Overview
- Rescue bodies including the RNLI, fire services and ambulance trusts have issued high‑visibility safety warnings this week as hotter weather drives more people to open water.
- Officials say water below about 15°C can cause cold water shock, an involuntary gasp, rapid breathing and loss of limb control that can incapacitate even strong swimmers.
- At least 18 people have died in recent open‑water incidents during earlier hot spells, with many victims reported to be teenagers or children, prompting renewed public messaging.
- Practical advice from agencies stresses the 'float to live' technique, calling 999 for the coastguard or fire service, and never entering the water to attempt a rescue.
- Open water sites often lack lifeguards and hide hazards such as strong currents, sudden depth changes and submerged objects, which makes rescue harder and increases the chance of further incidents as more people seek relief.