The United Kingdom experienced its hottest summer on record in 2026, marked by persistent heat and a significant number of days exceeding 30 degrees Celsius (86 degrees Fahrenheit). This period saw five widespread heatwaves and a total of 40 days with temperatures climbing above the 30C threshold.
This surpassed the previous record of 34 such days. The sustained high temperatures characterized both the spring and summer seasons, contributing to the record-breaking overall summer heat.