Mumbai: The rupee opened lower by 2 paise at 64.08 against the dollar today as the American unit came in a few notches higher overseas amid foreign capital outflow. 

The dollar rose against euro, which came under pressure after snap poll results showed that Catalan separatists kept a slim majority in Parliament, an outcome that spells uncertainty for Europe. In the opening session, the domestic unit fell by 2 paise to 64.08. Yesterday, it had ended higher by 5 paise at 64.06 because of greenback selling by exporters and banks. 

The benchmark BSE Sensex rose 77.49 points, or 0.22 percent, to 33,833.77 in early session today.