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

by | Aug 15, 2026 | Health

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

Data from 33 NHS trusts in England revealed that hospital ward temperatures during July averaged 31.9C, surpassing the 28C threshold recommended by NHS England for safe patient and staff conditions. The Northern Care Alliance NHS foundation trust, operating four hospitals in Greater Manchester, documented a temperature of 41.8C during the previous month’s heatwave, approximately 14C above the advised safe maximum.

Operating theatres proved particularly vulnerable to extreme heat, with cooling units failing due to exposure to high temperatures. These failures resulted in numerous planned surgical procedures being rescheduled across affected facilities. Additionally, some patients independently cancelled their scheduled surgeries due to concerns about traveling in the intense heat.

Healthcare organizations implemented various adaptations to manage the conditions. Hospitals and general practitioner surgeries began scheduling appointments for elderly patients during cooler morning and evening hours. Ambulance services encountered challenges maintaining proper medication temperatures in vehicles and adjusted staff dress codes to permit lighter clothing. Some trusts rented hundreds of air conditioning units to maintain cooler environments.

The Liberal Democrats, who obtained the data through freedom of information requests, called for systemic changes to address the vulnerability of healthcare facilities. The party proposed establishing an “NHS rapid adaptation unit” to implement cooling infrastructure, including mandatory air conditioning in care homes and facility upgrades to withstand future heatwaves. Healthcare staff organizations attributed the widespread challenges to aging infrastructure and insufficient long-term investment in NHS buildings, which they argued lacked capacity to withstand elevated temperatures.

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