Coffee exports in the past 11 months reached 1.56 million tonnnes and fetched around US$3.34 billion, according to the Vietnam Customs.
They increased by 42.1 percent in volume and 37.7 percent in value compared to same period last year.
The Vietnam Coffee and Cocoa Association said coffee output in the 2012-2013 crop is forecast to decrease 30 percent, and only half has been harvested so far.
The price of coffee in the country has dropped in recent times. On December 7, it stood at VND38,200-38,300 per kilo in the central highlands but at VND39,000 per kilo in other localities. One week later, it dropped by VND300-400 per kilo.
The average export price of coffee in November alone was down 3.46 percent over October to just US$2.148 per tonnes.