A British tourist has died after losing consciousness while swimming at a beach in Greece.

A lifeguard pulled the 66-year-old from the water at Achladies beach on Skiathos shortly after midday on Friday after she fell unconscious.

Medical professionals performed CPR and immediately took the woman to the nearby Skiathos Health Centre, but they were sadly unable to save her life.

The woman is believed to have lost consciousness in the ‘intense heat in the area’, with temperatures soaring to 31C on the island and little respite.

An excessive heat warning has been issued on Skiathos, and authorities across Greece are urging tourists to take special care following a number of deaths related to the rising temperatures in recent weeks.

The woman had left her hotel to go for a swim on the picturesque beach on the south of the island, CNN Greece reports.

She was found by the beach lifeguard after falling unconscious and pulled onto the beach.

The lifeguard and a private doctor both performed CPR on the tourist, but were unable to help her.

She was taken by ambulance to Skiathos Health Centre, a seven-minute drive from the beach.

Medics at the hospital were also unsuccessful in their efforts to save her.

The woman will now be transported to Volos for an autopsy, local media reports. 

MailOnline contacted the Foreign Office for comment. 

In May, a British tourist drowned while swimming in the sea during a day trip to the Greek island of Kalymnos.

The 76-year-old is believed to have drowned before he could be pulled from the water and helped by emergency responders at the port of Vathi.

The man’s identity has not been released or reported in Greek media. 

Six tourists were found dead in Greece in June alone, with officials warning of the perils of an intense heatwave sweeping the Mediterranean.

The remains of a German hiker were found in a ravine on the island of Crete on Monday, June 24.

The 67-year-old had been on holiday with his wife when he embarked on a 12.5 mile hike from the Omalos plateau to the village of Sougia on the southern coast.

Officials expect he lost his bearings in the heat and took a wrong turn on a path before going missing.

He is reported to have called his wife to say he was not feeling well before she lost contact.

At least three other tourists on Greek islands are still reported missing, including a retired US police officer and two French women.

Daily Mail columnist and health writer Dr Michael Mosley tragically died from ‘heat exhaustion’ after ‘sitting down and losing consciousness’ while walking across the Greek island of Symi at the start of June, police said.

Dr Mosley, 67, was found in a rocky area at the resort of Agia Marina on June 9 after a five day search.

It is thought Dr Mosley may have sat down to gather himself after being overcome with exhaustion and by effects of the heat having taken a wrong turn down a mountain path.

Temperatures at the time had been nudging 40C and the excessive heat is thought to have played a role in his death. 

Temperatures soared past 40C (104F) through June, leading Greek authorities to close major tourists destinations and advise carrying water.

The heatwave has continued into July, with temperatures pushing 43C and causing wildfires in Greece.

Firefighters battled against two blistering infernos on Thursday near Thessaloniki in the north and a brush fire on Kea island as the heat makes dry regions susceptible to fire spreading.

The famous Acropolis in Athens, and other tourist sites, were shut this week as authorities urged visitors to be ‘particularly careful’ over the next few days.