Experts advise beachgoers to be aware of rough sea, high waves, strong winds and undercurrents, which typically occur at this time of the year.
Tourists are recommended to comply with the flag signaling and not enter the sea when the flag is red.
There has been undercuurent in the recent 10 days and this has led to unpleasant incidents. Currently the flag at beaches in Varna is yellow, tourists should use extra caution.
The weather has been hot since the beginning of the week, and are expected to remain high over the weekend - about 32 - 35 degrees per Celsius.
The medical service at the beaches in Varna told BNT that there were no reports of fainted people, but advise tourists to avoid standing in the open sun for a long time and recommend drinking plenty of water.