The RNLI has issued a safety warning as temperatures soar this week.

The charity said that coastlines are set to be "extremely busy" over the coming days as temperatures near 30 degrees.

To help people stay safe, beachgoers have been urged to swim on lifeguarded beaches within the designated red and yellow flags.

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The charity has also advised people in trouble at sea to use the "Float to Live" technique and call 999 in emergencies.

Sam Johnson, from the RNLI National Water Safety Team, said: "We are expecting the coast to be extremely busy with this burst of warm weather.

"We want everyone to enjoy being around the water but we also want to make sure people stay safe and know what to do in an emergency.

"‘Always visit a lifeguarded beach and swim between the red and yellow flags.

"If you get into trouble in the water, Float to Live: tilt your head back with ears submerged and try to relax and control your breathing.

"Use your hands to help you stay afloat and then, once you are through the initial shock, call for help or swim to safety if you can.

"In an emergency call 999 and ask for the coastguard."

The RNLI has also warned people against tombstoning, which is when people jump from high-up platforms into the sea.

The charity said this can be extremely dangerous as water depth can be unpredictable and can change quickly with the tides.

The water may be shallower in some areas than the jumpers think and hidden objects on the seabed can also increase the risks of becoming injured.

Jumpers are also at risk of suffering from cold water shock.

More information about sea safety can be found at https://rnli.org/news-and-media/2024/june/24/rnli-in-the-south-east-issues-safety-warning-as-temperatures-continue-to-rise.

One awful incident of tombstoning was in 2022 when John Horseman, 47, died in hospital after jumping from Brighton Palace Pier at low tide with a friend.

He suffered severe brain damage from the incident and had his life machines turned off.

He also suffered a lack of oxygen from being in the water too long.