Newspaper Correio da Manhã (CM) reported that the Irish tourist was staying at the Pine Sun Park near Falésia beach in Albufeira with a group of family and friends when the tragedy occurred during the early hours of Monday morning.
The newspaper said that the man’s body was spotted at the bottom of the pool and that the alarm was raised at around 5am.
When local fire services arrived the man had already been pulled from the pool by a friend and a security guard.
CM claims that the man was on holiday in the Algarve and that he had been drinking when he decided to go for a swim in the pool, which at that time was closed.
An autopsy was due to be carried out to determine the exact cause of death.