Extreme heatwave forces over 700 schools to close across Wales

As Wales grapples with record-breaking temperatures, over 700 schools have closed or altered schedules, sparking debates on safety and preparedness.

Wales is experiencing an unprecedented heatwave, with temperatures soaring to 37°C and forcing over 700 schools to close or adjust their schedules. The extreme conditions have prompted widespread discussions about safety, infrastructure, and the impact on education and daily life.

The Met Office has issued a red extreme heat warning, which remains in effect until 23:59 on Thursday, June 28, 2026. This warning covers large parts of Wales, including Blaenau Gwent, Bridgend, Caerphilly, Cardiff, Carmarthenshire, Merthyr Tydfil, Monmouthshire, Neath Port Talbot, Newport, Powys, Rhondda Cynon Taf, Swansea, Torfaen, and Vale of Glamorgan.

School closures and safety concerns

School leaders across Wales have taken the decision to shut buildings or finish early to protect pupils and staff from the potentially dangerous temperatures. The Welsh Government has issued guidance urging schools and councils to prioritise safety, particularly for younger children and those with medical needs.

Recommendations include relaxed uniform policies and increased access to drinking water.

However, the situation has sparked debate among parents and educators. Some question the variability in responses between different areas, while others argue that the measures are necessary to protect health and wellbeing during extreme weather. Commenters have highlighted the challenges faced by working parents who rely on schools and nurseries for childcare.

Infrastructure and preparedness

Mary Gagen a climate scientist from Swansea University has described Wales as “absolutely not prepared” for the consequences of extreme heat. She noted that while heatwaves have always occurred, their intensity and frequency are increasing due to climate change. Gagen emphasized the need for infrastructure that can cope with extreme temperatures, including cool spaces in cities and buildings designed to withstand heat.

The closures have also highlighted the challenges faced by ageing school buildings, which are not designed to handle extreme temperatures. Teachers’ unions have warned that many classrooms can become uncomfortable or even unsafe during prolonged hot spells. Experts from Swansea University have called for long-term investment in school buildings, including improved ventilation and evidence-based guidance on managing hot weather.

Community impact and safety measures

The extreme heat has caused disruption across various sectors, including public services and transportation. Transport for Wales (TfW) has cancelled services due to extreme heat and a shortage of trains, advising passengers to only travel if absolutely necessary. Meanwhile, Carmarthenshire council has urged residents to take extra care around water bodies, warning of the risks of cold water shock and hidden hazards.

Health officials have also issued warnings about the potential health effects of extreme heat. The chief medical officer for Wales, Isabel Oliver has advised people to stay hydrated, avoid alcohol, and look out for signs of heat exhaustion. Public Health Wales has urged people to check on vulnerable individuals, including those who work outdoors, live in top-floor flats, or are exposed to the heat for long periods.

As Wales continues to grapple with the heatwave, the situation serves as a stark reminder of the need for better preparedness and infrastructure to handle extreme weather events.