The former Real and Bayern Munich assistant coach was handed the Swansea reins in January with the club in the relegation zone.
He replaced Bob Bradley and immediately went about reversing the club’s fortunes.
Under his tutelage, the club claimed 26 from a possible 54 points, which was enough to see them avoid the drop.
Clement told the club’s official website: “I’ve been very fortunate in the past to work with some great teams and players. I am lucky to have had my hands on some really special silverware.
“The tenth Champions League at Real Madrid was a wonderful moment. League titles and cup competitions have also meant a lot.
“But, from a personal point of view, when you are the head coach and you are making the decisions and you are ultimately responsible for how the team plays, you feel everything, you feel every emotion.
“You feel the losses harder than everybody and you feel the victories more.
“From my point of view this is the best feeling I have ever had in my career.”
Swansea play Barnet in a pre-season friendly on July 12 ahead of clashes with Philadelphia Union, Richmond Kickers and North Carolina in the United States.