Germany's business climate index edged up to 88.8 points in August from the revised 86.7 points in July, according to data from the ifo Institute published Tuesday.
Analysts expected 87.2 points for the month.
Meanwhile, the current situation index stood at 88.5 points, against the prior 86.5 points and the market forecast of 87 points.
The expectations indicator rose to 89.1 points from the revised 86.8 points earlier and the consensus estimate of 87.5 points.