The leu closed at 4.255/4.257 per euro, about 0.7% lower from 4.2265/4.228 per euro Friday.
Elsewhere in the region, the leu’s peers were losing 0.1% on average versus the European currency. The leu’s increased vulnerability is due to a higher exposure to Greek banks, according to dealers.
The leu opened down at 4.235/4.24 per euro and further lost ground, hitting the day’s low at 4.277 per euro.
The central bank set the leu’s reference at 4.2635 to the euro, the weakest rate in four and a half months. Against the Swiss franc, the leu fell to a fresh all-time low at 3.5396 units.
On the money market, overnight rates edged down to 2.6%-3.1% a year, from 2.7%-3.2% a year Friday.