Emergency services were called to the Pacific Highway in Charmhaven about 12.15am on Sunday, after an altercation between patrons and a group of young people outside a licensed premise.

Police have been told the group of youths was asked to leave the area outside the venue, before a glass bottle was thrown.

An altercation followed, during which a 20-year-old man sustained stab wounds to the chest and hip. The group of youths fled the scene on foot.

Paramedics treated the man, before he was taken to John Hunter Hospital in a stable condition. His injuries are not considered to be life-threatening.

Officers attached to Tuggerah Lakes Police District commenced an investigation and following inquiries, arrested a 15-year-old boy in San Remo about 1am.

He was taken to Wyong Police Station and charged with wounding a person with intent to cause grievous bodily harm and having custody of a knife in a public place.

The teenager was refused bail to appear before a children's court.