Auguste is very old-fashioned and not given anymore. It reminds of Philippe-Auguste or of the clown Auguste. So it's either pompous or slightly ridiculous.
This name is also used in Germany, where it is strictly feminine. It's a (actually more common) variant of Augusta. A famous bearer of this name was Kaiserin Auguste Viktoria - known as Augusta Victoria of Schleswig-Holstein in English -, the last German Empress and Queen of Prussia. [noted -ed]
-- Anonymous User 3/2/2012
Auguste (1780-1841) was the daughter of King Frederick William II of Prussia and his second wife Friederike.