Summer 2025 confirmed as UK's hottest on record
Summer 2025 has gone down in history—but not for the reasons we’d hope. The Met Office has confirmed what many of us already felt in our bones: it was the UK’s hottest summer ever recorded, with an average temperature of 16.1°C, smashing the 2018 record and pushing the legendary heat of 1976 out of the top five.
That’s not just trivia. That’s climate in crisis.
Four Heatwaves. Flash Floods. Hosepipe Bans. Welcome to the New Normal.
This summer delivered four separate heatwaves, scorching highs of 35.8°C in Kent, and some of the UK’s driest conditions in decades, especially in southern England. Rutland Water ran dangerously low. Hosepipe bans kicked in. Cities cooked in their own heat traps.
Then came the contrast: flash floods in July, Storm Floris in August with 80mph winds, and the unsettling see-saw of weather patterns we now know all too well. Climate extremes aren’t alternating—they’re stacking.
Climate Change: From Probability to Certainty
Let’s cut to it—this is no longer an anomaly. Met Office scientists estimate that summers as hot as 2025 are now 70 times more likely due to human-induced climate change. Let that land: seventy times more likely.
Even the sea played a role this year, with marine heatwaves pushing coastal temperatures up by as much as 3°C above normal, eliminating the usual cooling effect.
In plain terms? The planet is absorbing and trapping more heat—and it’s showing up in our weather, water, and wallets.
RealZero Isn’t Optional. It’s Urgent.
We founded RealZero because climate adaptation isn’t enough. We need to radically reduce emissions—real reductions, not offset excuses.
This summer proves that:
“Unprecedented” is becoming predictable.
“Natural” no longer means normal.
The fight for a liveable future is a now issue, not a next-generation one.
What Can You Do Today?
Measure what matters. Understand your real emissions—not just scopes 1 and 2, but scope 3 too.
Electrify everything you can. From heat to transport.
Switch to renewables. Not next quarter—now.
Cut the greenwash. Offsets aren’t a get-out-of-jail-free card. If it sounds too easy, it probably is.
Push for policy. This summer should be a wake-up call for regulators. Make noise.
Have a look at our 7 acts and start your journey today