The Dutch striker arrives from Sporting Lisbon for a reported £8.5m fee and will be expected to fire his new side into the top half of the table in his debut season
The Canaries were embroiled in a relegation battle for much of the last campaign but Hughton is confident his new acquisition will offer the firepower his side have been sorely lacking.
In an interview with the Daily Mirror, Hughton said: "In this division you have to make sure you are hard to beat but you also have to have players who can make the difference.
"I can't think of one game last season where we thought this one is going to be comfortable for us.
"This signing could be the one that turns some of our draws into wins. We drew a lot last season and that is one area where we would like to see the difference."
Christian Benteke proved an instant hit in his maiden campaign at Aston Villa and Hughton is hoping Van Wolfswinkel will make a similar contribution when he kicks off his career at Carrow Road.
"We hope he's the man," he added. "The test is can he do it in a very tough division. We've seen scorers at Aston Villa like Benteke when he arrived, and Grant Holt got 15 goals for us in the season before last."