In November 2012, he signed a four-year contract with the Croatian club Cibona.

Again, in 2012, he was nominated for the FIBA Europe Young Men's Player of the Year Award, finishing second.

Šarić had initially decided to declare for the 2013 NBA draft on April 4, 2013.
However, two days after the initial declaration, he decided not to participate in it and had planned to play for KK Cibona for at least one more season.
Šarić would, however, officially declare himself for the draft once again on April 14, 2013.
Finally, Šarić withdrew from the draft altogether, because of his desire to stay in Europe for another year, to gain experience.

In 2013, he won the Croatian National Cup and Croatian League championship with Cibona, and won the MVP award for the Croatian finals.

He was named the 2013 FIBA Europe Young Player of the Year in February 2014.
In April 2014, he was selected into the ideal team and also named the MVP of the Adriatic League, averaging 16.7 points, 9.7 rebounds and 3.2 assists in the regular season.
In the Final Four of the competition, Cibona eventually won the league championship, and Šarić was also proclaimed the MVP of the final four.
He was also named the ABA League Top Prospect for the 2013–14 season.
In November 2012, he signed a four-year contract with the Croatian club Cibona.
Again, in 2012, he was nominated for the FIBA Europe Young Men's Player of the Year Award, finishing second.
Šarić had initially decided to declare for the 2013 NBA draft on April 4, 2013. However, two days after the initial declaration, he decided not to participate in it and had planned to play for KK Cibona for at least one more season. Šarić would, however, officially declare himself for the draft once again on April 14, 2013. Finally, Šarić withdrew from the draft altogether, because of his desire to stay in Europe for another year, to gain experience.
In 2013, he won the Croatian National Cup and Croatian League championship with Cibona, and won the MVP award for the Croatian finals.
He was named the 2013 FIBA Europe Young Player of the Year in February 2014. In April 2014, he was selected into the ideal team and also named the MVP of the Adriatic League, averaging 16.7 points, 9.7 rebounds and 3.2 assists in the regular season. In the Final Four of the competition, Cibona eventually won the league championship, and Šarić was also proclaimed the MVP of the final four. He was also named the ABA League Top Prospect for the 2013–14 season.
Dario Šarić