Here’s the thing about June Swoons and these Giants: It’s not really a thing.
Sure, the Giants won just 20 total games the last two Junes, but they won 17 games in June of 2012 and 17 more in June of 2011. In June of 2010, the start of this dynasty, the Giants won 13 games.
So no, there’s not a long history of the Giants totally tanking in June, and they managed to avoid it this June, too. After losing their first three games of the month, the Giants finished with a 12-14 month.