Weapons – including bottles and knives – were seen and used during the brawl at around 7.50pm on Friday, police said.
The two wounded teens suffered wounds to their faces and are receiving treatment in hospital for non-life-threatening injuries.
Dispersal orders were put in place last night for Southend High Street, Queensway through to Hamlet Court Road and the seafront.
Police said the orders would allow officers to search people or vehicles for offensive weapons without suspicion, and insist upon the removal of face coverings.
Officers will continue patrolling the area.
