Mora was named American League Player of the Month for August 2008. Mora batted .418 (41-for-98) with 8 home runs and had an MLB leading 32 RBIs in 24 games. He posted a .765 slugging percentage and a .455 on-base percentage, with 17 extra-base hits, including eight doubles. Mora had a 13 multi-hit games in August 2008 and maintained an 8-game hitting streak from August 1–10. On August 17 at Detroit, Mora went 5-for-6 with two doubles, 2 home runs, 4 runs scored and 6 RBIs during a 16–8 Orioles win. Overall, Mora had five games in August in which he collected four-or-more RBIs. Mora injured his hamstring on August 29, 2008, missing the final games of his impressive month.