The Germany international linked up with the Nerazzurri in January, with a view to a permanent switch to San Siro this summer.
However, the World Cup winner is now returning to the Emirates after managing just one goal in 17 Serie A appearances.
Podolksi argued, though, that he was simply not suited to the Italian game and that he still has plenty to offer Arsenal boss Arsene Wenger.
"English football is the one which best suits my style, but I know how suddenly everything can change," the 30-year-old told Bild.
"I have characteristics to help different teams, but it was a mistake to go to Inter with no redemption clauses.
"In football, there are times when everything doesn't work out for the best. You're not always playing as a starter and you just have to accept the decisions and work on your own game.
"That's what I did, but now I'm looking forward. I've always felt comfortable [at Arsenal].
"With the fans, with the team and also with the manager. I'm going back to play, I have to say my qualities suit Arsenal."