The Polish striker, who has let the line admirably for Dortmund in the absence of Lucas Barrios, grabbed a brace in the first-half, before adding a third in the 78th minute to ensure the match ball was his for the keeping for the first time ever in his career.
And while Lewandowski is pleased with his own performance, he stressed that Dortmund's win was extremely important, especially after they were comprehensively beaten by Marseille in the Champions League earlier in the week.
"I have never scored a hat-trick before," Lewandowski told UEFA.com. "This is special, not only because it is my first, but also because I did it in the Bundesliga, and especially after the disappointment of Marseille.
"After a game like that [the loss to Marseille], it is very important to show that the team still has a lot of quality.
"We have proved that we are still aiming for the top prizes."
After a shaky start to the season, Lewandowski has no doubts Dortmund can now build on their win over Augsburg and mount a credible challenge as they look to retain their Bundesliga title.
"I hope it was a breakthrough game which showed us, and everybody, that we are still a very strong side and are back on the right path."
Dortmund have now climbed to sixth in the league standings, six points behind leaders Bayern Munich who have 19 points.