Schools across England and Wales closed on June 23, 2026, as the Met Office issued rare red extreme heat warnings, with temperatures forecast to reach 40°C in parts of both countries — a threshold that, if confirmed, would break June records, according to Reuters.

Red heat warnings are the Met Office's highest alert tier, reserved for events posing a significant risk to life. The agency has issued them only a handful of times, most notably during the July 2022 event when temperatures breached 40°C for the first time in recorded UK history. Reaching that threshold in June — a full month earlier in the calendar — would be a material shift in the seasonal envelope of extreme heat for the British Isles.

Across the Channel, France moved earlier and more decisively. Authorities ordered 845 schools to close as temperatures hovered around 40°C, according to AP News. The French government's school-closure framework, which links decisions to Météo-France alert levels and local prefectural authority, gave officials a relatively clear protocol to execute. The UK has no equivalent statutory mechanism.

That gap in governance was visible in the mixed messaging from London. The Department for Education advised schools they were not being directed to close, per guidance published on June 23, even as closures were already occurring on the ground, TES reports. In practice, the decision rested with individual headteachers and local authorities — the standard British model of school-level operational autonomy. That autonomy is well-suited to ordinary variation; it produces inconsistency precisely when coordinated action would matter most.

The broader meteorological picture is a fast-moving western European heat event. The system swept in from North Africa and the Iberian Peninsula, a trajectory now well-documented in the literature on amplified Rossby wave patterns. Climate attribution science has established that heatwaves of this magnitude are made significantly more probable by anthropogenic warming, though formal attribution for this specific event will take weeks.

For school operators and local authorities, the operational calculus on June 23 was straightforward: older school buildings in England and Wales — many dating to the Victorian era or post-war prefab construction — have essentially no mechanical cooling and can reach internal temperatures well above safe thresholds for children and staff within hours of the school day starting. The Health and Safety Executive's guidance on workplace temperature sets no upper legal limit, but the 2022 heatwave exposed the practical floor of what is workable in unventilated classrooms. Headteachers who closed were not acting contrary to the DfE's position so much as filling the space its non-directive guidance left open.

Looking at what this means structurally: the UK's decentralised approach to school heat management is likely to face renewed legislative scrutiny. Following 2022, there were parliamentary questions and a handful of select committee sessions on building standards and cooling requirements, but no statutory change resulted. A second event of similar severity within four years — and this one arriving in June rather than July — strengthens the hand of those arguing for minimum thermal comfort standards in school buildings and a clearer national trigger for coordinated closure decisions.

France's model is not without critics; centralised closure orders carry their own coordination costs for working parents and can be issued conservatively. But the 845-school figure released by French authorities at least reflects a single, accountable decision chain. That accountability is harder to trace when 20,000 individual school leaders in England and Wales are each making their own call against ambiguous national guidance.