The 2.3% estimate matches latest projections by the European Commission and the International Monetary Fund.

Data earlier this week showed Spain's economic expansion slowed in the second quarter to a lower-than-expected 0.5%, with domestic demand contributing less even as exports edged up. On an annual basis the economy grew by 2.3%, down from 2.4% the previous quarter.

Spanish growth has been consistently above the European average since it came out from a prolonged slump in 2013, and the economy has so far largely appeared unaffected by the country's political problems. Spain still has no new government more than three months after an election.