Parts of the UK are experiencing a spring heatwave with temperatures reaching record highs. Many people are going to beaches, lakes, and rivers for relief, but cold water can create serious risks. Cold water shock is a sudden involuntary response when the body is immersed in water below 15°C, and it can be fatal. The Met Office warns that anyone can be affected regardless of age, fitness, or swimming ability. UK sea temperatures in May often range from about 9°C to 13°C, far below typical heated pool temperatures. Entering cold water can cause an involuntary gasp, increased breathing rate, and a heart-rate spike, leading to panic, disorientation, and hyperventilation that makes swimming difficult or impossible.
"Even on a hot day, the sea, rivers, and lakes in the UK can remain cold enough to trigger this reaction. It's a physiological response that can affect anyone, regardless of age, fitness, or swimming ability."
"The sudden cooling of the skin causes an involuntary gasp, which can lead to inhaling water. Your breathing rate increases rapidly, and your heart rate spikes. This can cause panic, disorientation, and even hyperventilation, making it difficult or impossible to swim."
"Even strong swimmers can be overwhelmed by cold water shock. The initial effects typically last for around 90 seconds, during which time it's crucial to stay calm and avoid unnecessary movement."
Read at Mail Online
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