‘Dangerously hostile’: heatwaves leave hospital wards unsafe, data reveals

by | Aug 19, 2026 | Health

‘Dangerously hostile’: heatwaves leave hospital wards unsafe, data reveals

Data obtained by 33 NHS trusts in England revealed significant temperature challenges across hospital facilities during the most recent summer heatwave. The Northern Care Alliance NHS foundation trust, which operates four hospitals in Greater Manchester, documented a peak temperature of 41.8C—exceeding the NHS England recommended safe maximum of 28C by a substantial margin.

Temperature monitoring across responding trusts showed ward temperatures during July averaged 31.9C, above the guidance threshold intended to protect both staff and patient safety. The elevated heat levels forced some hospitals to cancel surgical procedures after operating theatre cooling systems malfunctioned due to heat exposure. Multiple trusts were compelled to reschedule planned surgeries as a result, though the total number of affected facilities among England’s 205 NHS trusts remained unspecified.

The operational challenges extended beyond cancelled procedures. Ambulance services encountered difficulties maintaining appropriate temperatures for medications in vehicles, while some patients opted to cancel their own appointments due to travel difficulties in extreme heat. Hospitals and general practices began scheduling appointments for elderly and frail patients during cooler parts of the day. Staff dress codes were relaxed in some ambulance services to help personnel manage the conditions, and at least one trust rented approximately 600 air conditioning units to address cooling needs.

Health sector representatives attributed the infrastructure struggles to aging hospital buildings inadequate for managing sustained high temperatures. Reports indicated that some nursing staff experienced fainting episodes related to workplace heat exposure. The Liberal Democrats called for a dedicated “NHS rapid adaptation unit” to implement cooling infrastructure improvements, including mandatory air conditioning installation in care facilities and upgrades to NHS buildings designed to withstand future heatwaves.

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