This blog seems to be like Groundhog Day…….
Figures for the UK summer months show that the average mean temperature – which includes both day and night temperatures – was 16.5C, the warmest on record in a dataset going back to 1884.
It follows a spring and summer of persistent heat with five widespread heatwaves and no less then 40 days of temperatures above 30C (86F), smashing the previous record of 34 days!!
Record summer despite a cooler end to August
The UK weather was dominated by areas of high pressure throughout June, July and the start of August. Dry conditions and winds from continental Europe allowed temperatures to rise repeatedly.
While the second half of August brought a change in the pattern with cooler, wetter weather for many – overall temperatures have mostly remained around or above the seasonal norm – so the inevitable happened. Summer 2026 became the hottest on record.
A summer of persistent heat
The highest temperature recorded this summer was 38.1C (100.6F) at Kew Gardens in London on 13 August.
This was, provisionally, the UK’s fifth-hottest day on record in terms of maximum temperature, but it didn’t meet the all-time high of 40.3C (104.5F) measured at Coningsby, Lincolnshire in July 2022.
However, it is the persistence of the heat this spring and summer that is remarkable and has broken numerous records.
- A temperature of 30C or higher has been recorded on 40 separate days. The previous record was 34 days, set in 1995.
- A temperature of 35C or higher has been recorded on 10 separate days. The previous record was five days, set in 1976 and matched in 2020.
- A temperature of 35C or higher was recorded in four calendar months: May, June, July and August. The previous record was two calendar months.
- A temperature of 37C or higher has been recorded on three separate days, which is a new record. 37C+ has only been recorded nine times in the UK – three of which have occurred this year.
There have been five widespread heatwaves, including one at the end of meteorological spring which broke the UK’s May temperature record by more than 2C.
Another in June broke the temperature record for that month too – with Lingwood, Norfolk reaching 38.0C on 26 June. The previous June high was 35.6C, in the historic summer of 1976.
July and August brought further heatwaves – including one that lasted for three weeks in some locations and another which delivered the highest temperature of the year.
The intense heat occurred partly because of how dry it was for much of the summer – with some areas seeing no measurable rainfall for more than two months, external.
Drought was declared in all of Wales and more than two-thirds of England and wildfires caused devastation in parts of the country.
However, rain did fall in early June and wet weather returned in the second half of August, bringing some flash flooding.
Sheffield recorded over a month’s worth of rain in the week of 24-30 August – more than the city had seen across the rest of the season combined.
UK weather is now happening in a warming climate
The Met Office say the average temperature was made around 130 times more likely due to human-induced climate change.
And step back from this summer and there is clue to our changing climate in the temperature record itself.
In a climate that isn’t changing, new records should become progressively rarer, because every time a record falls, it raises the bar for the next one.
Now look at the UK summer temperature record. Until last year, the four hottest summers on record were separated by just five hundredths of a degree.
Then 2025 beat the previous record by 0.34C. And this summer has beaten that new record by another 0.40C.
So after years when the record moved by tiny fractions, in just two summers the bar has been raised by 0.74C.
Head of Climate Attribution at the Met Office, Dr Mark McCarthy said that summer 2026 was “remarkable” and we can expect to see extremes occurring more frequently in the future because of climate change.
So why is this happening so quickly here? The UK sits on the western edge of Europe, the fastest-warming continent on Earth – warming at roughly twice the global rate.
There are a few reasons for that. Land heats up faster than the oceans, parts of Europe stretch into the rapidly warming Arctic, and changes in weather patterns have favoured more frequent and intense summer heatwaves.
Scientists are still working out exactly how much each factor contributes, but the result is clear: the background climate in which British weather happens is getting warmer.
None of this means the UK will break its summer record every year. Weather will always give us cooler summers as well as hotter ones. But the pattern is becoming unmistakable: records that once marked the extreme edge of the UK’s climate are being overtaken with remarkable speed.
So the question is not whether the UK will experience summers hotter than this one. It is how often they will come – and how much hotter they might be.
Be prepared.
