In 26 games during the month, Uggla was tied for the major league lead and tops in the National League with 10 home runs, while his 21 RBI were good for sixth in the NL. He also finished among the league leaders with a .670 slugging percentage and a .405 on-base percentage.
Uggla began with month by extending his career-high hitting streak to 33 games before having it snapped on August 14 against the Chicago Cubs. The hitting streak was the longest by a Braves player since the team moved to Atlanta in 1966 and the second-longest in franchise history behind Tommy Holmes' 37-game streak in 1945.
The 31-year-old veteran also clubbed his 30th home run of the season on August 22 in a 3-0 win over the Cubs, marking his fifth 30-home run season, a major league record for second basemen.
It is Uggla's first career monthly honor.
Other players receiving votes were Colorado's Carlos Gonzalez and Troy Tulowitzki; Cincinnati's Joey Votto; Brewers outfielders Ryan Braun and Corey Hart; Dodgers center fielder Matt Kemp; and Phillies right fielder Hunter Pence.