Bynum originally had tentatively planned the surgery for July 18.
The 7-footer averaged 8.6 points and 6.9 rebounds during the playoffs, never missing a game despite suffering the knee injury in Game 6 of the first round against the Oklahoma City Thunder.
Bynum had the knee drained twice during the postseason and once more on June 22 after the Lakers' championship parade.
Bynum was a near All-Star this past season, averaging 15 points and 8.3 rebounds per game, but has missed 96 games in the past three seasons because of injury.
The 22-year-old said he planned to work out with a Lakers trainer in Los Angeles and Vancouver after the surgery to rehab his knee and improve his core strength as a preventative measure against injuries in the future.
Dave McMenamin covers the Lakers for ESPNLosAngeles.com. Follow him on Twitter.