Residential property prices rose by 2.3% last month and were 9.5% higher on an annual basis.
The latest figures from the Central Statistics Office show that in Dublin, residential property prices increased by slightly more than average, at 2.8%.
Prices in the capital last month were 8.2% higher than in August 2014.
Outside of Dublin, property prices rose by 1.9%, but were 10.8% higher compared to the same time last year.
Compared to the peak level in 2007, Dublin house prices are 34.4% lower and outside of Dublin residential property prices are 38.7% lower than their highest level.