Public Transport and Heatwaves in the UK
Public transport systems in the UK are increasingly susceptible to overheating during heatwaves, reflecting broader challenges posed by rising temperatures.
Climate Shifts and Temperature Increases
According to the latest Met Office report on the UK's climate, weather conditions once deemed extreme are now becoming the "new normal." The report reveals that the hottest day of the year in southern England is typically 4.56C warmer than during the period 1961-1990.
Scientists indicate that the UK's climate is "on the move," with northern regions experiencing warmer temperatures previously characteristic only of southern England.
Infrastructure such as homes, schools, hospitals, and transport networks are struggling to manage consecutive heatwaves this summer, highlighting the nation's lack of preparedness for ongoing climate change.
"We are right now living in a time of historic and unprecedented change, and in terms of temperature, on annual, seasonal, monthly and daily timescales, this evidence shows the climate of the 20th Century has now gone," said Mike Kendon, Met Office climate information scientist.
Record-Breaking Warmth in 2025
The report confirmed that 2025 was the warmest year on record since data collection began in 1884, underscoring the tangible effects of climate change.
Between 2016 and 2025, average temperatures were 1.336C warmer than the 1961-1990 baseline. Even seemingly modest rises in average temperature can significantly increase the frequency of extreme temperature spikes.
Focusing on temperature extremes, the report notes that these events often have the most profound impact on populations.
For Greater London, the number of days exceeding 306C and nights above 186C has more than quadrupled during 2016-2025 compared to 1961-1990.
Amber alerts have been issued during heatwaves this year warning people about the dangers of heat.
Emergence of New Warmer Climates
In the southeast of England, "we are seeing the emergence of new warmer climates," explained Kendon.
Simultaneously, regions such as the Vale of York and Lancashire now experience temperatures similar to those recorded in Greater London during 1961-1990.
"Think of this warming as moving north and uphill," Kendon explained, highlighting the loss of the coldest habitats from mountain summits in the UK.
Impact of Extreme Heat This Summer
This summer, many parts of the UK endured days of above-average temperatures combined with high humidity.
Experts from Imperial College London, the Met Office, and the London School of Hygiene and Tropical Medicine estimate that over 2,700 people may have died from heat-related causes in England and Wales during the exceptionally hot weather in May and June.
Water Availability and Drought Frequency
The scientists also evaluated water availability during spring and summer, alongside drought frequency.
In spring 2025, most of England and Wales received less than half the average rainfall recorded from 1991 to 2020. England experienced its driest spring in over a century.
From March to August 2025, the total volume of water flowing through rivers in England was the second lowest since 1961.
While climate change is expected to increase severe winter rainfall and flooding in the UK, hotter and drier summers are projected to cause more severe droughts in the future.
Effects on Soil and Agriculture
Reduced rainfall also impacts soil conditions and food production.
In 2025, soils across central and southern England were drier than average for the time of year by late June.
Dry soil can stunt plant growth, which in turn affects animals and birds dependent on these plants for food, as well as the success of food crops.
Parched landscapes increase wildfire risks, and dry soil heats more rapidly, potentially amplifying heatwaves.
UK's Increasing Summer Temperatures and Preparedness
The UK's summers are becoming hotter, raising questions about the nation's readiness to handle these changes.
Temperature records are not only being broken but significantly surpassed.
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Further information and analysis on climate change impacts and adaptation strategies are available through various resources.
