Vast swathes of the UK, particularly in the south, are bracing for another significant heatwave this week, with many of the driest regions having missed crucial rainfall over the past weekend. This comes as the summer of 2026 continues its pattern of low precipitation and consecutive periods of high temperatures, escalating concerns over water scarcity and environmental impact.
While parts of northern and western UK experienced some much-needed showers and unsettled conditions over the weekend, southern areas – where rainfall has been notably scarce – are once again set for soaring temperatures and prolonged dry, sunny weather. This disparity in precipitation is exacerbating already critical conditions, with parts of Wales officially declaring drought status. Meanwhile, areas across southern, central, and eastern England remain in a state of “prolonged dry weather,” the final stage before a full drought declaration.
The Met Office forecasts indicate that temperatures will begin to climb significantly from Tuesday, with the heat initially concentrating across central and eastern England before spreading slightly northwards and westwards by midweek. Wednesday is anticipated to be the hottest day, with readings potentially reaching 30-35°C across the Midlands, southern, and eastern England. South-east England could see peaks around 35°C. In contrast, Scotland and Northern Ireland are expected to remain cooler, with some showers and temperatures generally in the high teens to mid-twenties Celsius.
In response to the escalating temperatures, the UK Health Security Agency (UKHSA) has issued heat health alerts for several English regions. These alerts are active from 9:00 BST on Tuesday, 28 July, until 9:00 BST on Friday, 31 July, covering the South West, South East, London, East of England, West and East Midlands, and Yorkshire and The Humber. The UKHSA has warned that the heat is likely to cause minor impacts on health and social care services, with an increased risk to vulnerable individuals.
The lack of substantial rainfall in the driest areas is a growing concern. Locations like Wisley in Surrey, for example, recorded no rainfall for 39 consecutive days up to 26 July. Many parts of north Wales and southern and eastern England have seen only a few millimetres of rain, or even less, this month, with some spots receiving less than 2% of their average July rainfall. This prolonged dryness means soil moisture levels are critically low, posing risks to agriculture, natural habitats, and potentially leading to hosepipe bans or further water restrictions across affected regions.
As the intense heat develops across England and Wales, the short-lived nature of this particular heatwave compared to previous ones this summer offers little comfort for the parched landscapes. Without significant and widespread rainfall on the horizon for these critical regions, the long-term implications for water resources and the environment continue to be a dominant concern for authorities and the public alike.