heat records and countries reporting their hottest year on record for 2026, much more so than in the recent past.
Here are more details from the BBC:
Rising temperatures in the UK will become "the new normal"
www.bbc.co.uk/news/article... — Dr Paul Dorfman (@drpauldorfman.bsky.social) 2025-12-24T12:45:36.549Z
2025 likely to be UK’s hottest year on record, says Met Office
‘This is our future,’ climate adviser warns as 2025 to break heat records12/23/2025
Mark Poynting Climate researcher
 Rising temperatures in the UK will become “the new normal”, a leading government climate adviser has warned, as she called for more to be done to prepare for the impacts of climate change.
It comes as the Met Office revealed 2025 was on course to be the UK’s hottest year since records began, with climate change continuing to drive higher temperatures.
With just over a week still to go, the average UK air temperature across 2025 is on track to end up at about 10.05C, which would edge out the current record of 10.03C from 2022.
“This is our future, encapsulated in data,” Professor Rachel Kyte told the BBC.
“Now the question is ‘how are we going to prepare ourselves and build our resilience to this?'”
A lack of rainfall and persistent warmth left the country vulnerable to droughts and wildfires through the spring and summer.
While temperatures vary naturally from year to year, scientists could not be clearer that human-caused climate change is driving the UK’s rapidly warming trend.
“The pollution [carbon dioxide] we’ve put in for the last 20-30 years is now what is driving this warmth, and so not curbing emissions well enough means we’re going to continue to see these kinds of impacts,” Prof Kyte, the UK’s special representative for climate, said.
She said the UK needed to become “resilient” to the inevitability of higher temperatures through further investment in nature and infrastructure.
“If we don’t invest in our adaptation now, it’s going to cost us way more,” she warned.
By the end of 2025, the UK’s 10 warmest years on record will all have taken place in the last two decades, in measurements going back to the late 1800s.
“Anthropogenic [human-caused] climate change is causing the warming in the UK as it’s causing the warming across the world,” said Amy Doherty, a climate scientist at the Met Office.
“What we have seen in the past 40 years, and what we’re going to continue to see, is more records broken, more extremely hot years […] so what was normal 10 years ago, 20 years ago, will become [relatively] cool in the future,” she told BBC News.
The Met Office’s projection uses observed temperatures up to 21 December and assumes that the remaining days of the year are 2C below the long-term December average, with slightly cooler conditions expected over Christmas.
So while the Met Office cannot say with certainty that 2025 will be the hottest year, it is the most likely outcome.
It would be the sixth time this century that the UK has set a new annual temperature record, following 2002, 2003, 2006, 2014 and 2022.
“The changes we are seeing are unprecedented in observational records back to the 19th Century,” said Mike Kendon, another climate scientist at the Met Office.
 The expected new record of 2025 has been built on persistent heat through the spring and summer.
Those long, hot, sunny days may feel like a distant memory as we head towards Christmas, but both spring and summer were the UK’s warmest ever recorded.
Each month from March to August was more than 2C above the long-term average between 1961 and 1990.
Temperatures peaked at 35.8C – well below the highs of more than 40C seen in July 2022 – but hot spells happened repeatedly.
Four separate – albeit relatively short-lived – heatwaves were declared across much of the country.
The UK Health Security Agency also issued several heat-health alerts through the summer.
Mr Kendon said longer spells of hotter days and nights posed an increased risk to elderly and vulnerable people.
He told the Today programme it would also have an impact on the agriculture sector, influencing which crops farmers are able to grow in the UK.
Record warm seas help to bring extraordinary new species to UK waters
Extreme weather is the UK’s new normal, says Met Office
Area burned by UK wildfires in 2025 already at annual recordSpring and summer were also marked by low rainfall. Spring was particularly dry – the UK’s sixth driest since 1836.
Combined with the warm weather helping to dry out the soils, this lack of rainfall pushed large parts of the country towards drought.
Through the summer, official droughts were declared across several regions in England and Wales, by the Environment Agency and Natural Resources Wales respectively.
Parts of eastern Scotland also entered “significant water scarcity”, according to the Scottish Environment Protection Agency.
 Recent rainfall has eased the situation across much of the country and most areas are no longer in official drought. But water levels are still below average in some places.
“There’s a huge deficit to be made up, and there’s a huge implication, not just for people who are farming the land [and] growing food, but our rivers, our aquifers, our availability of drinking water,” said Jess Neumann, associate professor of hydrology at the University of Reading.
The repeated swings between drought and flooding were making it very hard for communities to adapt to increasing weather extremes, she added.
The prolonged dry, warm weather created ideal conditions for wildfires too.
By late April, the area of the UK burned by wildfires had already reached a new annual record, according to data from the Global Wildfires Information System going back to 2012.
More than 47,100 hectares (471 sq km or 182 sq miles) has now been burned throughout 2025 – smashing the previous high of 28,100 hectares of 2019.
Andy Cole, chief fire officer at Dorset & Wiltshire Fire and Rescue Service, said firefighters in his region had responded to more than 1,000 wildfires this year – an “unprecedented” number, he said.
“I’ve been doing this for over 20 years and we’ve seen a marked increase in the number of fires we’re having to deal with in the open,” he told the Today programme.
As the UK continues to heat up – driven by humanity’s greenhouse gas emissions – scientists expect the UK to experience more weather extremes.
“The conditions that people are going to experience are going to continue to change as they have in the last few years [with] more wildfires, more droughts, more heatwaves,” said Dr Doherty.
“But also it’s going to get wetter in the winter half-year, so from October to March […] the rain that does fall will fall more intensely, and in heavier rain showers, causing that kind of flooding that we’ve been seeing this year as well,” she added.
The UK has not been alone in experiencing extreme heat this year. The world is on course for its second or third warmest year ever recorded, according to the European Copernicus climate service.
But the international consensus on tackling climate change is also being tested, with the US and some other leading producers of fossil fuels rowing back on their net zero commitments.
Additional reporting by Justin Rowlatt, Kate Stephens and Zahra Fatima
Here are some “ETs” recorded from around the planet the last couple of days, their consequences, and some extreme temperature outlooks, as well as any extreme precipitation reports:
Record highs yesterday (left) and today (right). Remarkable number of record highs. Some monthly records. Images via CoolWx — Jeff Berardelli (@weatherprof.bsky.social) 2025-12-24T01:42:51.238Z
My new video on climate rock star James Hansen’s work…
James Hansen Year-End Blog: Global Average Temperatures We Expect Over Next Couple Years
youtu.be/zZTBSixUj90?...
#ClimateCrisis #climate #globalwarming #weather #oceans #atmosphere #science #scientists — Paul Beckwith (@paulhbeckwith.bsky.social) 2025-12-22T20:27:16.313Z
There aren't a lot of resources for what people can do to prevent the destruction of NCAR, so I made this:
#NCAR #climate #climatescience #weather #meteorology #activism #myresources — Clarke Geagan (@clarkegeagan.bsky.social) 2025-12-23T06:55:52.290Z
We still live in an Ice Age.
Not a frozen planet, but a long rhythm of ice advance and retreat that began 2.6 million years ago.
The calm climate we know is an interglacial pause. Past changes unfolded over thousands of years.
Join the newsletter for more!
🧪 #SciComm #Climate
buff.ly/jMS0hrP — Silvia Pineda-Munoz, PhD - Climate Ages (@climateages.bsky.social) 2025-12-23T15:02:25.371Z
"Targeting a #climate resilient, sustainable world involves fundamental changes to how society functions, including changes to underlying values, worldviews, ideologies, social structures, political and economic systems, and power relationships" - @ipcc.bsky.social
www.ipcc.ch/report/ar6/w... — Dr. Aaron Thierry (@thierryaaron.bsky.social) 2025-12-24T10:17:10.110Z
"...the tragic reality is that we are going to face more and more climate disasters, some in effect fuelled by AI, and we may start to face more direct AI-induced disasters too."
Some thoughts on #AI and why it's the last thing #climate needs.
www.edp24.co.uk/news/2565188... — Rupert Read (@rupertread.bsky.social) 2025-12-22T13:02:09.412Z
OK so It’s Christmas Eve & petitioning Govt might not be front of mind today - but *please* take just 20 secs to sign this, calling for a funded national #climate resilience plan to help protect us all. Just 1700 more needed to get a Govt response! 🤞🙏https://petition.parliament.uk/petitions/730062 — Caroline Lucas (@carolinelucas.bsky.social) 2025-12-24T11:31:46.653Z
Climate breakdown, extinction, resource depletion, misinformation and conflict are not separate crises. Together they form a single human emergency that demands coordinated global action, writes @JulianCribb
#climate #environment #globalcrisis #future #auspol — Pearls and Irritations (@johnmenadue.com) 2025-12-21T22:31:00.888137+00:00
2 photos of the arctic both taken in the summer more than 70 years apart show the dramatic change in the continent ice cover.
There is no time to waste. No planet B. #ActOnClimate
#ClimateEmergency #climate #phaseoutfossilfuels #renewables #GreenNewDeal pic via @ChristianAslund — Mike Hudema (@mikehudema.bsky.social) 2025-12-22T19:07:02.580Z
Big storms slamming #California for the next 72 hours. Very rough to near impossible travel in higher Terrain. But much needed #snow for the Sierra-Nevada Ski Resorts, not to mention for the snowpack.
70 mph gusts and flooding in spots too. Stay safe all! #storm — Jeff Berardelli (@weatherprof.bsky.social) 2025-12-24T05:24:21.955Z
It’s wild!
-70°F in Canada today. The coldest December reading in 50+ years (since 1975!)
Meanwhile the US is En Fuego with 100s of record highs!
Dallas hit 81 today. And the contrast is huge, over 150°F across North America.
H/T 🎩 to @ThierryGooseBC — Jeff Berardelli (@weatherprof.bsky.social) 2025-12-23T21:41:25.197Z
Heads up! The coldest air of the season for many in #Florida arrives next week. This will be a prolonged event, from Tuesday through Saturday.
Here’s a look at wind chills New Year’s morning. Bundle up!! #cold #winter #newyear — Jeff Berardelli (@weatherprof.bsky.social) 2025-12-24T00:23:58.886Z
‘This is the Costco of energy, man!’: author Bill McKibben on the promise of renewables.
www.theguardian.com/environment/... — Dr Paul Dorfman (@drpauldorfman.bsky.social) 2025-12-24T12:44:57.951Z
This medical facility in Indiana got a #solarpower upgrade. It's the first carbon neutral medical facility in the state.
RT if you think more parking lots should go #solar.
We have the solutions. Implement them. #ActOnClimate
#climate #energy #renewables #panelsnotpipelines — Mike Hudema (@mikehudema.bsky.social) 2025-12-23T19:07:03.496Z
Half hour retail pricing cuts my electricity bills by a third! Plus: cheap heat pumps! and Plus: how Tory/Reform energy plans threaten British exports and public finances, by @DaveToke open.substack.com/pub/davidtok... — Dr Paul Dorfman (@drpauldorfman.bsky.social) 2025-12-24T12:46:38.672Z
The Parallel Universe of Small Modular Reactors (#SMRs).
#nuclear
bellacaledonia.org.uk/2025/12/08/t... — Dr Paul Dorfman (@drpauldorfman.bsky.social) 2025-12-24T12:25:51.359Z
Do what !
France enlists Russian state-owned company to help make #nuclear fuel in Germany www.politico.eu/article/fran... — Dr Paul Dorfman (@drpauldorfman.bsky.social) 2025-12-24T13:53:16.002Z
Radioactive water leak at decommissioned nuclear reactor in central Japan news.cgtn.com/news/2025-12... via @cgtnofficial — Dr Paul Dorfman (@drpauldorfman.bsky.social) 2025-12-24T12:42:59.175Z
"From Congo to Gaza, Sudan to West Papua, the same logic of resource-driven exploitation."
"[E]ntire peoples are sacrificed so corporations and states can gorge on what lies beneath their land."
#DRC #Gaza #Palestine #Sudan #WestPapua #Israel #EU #USA #Genocide #Mining #Forests #Climate #Military — Harms Committed (@harmscommitted.com) 2025-12-24T14:00:44.710Z
"[F]looding and fire relief request denial was part of Trump's larger efforts to retaliate against [.] Colorado."
"[R]etaliation for the conviction [.] of Tina Peters." "[P]art of an effort to prove the baseless claim that the 2020 election was stolen."
#Colorado #USA #Aid #Climate #Courts #Voting — Harms Committed (@harmscommitted.com) 2025-12-23T15:40:01.075Z
Protective shield built above the former Chornobyl Nuclear Power Plant could collapse following a Russian strike earlier this year, plant director Serhii Tarakanov
kyivindependent.com/chornobyl-pr... — Dr Paul Dorfman (@drpauldorfman.bsky.social) 2025-12-24T12:41:25.873Z
Ralph M Larmann, The Saturated Solution, 2017. Acrylic on canvas, 40 x 60 inches. Courtesy of the artist. #art #painting #artsky #flooding #sealevelrise #JacksonSquare #NOLA #catfish #Ralph #Larmann #Saturated #Solution #FrenchQuarter #hurricaneskies #toxicwaste #Evansville #Indiana #muddy #climate — Ralph M Larmann (@ralphmlarmann.bsky.social) 2025-12-22T12:59:34.783Z
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