The UK has already experienced multiple heatwaves in recent weeks, breaking long-standing temperature records and raising questions about what the rest of the summer may bring, with forecasters indicating a continued risk of further periods of intense heat through July and August.
Recent Heatwaves And Record Temperatures
Over the past two months, the UK has seen two separate heatwaves, both producing unusually high temperatures for the time of year and breaking records that had stood for more than a century.
One recent peak temperature of 35.1C was recorded in Kew Gardens, London, during a period dominated by a strong area of high pressure often described as a heat dome. The start of June then brought a sharp shift, with cooler and wetter conditions as Atlantic low pressure systems moved across the country.
Rainfall totals for the month were heavily concentrated in the early weeks, followed by a rapid transition back to hot and dry weather conditions.
Forecast Signals For The Rest Of Summer
Seasonal outlooks issued at the start of June suggested a higher probability of warmer-than-average conditions through the summer months. Forecast models indicate that July and August may continue to experience above-average temperatures, with repeated bursts of very warm weather possible across the UK and parts of Europe.
Meteorological agencies have also indicated that periods of extreme heat remain a possibility during the remainder of the summer season, which runs until the end of August.
Shifting Weather Patterns Across The UK
Weather patterns have moved between contrasting phases since May, alternating between dry high-pressure systems and wetter Atlantic-driven conditions. High pressure has been linked with extended spells of sunshine and rising temperatures, while low pressure systems have brought periods of cloud, rain and cooler air.
This variability has contributed to rapid changes in conditions over short time periods, including transitions from wet weather to heatwave conditions within days.
Longer-Term Climate Context
Scientific assessments indicate that the likelihood of hotter summers in the UK has increased compared with previous decades. Analysis from the Met Office suggests that temperatures above historical averages are now more frequent than in the late 20th century baseline period.
The UK recorded its first temperature above 40C in 2022, when 40.3C was measured in Lincolnshire, marking a new national record. Research also suggests that extreme temperature thresholds may be reached more regularly in future decades if current warming trends continue.
El Niño And Global Weather Patterns
The El Niño climate pattern has developed in the Pacific Ocean and is known to raise global average temperatures during its active phase. It typically occurs every few years and can influence weather patterns worldwide, although its direct connection to UK summer heatwaves is limited.
Climate scientists note that any effects from El Niño often appear with a delay and are not expected to be the main driver of current UK summer conditions.
Outlook For The Remainder Of Summer
Forecasting models continue to suggest a mixed pattern for the remainder of the summer, with alternating periods of heat and more average conditions. Periods of very warm weather remain possible, with short-lived spikes in temperature expected during high-pressure phases.
The summer season is likely to continue showing variability, with conditions shifting between hot and cooler intervals as different weather systems move across the UK.
