Full Breakdown
Late-Summer Warmth Returns to the UK Amid a Dissipating Heat Dome
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Core Event
A high-pressure ridge is driving unusually warm, dry conditions across much of the United Kingdom. Forecasts indicate temperatures could peak at 25 °C–26 °C in southeast England, with most of England, Wales, Northern Ireland and eastern Scotland reaching the low-20s. The warmth is expected to persist through the latter part of the weekend and into early next week before a cooler front arrives from the west.
Background and Atmospheric Pattern
The Met Office describes the situation as a “heat dome” that formed over western Europe as warm air from North Africa was pushed northward. A deep low-pressure area developing west of the UK is expected to draw this warm air onto the British Isles, while high pressure builds aloft, suppressing cloud formation. A buckling jet stream to the north of the UK is set to shift the pattern later in the weekend, allowing the cooler front to move in.
Data and Statistics
- 2026 has already become the warmest year on record for the UK, with Met Office figures showing more than 89 days above 25 °C, surpassing the previous record set in 1959.
- Rainfall measurements recorded only 11 % of normal September precipitation at Leconfield, East Yorkshire, and 14 % at Durham, far below the 50-60 % typically expected by this stage of the season.
- The heat dome that affected western Europe earlier in September produced temperatures above 40 °C in parts of Spain and Portugal, contributing to the above-average conditions now felt in the UK.
Impact on Drought and Water Resources
The dry spell is worsening drought conditions in England and Wales. Reservoir and water-storage levels remain low, and the limited rain that has fallen has been insufficient to alleviate the deficit. Research cited by the BBC notes that at least seven months of sustained rainfall would be required to end the drought.
Official Forecasts and Near-Term Outlook
The Met Office projects predominantly dry and bright weather for Friday, with variable cloud and occasional rain in northern Ireland. Saturday is expected to bring lingering cloud and patchy rain in southern England and Wales, while northern areas may see brief sunny spells. From Sunday through Tuesday, conditions should remain dry but mostly cloudy, with light winds and a modest warming trend. The agency cautions that the timing of the incoming colder front remains uncertain, and that weather will become more changeable after the high-pressure ridge weakens.