The Guardian • 12/30/2025

The Royal National Lifeboat Institution (RNLI) has urged individuals planning to swim in the sea to be cautious, particularly after the disappearance of two swimmers on Christmas Day. They highlighted the risks associated with cold-water shock and adverse weather conditions for anyone entering water temperatures of 15C or below, noting that the average sea temperature around the UK and Ireland at this time of year is between 6C and 10C.
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