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New polling by More in Common shows that 86% of the UK public believe climate change to be either entirely or partially responsible for the June 2026 heatwave. This holds true even for those opposing net zero, with 63% of them seeing climate change as at least in part to blame for the extreme heat.
At the same time, more than 4 in 5 think the UK is unprepared to cope with extremely hot weather (84%) and more than 3 in 4 see the country as ill-equipped to deal with water shortages and drought (77%).
Asked about which groups they think are most negatively affected by extreme heat, the elderly (88%) and children (68%) were seen as worst impacted, closely followed by “ordinary people” (66%).
Describing the most recent heatwave in their own words, responses revealed a public struggling to cope, with words like “hot”, “worried”, “unbearable” and “uncomfortable” being mentioned most often:
Relatedly, the majority expect more political leadership on the issue: 59% of the public say they want the government to help people like them cope with the impacts of extreme heat, compared to 26% who think the government should do the same amount and only 5% who say the government should do less to help people like them cope.
More than 40,000 extra people died on England’s hottest days between 1988 and 2025 compared with what would be expected in normal temperatures, according to new ONS data.
Deaths from high heat are expected to keep climbing as climate change and an ageing population combine, with older people, children and the unwell most at risk.
The strain has been visible across the health system: A&E departments saw their busiest period on record, with almost 2.5 million attendances a month in May, June and July, with record-breaking heat cited as a key factor. Nurses reported collapsing on shift amid what their union called “inhumane and impossible” conditions.
YouGov’s long-term data tracking shows an uptick in the belief that ‘the environment’ is one of the UK’s most important issues, amidst a summer of unprecedented heat, fires and drought. Although this increase does not match high points across the trend line, or the impact of summer heat episodes between 2022-2024.
The importance Britons placed on ‘the environment’ rose +11% across this summer – from 14% on the 4th May (pre-heatwaves) to a peak of 25% on the 17th of August, before dropping slightly again to 23% on the 24th of August.
These shifts have been particularly noticeable amongst Lib Dem supporters (+17%, from 23% to 40% in the same period), Labour supporters (+15%, from 22% to 37%) and women (+14%, from 15% to 29%).
This data follows a piece by YouGov published after the June summer heatwave, which suggested that the heat had not impacted people’s climate opinions or actions, despite 71% believing the heatwave was likely to have been caused by climate change.
While this certainly appeared true at the time – the latest data suggests this piece may have been premature in catching the full effects of the extreme heat on environmental salience this summer (especially when previous weather extremes have led to spikes in issue salience data).
