The leu closed at 4.42 to the euro, from 4.4285 per euro Tuesday.
The local currency opened at 4.4253 per euro and further appreciated, hitting an intraday high of 4.419 against the euro in the second half of the session.
Trading volume was high for a summer session, dealers said.
The central bank set the leu’s reference at 4.4244 versus the euro, the strongest rate this month. Against the US dollar, however, the leu’s indicative weakened 0.2% on the day to 3.3291 units.
In the money market, overnight rates were at 0.16%-0.66% a year, versus 0.21%-0.71% in the previous session.