The rupee on Monday depreciated by 31 paise to 46.59 a dollar in opening trade on expectations of more capital outflows by foreign funds as market may open lower in line with weak Asian markets.

At the Interbank Foreign Exchange (Forex) market, the domestic unit traded 31 paise down at 46.59 a dollar. It had closed 21 paise down at 46.28/29 against the dollar in previous trading session on Friday.