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Science 24 Jun 2026

Why this heatwave feels worse than the last one

A combination of factors is making this heatwave more uncomfortable than some we have had in the past, as Simon King explains

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A combination of factors is making this heatwave more uncomfortable than some we have had in the past, as Simon King explains June temperature records are set to be broken this week as the second heatwave of the year grips England and Wales. That's down to a combination of factors, an unrelenting heat dome, high humidity, and back-to-back tropical nights. The intense record-breaking heatwave in the UK and Europe has been caused by a static. And large area of high pressure, also referred to as a heat dome. This weather pattern results in air sinking down through the atmosphere, which compresses and heats up as it hits the ground. During the May heatwave the centre of the heat dome was over the UK. So the heat was able to build underneath it, rather than being pulled in from more humid places.

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