Heatwave Builds Towards 34C Peak From Midweek
The third heatwave of the summer is under way, with heat-health alerts covering most English regions until Saturday evening and the peak — around 34C in the South East — expected on Thursday or Friday. This spell is drier than June’s record heat but longer, with high temperatures reaching into Wales. Kent’s hosepipe ban is in force and Hampshire and the Isle of Wight follow on Friday.
The pattern of risk in a long dry heatwave concentrates in its second half: heat deaths typically peak two to three days into sustained high temperatures, pointing at Wednesday to Friday, and nights that fail to cool are what turn discomfort into medical load. June’s benchmarks — a provisional 37.7C record and the first three-day red warning — mean the systems being tested this week have already run hot once this summer. Water stress is compounding: two supply regions restricted, rivers falling, and the season barely half done. Watch for amber escalation from the UKHSA around the peak, and how far reservoir levels drop by the weekend.