The United Kingdom recorded its highest May temperature on record Monday, with Kew Gardens in southwest London reaching 34.8 °C [1].
This extreme spike in temperature marks a significant departure from seasonal norms and highlights the increasing volatility of British spring weather. The heat arrived just days after Scotland experienced temperatures as low as -5 °C [4] and daytime highs of about 14 °C [5].
The Met Office said the peak reading at Kew Gardens exceeded the previous highest May temperature in the UK by two degrees Celsius [2]. The surge began earlier in the week, with Kew Gardens recording 32.3 °C on Sunday [6].
A strong high-pressure system pushed unusually hot air across the region, prompting the Met Office to issue heat-wave warnings. Santon Downham in Suffolk/Essex was the first location to reach heatwave conditions at around 11:30 a.m. on Monday [3].
While some forecasts predicted temperatures would hit a historic 35 °C [7], the maximum recorded temperature was 34.8 °C [1]. The heat-wave conditions primarily affected the South and South-East of England, where the high-pressure system remained anchored.
Met Office officials said the event was a record-breaking bank holiday. The agency monitored the South and South-East closely as the temperature climbed toward the 35 °C mark [7].
“exceeding the previous highest May temperature in the UK by a full 2 degrees Celsius”
The occurrence of a record-breaking heatwave in May, immediately following near-freezing temperatures in Scotland, underscores a pattern of extreme weather oscillations in the UK. When a high-pressure system traps hot air in the south while the north remains cold, it creates sharp thermal gradients that can strain public health infrastructure and agricultural planning during the critical spring growth period.
