England Heat Deaths on Track to Hit Record High This Summer 2026

England is on track for its highest ever number of heat-related deaths this summer, with official data showing 2,877 people have already died in May and June heatwaves. This alarming figure, released by the UK Health Security Agency (UKHSA), is nearly double the total for the entire summer of 2025. As August approaches, the risk of surpassing the 2022 record of 2,985 deaths grows, underscoring the urgent need for heat preparedness.

Record Heatwave Mortality: What the Data Shows

The UKHSA analysis estimates that 753 deaths occurred during the heatwave from 24 to 27 May, and a further 2,124 deaths between 21 and 28 June. These figures are based on excess mortality calculations, comparing death rates during heatwaves to similar periods without extreme heat. The health secretary, Yvette Cooper, expressed condolences, saying, “My thoughts are with all those who have lost loved ones as a result of the long and intense heatwaves.”

This summer’s heatwave mortality is already close to the 2022 record, and with August historically being the hottest month, the numbers could climb even higher. The UKHSA’s estimate is consistent with a previous analysis from July 13, which used a different methodology based on historical heat-mortality links. Both approaches confirm that heat is a deadly threat.

Climate Change and Super El Niño: A Dangerous Combination

Heatwaves are becoming more intense and frequent due to the fossil-fuel-driven climate crisis. The late June heatwave that affected western Europe was the most severe and widespread ever recorded. Additionally, a looming super El Niño weather system is expected to exacerbate heat in 2027, pushing temperatures even higher until carbon emissions reach net zero.

Dr Ross Thompson, principal environmental public health scientist at UKHSA, warned, “The new figures highlight the significant danger that very hot weather can pose to people’s health. As the climate becomes warmer, we can expect periods of hot weather to become longer, more frequent and more extreme.” This makes it vital for individuals, communities, and systems to adapt and protect the most vulnerable.

Heat-Related Deaths Comparison: 2022 vs 2025 vs 2027

Key Takeaways for Heat Safety

• Stay hydrated and avoid outdoor activities during peak heat hours (11am-3pm).
• Check on elderly neighbors and those with pre-existing health conditions.
• Use fans or air conditioning, and close curtains during the day to keep rooms cool.
• Recognize symptoms of heat exhaustion: dizziness, nausea, and confusion.
• Follow UKHSA guidance and local heat-health alerts.

Impact on the NHS and Public Health

Health secretary Yvette Cooper noted that this summer’s heat is having “an increasingly serious impact on the health of thousands of people, and on the pressures facing our NHS.” The surge in heat-related illnesses is straining emergency services, with more admissions for dehydration, heatstroke, and cardiovascular issues. Hospitals are implementing heat protocols, but prevention is key.

Public health experts urge the government to accelerate climate action and improve heat adaptation plans. This includes urban greening, better building insulation, and early warning systems. As Dr Thompson emphasized, preparation is essential to reduce mortality.

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