Met Office climate scientists have confirmed that Summer 2025 is officially the warmest Summer on record, with the mean temperature from June 1st to August 1st calculated at 16.10°C, which stands at 1.51°C above the meteorological average. This now means that all five of the warmest Summers on record have occurred since the year 2000, moving the Summer of 1976 down to sixth.
Summer 1976 maintains the title of the ‘highest average Summer maximum temperature’ with sixteen days exceeding 32°C compared to nine in the UK, however the persistent warmth of 2025 has resulted in the highest mean temperature to date.
The cause of this extended period of exceedingly warm temperatures has been put down to several factors; including a high-pressure system being dominant over UK weather systems, a significant marine heatwave to the South and also climate change. The UK is estimated to be warming at a rate of 0.25°C per decade, with a Summer as warm or warmer than 2025 now being 70 times more likely than it would be in a ‘natural’ climate system, with no greenhouse gas contributions from human activity.
Rainfall remained below average in 2025, occurring at only 84% of the seasonal average recorded, however it has varied significantly across different regions of the UK. Storm Floris brought strong winds and heavy rainfall, particularly to Northern Scotland in the early parts of August, with gusts of over 80mph and 50,000 homes losing their access to power.
This trend of increasingly frequent warm Summers and extreme weather events leads to a growing awareness and concern over climate change risks, emphasising the need for a move towards a renewable society as temperatures get warmer and the consequences become more severe. As a growing developer within the industry, CWP Energy are proud to be a part of this transition to a greener planet; protecting our climate and delivering a safer future.