October raw sugar settled down 0.07 cent, or 0.6%, at 11.14 cents per lb, after falling to a fresh 11-month low of 11.05.
The contract lost 8.8% on the month, its biggest monthly percentage drop in just over a year.
India's approval this week of export incentives for the 2019/20 season was a major bearish influence on the market, dealers said. There was, however, some uncertainty as to whether current price levels would allow for the full 6 million tonnes eligible under the scheme to be exported.
Still, weakness in the Indian rupee has compounded concerns about the potential for massive exports, dealers said.
Recent weakness in Brazil's currency has also pressured the market, as it can encourage producer selling of dollar-denominated commodities like sugar and coffee.
Brazil's ethanol industry is looking to grab a chunk of China's ethanol market as the Asian nation targets a 10% blend in gasoline, but a short-term jump in exports is unlikely.
October white sugar settled down $2.70, or 0.9%, at $301.60 per tonne, after setting a low for the monthly contract of $301.
December New York cocoa settled up $37, or 1.7%, at $2,222 per tonne. On the month, the contract shed 7.4%.
December London cocoa settled up 22 pounds, or 1.3%, at 1,709 pounds per tonne, after earlier dipping to a 3-1/2-month low of 1,684. The contract fell 8.6% on the month.
Cocoa prices have been pressured of late by uncertainty when it comes to global risk sentiment, with dealers concerned about the prospects for future global demand.
Expectations of a big 2019/20 main crop in top-growing region West Africa also pressured prices, dealers said.
The market got some support later in the session from a forecast from the International Cocoa Organization reducing its forecast for the size of the 2018/19 global cocoa surplus.
December arabica settled up 1.6 cent, or 1.7%, at 96.85 cents per lb.
On the month, the contract lost 6.2%, pressured by the weak Brazilian real and the market's continued struggle to absorb excess supplies.
Losses have been limited in the past week, however, by signals that bad weather in Brazil may curtail production.
November robusta coffee settled up $9, or 0.7%, at $1,334 per tonne, declining 2.4% on the month.