The debutants were handed a 0-2 defeat at the Tema Sports Stadium on Saturday.
The first half failed to produce a goal despite dominance by the home side.
Michael Kporvi after the interval powered the Harbour boys into the lead in the 65th minute and he doubled the lead a minute later to give his side a comfortable 2-0 win.
Tema Youth have seven points after match day five of the Ghana Premier League.
They have won two and drawn one of the three home games played thus far: Defeated Berekum Chelsea 2-1, drew 1-1 against AshGold, before edging Bolga Stars 2-0.