Last month, the EU’s Eurostat agency said the eurozone grew by just 0.3 percent in the April to June period.
Eurostat also updated the first quarter growth figure from 0.4 percent to 0.5 percent, boosted by high-growth Ireland which was not included earlier estimates, a Eurostat official said.
The fresh data comes amid growing concerns for the global economy, hit by a slowdown in powerhouse China that has spooked financial markets.
The revised data still demonstrates that the eurozone economy suffered a slowdown in the first half of 2015, despite a massive European Central Bank stimulus programme to boost the fragile recovery after the debt crisis.
Eurostat said that all members of the eurozone expanded in the second quarter, except France, the bloc’s second biggest economy after Germany, which posted zero growth.
Export champion Germany grew at the eurozone average, by 0.4 percent.
Greece managed 0.9 growth in the period that was deeply marked by a political crisis dividing leftist-led Athens with its eurozone creditors.