Summer 2026 expected to be declared UK's hottest on record

Summer 2026 expected to be declared UK's hottest on record There is something striking about the way the UK's summer temperature records are being broken. In a climate that is not changing, new records should become progressively rarer because each time a record falls, it raises the bar for the next one. Instead, five of the UK's hottest summers on record have occurred since 2000external. And until last year, the gaps between them were tiny: the four hottest were separated by just five hundredths of a degree. Then came 2025. The record jumped by 0.34 °C. Now, only a year later, it appears that record has been surpassed again. The term "Record‑shattering" sounds like the kind of phrase journalists would use. In fact, it is simply a word climate scientists employ for records broken by unusually large marginsexternal. Research suggests these large jumps become more likely if the climate is warming rapidly. 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 about twice the global rate. There are a few reasons for that. Land heats up faster than the oceans, parts of Europe extend into the rapidly warming Arctic, and shifts in wind patterns have favoured more persistent and intensified summer heatwaves. Scientists are still working out precisely how much each factor contributes, but the effect is clear: the baseline climate in which British weather occurs is getting warmer. None of this means the UK will break its summer temperature record every year. Weather will always produce cooler summers as well as hotter ones. But the trend is becoming unmistakable: records that once marked the outer limit of the UK's climate are being exceeded with remarkable speed. So the question is not whether the UK will experience summers hotter than this one. It is how often they will occur – and how much hotter they might become.