Cocoa prices rose 4.3% from last week at Cameroon's main port due to low supplies of the beans, traders and exporters said Monday.

A kilogram of cocoa beans was selling for 1,863 Central African francs ($3.14), up from 1,786 Central African francs a kilogram a week ago, according to figures from the country's cocoa board. Cameroon is the third-largest cocoa producer in West Africa, the world's top cocoa region.

The country's mid-crop cocoa production is gaining steam after a delay. Mid-crop harvests routinely run from May/June and end in August/September, but months of extensive dry weather have caused concerns that this year's output could fall further than expected.

Cameroon produced over 232,000 metric tons of cocoa in the 2014-2015 season, according to industrial and government figures.