US economic data on Tuesday were mixed.
The S&P/Case Shiller composite index of home prices in 20 cities rose 0.9 percent in June from the previous month and 0.5 percent from a year earlier, the first year-on-year price increase since September 2010.
However, the Conference Board's consumer confidence index fell to 60.6 in August from 65.4 in July.
German consumer confidence is holding steady though. GfK reported on Tuesday that its consumer sentiment index will remain at 5.9 next month.