London prices have since lost some ground, and were trading at $2,070 per tonne as of 0949 GMT on Thursday. Vietnamese coffee exporters, faced with dwindling robusta supplies, are paying more to buy beans from international trading houses who scooped up much of the crop early in the season.
The country's coffee exports in May fell 9.4 percent compared with April. Coffee exports are expected to touch 90,000-120,000 tonnes in June, traders said. Farmers in Vietnam, the world's biggest robusta producer, quoted local prices at 44,500 dong-45,000 dong ($1.96-$1.98) per kg, marginally down from 45,000-45,100 dong last week.