At the Multi Commodity Exchange, nickel for delivery in current month fell 50 paise, or 0.07 per cent, to Rs 693.30 per kg, in a business turnover of 995 lots.
Also, metal for delivery in October fell by a similar margin to trade at Rs 699.10 per kg in 889 lots.
Market analysts said profit-booking and squaring-up of positions, today being the last day of September expiry, mainly weighed on nickel futures.