Britain has officially broken the 50-year-old record for the most days exceeding 30 degrees Celsius (86 degrees Fahrenheit), a milestone previously held by the notable summer of 1976.
Scientists at the University of Reading have recorded 15 days with temperatures above 30°C so far this year, surpassing the previous record of 14 such days set in 1976. The University of Reading's Atmospheric Observatory has been collecting temperature data since 1908, and this year marks the first time the 1976 record has been surpassed. Prior to this year, only four years since 1908 had recorded 10 or more days above 30°C. The observatory first registered a day over 30°C on May 24, reaching 30.8°C, and has since recorded another 14 days above this threshold, with the most recent on July 12 reaching 30.7°C.
This new record comes as the United Kingdom experiences a series of heatwaves, leaving much of the nation sweltering. Experts note that this trend indicates a significant shift in climate patterns, moving beyond mere warm spells. Summers with such intense heat and dryness, once considered rare, are now expected to become far more common, posing considerable public health risks.
Record-Breaking Temperatures and June's Heatwave
The Met Office has confirmed that the preceding month was England's hottest June on record, with an average temperature of 17.1°C. This exceptional warmth was largely due to a record-breaking heatwave at the end of the month, which also contributed to a number of 'tropical nights' where temperatures remained above 20°C. During this June heatwave, the highest temperature recorded was 37.7°C in Lingwood, Norfolk. The Met Office issued extreme heat warnings across large areas of the UK, and experts estimate that approximately 2,200 people died as a result of the heat during June.
Furthermore, 2026 has also become the first year on record where temperatures of 35°C have been recorded on six separate days in the UK. This surpasses the previous record of five such days, shared by 1976 and 2020.
Future Climate Projections and El Niño's Influence
Met Office projections suggest that heatwaves are likely to become more frequent in the UK's future climate, particularly in the southeast. While temperatures are expected to rise across all seasons, the most intense heat will likely occur during the summer months.
Adding to concerns about rising temperatures, experts have warned that a developing 'super El Niño' could bring even hotter conditions to the UK later in the summer. NASA satellites have confirmed the presence of this weather phenomenon, characterized by warmer-than-average sea surface temperatures in the equatorial Pacific. While El Niño events have diverse global impacts, including increased rainfall in the southwestern United States and drought in the western Pacific, they are also associated with extreme heat in many regions, potentially including the UK.
The prolonged heatwaves experienced in May and June are believed to have contributed to over 2,700 deaths, with a study from Imperial College London suggesting that nearly half of these fatalities were exacerbated by climate change. This highlights the growing concern that the UK is now experiencing summers that are dangerously hot and claiming thousands of lives.