Amber heat-health alerts have been issued across the Midlands and eastern and southern England as forecasters warn temperatures could stay above 30C for up to ten consecutive days, marking what would become the UK’s third official heatwave of 2026.
The UK Health Security Agency has issued amber heat-health alerts for the Midlands, eastern England and southern England, running from 09:00 BST on 8 July to 21:00 BST on 12 July, as forecasters warn the current hot spell could see temperatures exceed 30C somewhere in the country for up to ten consecutive days. Yellow alerts remain in place across northern England for the same period. The agency has warned of significant impacts on health and social care services, including a likely rise in deaths, particularly among people aged 65 and over or those with existing health conditions.
Heat Set to Build Through the Week
Parts of south-east England already met official heatwave conditions as of Monday afternoon, with more regions expected to cross their local thresholds as the week progresses. Temperatures are forecast to climb from Wednesday, pushing into the high 20s and low 30s across England and east Wales, with London and the south-east likely to see the hottest conditions, peaking at around 34C on Wednesday and Thursday.
Despite the intensity, this spell is expected to fall short of the record-breaking heat seen in late June, when temperatures peaked at 37.7C. Even so, some forecasting models suggest isolated parts of the UK could still reach the mid-to-high 30s later in the week if conditions develop as currently expected.
Longer, if Slightly Cooler, Than Previous Heatwaves
Unlike the June heatwave, which brought several “tropical nights” where temperatures failed to drop below 20C, this spell is expected to offer somewhat more relief overnight, though some larger urban areas are likely to remain in the high teens after dark, particularly later in the week, and a tropical night in a few locations has not been ruled out.
What sets this heatwave apart is its expected duration rather than its peak intensity. Current forecasts suggest temperatures could exceed 30C somewhere in the UK for up to ten consecutive days, compared with seven consecutive days during June’s heatwave and six days during May’s. The Met Office says high pressure is likely to remain dominant through the week, keeping temperatures above average across southern and eastern England well beyond the midweek peak.
Should the forecast hold, this would become the UK’s third official heatwave of 2026, following exceptionally hot spells in May and late June that broke several temperature records — including confirmation from the Met Office that June 2026 was England’s hottest June since records began, and the UK’s second-warmest June overall.
Hosepipe Ban and Water Safety Warnings
The prolonged dry, hot conditions have already prompted Southern Water to introduce a hosepipe ban across Hampshire and the Isle of Wight, with restrictions on non-essential water use beginning during this latest heatwave.
Emergency services have also renewed water safety warnings as the hot weather continues. The Royal National Lifeboat Institution (RNLI) is urging people to take care around rivers, lakes and the coastline, warning that cold-water shock remains a serious risk even during very high temperatures.
Wider Disruption Possible
The UK Health Security Agency has also warned that the prolonged heat could put pressure on transport infrastructure, with an increased risk of delays on roads and railways as temperatures climb into the 30s later in the week.
