Brits who lived through the summer of 1976 will likely never forget the scorched white grass or melting tarmac, but a conparible event today would be far more calamitous
Last week saw the UK swelter in an intense heatwave – the likes of which haven’t been seen since the notorious summer of 1976.
The historic scorcher fifty years ago brought with it 15 consecutive days of heat from June 23 to July 7, with temperatures reaching 32.2 °C (90 °F) in some parts of England. Tarmac famously melted on the roads and the grass turned stark white in the blistering conditions. Compounding the issue, the freak weather followed the year-long ‘drought of the century’, causing water shortages, wildfires and failed crops, costing farmers £500million.
Now, as air con units sell out online, and with more mercury-busting temperatures expected later this week, scientists have recreated the ’76 hot spell to find out how it really compares to the heat of today amid a continued global warming crisis.
Writing for The Conversation, climate science professors Ed Hawkins and Hayley J. Fowler explained that while the most recent heatwave didn’t last for as long as the 1976 heatwave, it was far more dangerous because the heat was so intense.
They write: “The upward shift in temperature from global warming has created more dangerous heatwave conditions. Hot daytime temperatures, coupled with very warm nights, making it hard to sleep, would cause huge health issues for vulnerable people, and reduced productivity even for healthy people.”
While global temperatures have risen by 1°C, the authors explain that this does not mean heatwaves will only become 1°C hotter. “Extreme heat is intensifying much faster than the average temperature, and since the 1960s, heatwaves in southern England have become 3°C or 4°C hotter in urban and rural areas alike,” they continued.
“Peak temperatures in today’s climate, for a comparable event to the 1976 heatwave, would be 38°C or 39°C. What is ‘normal’ has already changed. The climate of the past no longer exists. Summers in the UK have become hotter, and 2025 was the warmest on record. For now.”
The duo warns that last week was just the start and that one day, the babies of today will consider last week’s heatwave to be ‘cool’.
“With continued greenhouse gas emissions, UK summers will become hotter, with more frequent, more intense and longer heatwaves,” they warned. “Met Office climate model projections suggest the UK could begin to experience temperatures of 45°C within the next three decades, with plausible heatwaves hitting 40°C for over a week. Britain’s climate and its way of life will become unrecognisable.”
“To put this into perspective, when a child born today becomes a parent, the average temperatures of summer 1976 will be normal. When they become a grandparent, they will look back and think that the summer of 1976, or even the summer of 2025, were remarkably cold.
“UK society and the infrastructure on which it depends is built for a climate that no longer exists. It is urgent that it adapts to weather extremes happening already and those anticipated in the next few decades.”
According to the UK Health Security Agency (UKHSA), an estimated 10,781 heat-associated deaths in England were recorded as “a direct consequence of heatwaves” between 2020 and 2024. Without urgent adaptation, it’s projected that this figure will soar to approximately 11,000 fatal cases every single year by the 2050s.
Meanwhile, speaking to the Mirror previously, British Weather Services senior meteorologist Jim Dale warned Britain’s all-time temperature record of 40.3 °C, recorded during the July 2022 heatwave, could well be bested, with forecasts indicating highs of 41 °C within days.
This comes after Britain recorded its hottest June day in history on Friday, June 26, after temperatures soared to 37.7 °C in Lingwood, near Norwich. Meanwhile, the Mirror visited Andover in Hampshire, where temperatures were due to reach 38°C and residents were left struggling to keep cool with an infrastructure arguably unfit for our climate change reality.
Councillor Iris Anderson told the Mirror: “Things have got to change. Whether it’s how businesses operate, our working hours, or how we keep the shops open during such a global change. We need to start thinking seriously about the shop workers – how long they work for and serve customers. We also need to think about our nurses and doctors. It’s extremely hard in these hospitals, and they have to do their work and their duty.”
While the Met Office predict global average temperatures will likely remain at or stay close to record levels over the coming five years, Mr Dale fears the world is on track to reach 2 °C far sooner than anticipated. He explained: “The IPCC’s 1.5C threshold is dead in the water. 2C warming is the next staging post, and at this rate, it could happen by 2030, well ahead of most scientific expectations. The global fallouts from that would be immense.”
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