Summer 2024: coolest UK summer since 2015


The United Kingdom has experienced its most frigid summer in nearly a decade, according to data collected by the Met Office. The season has also been one of sharp contrasts, with northern and western regions of the country feeling cool and damp while the south and east have enjoyed more classical summer weather. On 12 August, temperatures in Cambridge climbed to 34.8°C, making it the hottest day of the summer. However, heatwaves were generally brief and sporadic.

This colder summer represents a reversal of recent trends. The last time the UK had a season as cool as this one was six years ago in 2015. For evaluating a season’s weather, the Met Office considers three key indicators, namely temperature, rainfall, and sunshine levels. Average temperatures were below the norm, with a mean daytime temperature of 14.37°C, 0.22°C lower than average. Overcast skies often made overnight minimum temperatures higher than normal, while daytime maximums were notably chilly.

Despite some years being cooler or warmer than average, the long-term trend on account of climate change is for temperatures to increase. In the UK, five of the ten warmest summers on record have occurred since 2000. As for rainfall, the summer as a whole was just 5% drier than average at 241.3mm. Some regions, such as Highland’s Achnagart, had their soggiest summer on record, with double the typical monthly rainfall in August, while others, particularly the Midlands, had just a third of their expected precipitation.

Many parts of the UK were under-clouded, so sunshine levels were low except in central and southern England and eastern Scotland. However, as the jet stream shifted north in the latter half of the season, things picked up with many regions drying out and warming up. It is unlikely that autumn will feature a prolonged heatwave such as the seven days of 30°C or more seen in September last year. However, September began with a 30°C reading in Wiggonholt, West Sussex, albeit with some thunderstorms also occurring, and high pressure will ensure fresh, dry weather for the next few days

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