Reason #1: Julio Rodriguez
This is the obvious one to start with. If not for the dominance of Julio, I don't know where this team would be. Also, holy crap Mookie Betts. Anyway, Julio was a monster in August, hitting an incredible .429/.474/.724 with 10 2B, 7 HR, and 11 SB. He jumped his average from .251 to .286, setting a handful of MLB records while doing it.
It's not just the month that was impressive, but the second half that I really want to focus on. Starting on August 13th, Julio was hitting .256/.319/.433. Over the remaining 13 games of the month that he played in (missing a couple with the sore foot), Julio would hit an astounding .516/.552/.855 with 6 2B, 5 HR, and 8 SB.
That's something that should be done in a video game, not during the dog days of summer with palyoff implications on the line. Julio would finish with a WAR of 2.4 just in August, and as of September 5th now has a WAR of 5.1 on the season. Nearly half his WAR came in that month alone.
Julio hasn't been the only hot hitter, though.