Against the Swiss franc, the leu fell to the weakest rate since December 2010, at 3.4432 units.
The national currency also weakened against the US dollar, trading at 2.888 units, from 2.8701 units in the previous session.
In the opening, the leu traded at 4.167/4.1569 per euro, from 4.162/4.164 per euro at Friday’s closing. It later lost ground, hitting an early low of 4.175 per euro.
At around 13:00 local time, the leu traded near 4.17 to the euro.
On the money market, overnight rates were at 2.7%-3.2% a year.