Analysts estimated the annual rate would accelerate to 8.5%, after it hit a 33-month high at 8.41% in May.
Last month’s figure was the first deflation since August 2009.
Food prices declined 1.3% on the month in June, but non-food and services prices inched up 0.2% and 0.7%, respectively.
Romanians paid by 11% less for fresh and canned vegetables in June compared with a month earlier, while the cost of dairy products edged down 0.24%.
On the other hand, postal and telecom prices went up 1.52% on the month in June, while rent costs increased by 0.42%, the data showed.
Romania’s harmonized index of consumer prices, or HICP, rose to 7.8% at the end of June, from 7.5% the month before.
The central bank targets an annual inflation of 3% at the end of 2011, plus/minus one percentage point around the band. The bank has revised upward its forecast on the year-end inflation to 5.1% from 3.6%, citing upside pressure from surging global prices for energy and food items.