March raw sugar SBc1 fell 0.13 cents, or 0.5%, to 27.05 cents per pound, Reuters reports.
Brazilian mills produced 3.36 million tons of sugar in the second half of September, almost double last year and exceeding analysts' expectations.
However, sugar prices are underpinned by concerns over supplies from India and Thailand as unfavorable weather conditions prevail.
European Union negotiators in free trade talks with Australia are proposing import quotas so low despite sugar shortages in Europe that supply is no longer commercially viable, industry sources said.
December white sugar market LSUc1 fell $1.40, or 0.2%, to $719.70 a tonne.