United Kingdom Records Hottest May Day on Record as Temperatures Exceed 34 Degrees Celsius

The United Kingdom experienced its hottest May day on record, with temperatures surpassing 34 degrees Celsius. This follows the nation’s warmest May night on Sunday, when the mercury reached 19.4 degrees Celsius.

Record-Breaking Heat

The new high-temperature benchmark was set on Monday, May 25, 2026, surpassing previous May records. The reading of 34 degrees Celsius marks an unprecedented level of heat for the month of May in the UK.

Overnight Temperatures

Sunday night set a separate record as the warmest May night ever recorded in the UK, with temperatures holding at 19.4 degrees Celsius. This unusually high overnight minimum contributed to the sustained heat wave conditions across the country.

Climate Data Context

The May 2026 records add to a growing body of climate data showing rising temperature extremes in the UK. Meteorological officials have noted the increasing frequency of such high-temperature events during traditionally cooler spring months.

Context

Similar record-breaking heat events have occurred in other European countries during spring months in recent years, including a May 2023 heat wave in Spain that saw temperatures exceed 40 degrees Celsius. The UK also recorded its highest-ever June temperature of 40.3 degrees Celsius in July 2022.