Because of rocketing oil prices, the inflation rate over 12 months reached its highest since the birth of the euro in 1999, exceeding the prediction of 3.6 percent made by Eurostat at the end of May.
Monthly inflation stood at 0.6 percent in May.
"It's not a good figure," said European Commission Spokesperson for Economic and Monetary Affairs Amelia Torres. Inflation "remains the commission's main concern" when it comes to the economy, she added.
Europe needs to remain "extremely careful" to avoid a wage and inflation spiral, which would not be in the interest of European workers, Torres said.
But at the moment the trend seemed to be up, she noted.
The hike may prod the European Central Bank to raise interest rates in July, reports say.
In the EU, annual inflation hit 3.9 percent last month, up from3.6 percent in April. The rate stood at 2.1 percent a year earlier.
The lowest annual rate was observed in the Netherlands at 2.1 percent, followed by 2.8 percent in Portugal and 3.1 percent in Germany. Latvia, Bulgaria and Lithuania had the highest inflation rates, at 17.7, 14 and 12.3 percent respectively.




