Overview
- Official forecasts say southern and eastern England will warm again midweek with widespread highs of about 30–35C and locally low‑to‑mid 30s in London.
- Private Netweather maps show a developing high‑end scenario of about 39C on Wednesday 29 July but that peak is provisional and model‑dependent.
- Water companies have already imposed restrictions that put more than 20 million people under hosepipe bans as reservoirs and rivers run low.
- Safety groups and emergency services warn warm, breezy coastal conditions will raise open‑water risks after at least 35 drowning deaths in England since May.
- Climate and public‑health experts say repeated heatwaves this summer, including June’s record 37.7C, underline the need to upgrade infrastructure and heat preparedness.