A British holidaymaker has been killed and several others hurt after falling from balconies, even though the summer getaway is yet to begin.
The Foreign Office said it was aware of seven cases so far this year - half the figure for the whole of 2012.
Four people were injured - one of them fatally - in June alone.
Many falls involve some of the three million young holidaymakers who head overseas every summer, sometimes drinking vast amounts of alcohol or taking drugs.
They are especially common in popular resorts such as Sunny Beach in Bulgaria and the Spanish island of Majorca.
Jon O'Shaughnessy, British consul in the Bulgarian capital Sofia, said: "Accidents can and do happen and climbing from balcony to balcony, jumping off them or drinking excessively while on one only increases your chances of something going wrong.
"All too often these incidents cost lives but the risks can be avoided if you take a moment to just think about the possible consequences."
Amid fears of further balcony deaths this summer, the Foreign Office and Association of British Tour Operators (ABTA) have launched a new campaign warning of the dangers of high-rise accommodation.
A leaflet offering advice on staying safe features a picture of the injuries Jake Evans suffered after falling head first from a balcony in Magaluf while reaching for a cigarette lighter.
The 19-year-old from Liverpool fell seven floors onto a plastic sun lounger, fracturing his skull, snapping his wrist and breaking all the fingers on his right hand.
He said: "Drinking most definitely affects your judgement. Had I been sober I'm sure I wouldn't have made the same decision to lean over for the lighter.
"Looking at the height I fell and my injuries I know I'm lucky to be alive.
"But the accident has changed my life. I have recurring problems with my back and right wrist and doctors have told me I probably always will."
The warning follows the death of Liam Davies, also 19, who is believed to have fallen more than 130 feet to his death after returning to his hotel in Sunny Beach after a night out with friends.
The teenager's body was found on the ground below the balcony of his room earlier this month.
Mr O'Shaughnessy said: "Our staff have seen the devastating effects a momentary lapse in judgement can have on victims and their families and we are working hard to ensure people understand the risks."