The dollar surged versus most currencies, making dollar-priced soft commodities costlier for non US investors early in the day but shifted course, driving the sugar and cocoa markets.
For the first eleven months of the year, Vietnam exported 1.43 million tonnes of coffee, down 3.0% from a year earlier, Vietnam Customs said in a statement.
Meanwhile, robusta beans from the province of Lampung on Indonesia's Sumatra island were offered at a $270 premium to the April contract, a trader in Lampung province said.
Dealers said dry weather in southern Brazil remained a key supportive factor, with some crop damage now considered inevitable and plentiful December rain needed to limit losses.
Coffee shipments in the first nine months of this year fell 1.4pc from a year earlier to 1.25 million tonnes, the Customs Department said in a statement.