Adebayor, 24, banged in 30 goals last season.
But the Togo striker is on 11 this term and nowhere near his sensational best as the Gunners head for Hull today.
Wenger said: “Adebayor has not had the same form. He dropped off a little bit but it happens.
“Cristiano Ronaldo at Manchester United scored 44 goals last year — it doesn’t look like he’ll get 44 this year.
“But I know Adebayor is working very hard to come back.”