The 24-year-old defender joined the Gunners on a free transfer in June after ending a five-year spell at Schalke 04 and has already endeared himself to the club's fans.
Kolasinac headed home a late equaliser in their Community Shield penalty shootout win over Chelsea, and in the Premier League opener against Leicester City, assisted a goal for Danny Welbeck.
Wenger told reporters at his press conference: "He has started well. Maybe he is the strongest, he is naturally strong.
"He uses quite well the strength of his body without violence and when he intervenes it doesn't look to be a foul, he just uses his body strength. It is an important quality to help adapt to the Premier League.
"He has the capacity to repeat runs and we noticed when we watched him play that he is quite dangerous in the final third. He already has some assists since he came here so overall maybe he is not a glamorous dribbler but the quality of his runs are very efficient.
"The determined attitude gets to the crowd and that gives a swing to the team, you can see that with him and when he intervenes he provokes happiness."
Arsenal face a trip to Stoke City in the league on Saturday.