Cocoa futures in London reached a three-month high on Monday due to concerns about the sustainability of the current arrival rate at ports in Ivory Coast, the world's largest cocoa producer. Despite remaining above the pace from the previous season, traders believe that arrivals could decline in December due to heavy rains leading to high flower mortality. As of November 10, cocoa arrivals at Ivory Coast ports had increased by 30% compared to the same period last season, reaching 455,000 metric tons.