Santos, Brazil's largest port and the gateway for the country's farm exports, has developed two distinct congestion bottlenecks — one for soybean cargoes and one for coffee — according to a StoneX report on conditions at the port.

The split matters commercially. When a port congests uniformly, shippers across commodities face the same delay and can plan around a single, shared constraint. What Santos is experiencing instead is a divided chokepoint: soybean loading operations and coffee handling are each queuing on their own timelines. That forces grain houses, coffee exporters and their forwarders to manage two separate berth-wait problems at the same port, rather than one.

For soybean shippers, the congestion lands squarely on an export chain that is tightly bound to the harvest calendar. Beans move from Mato Grosso and other interior producing states to Santos by truck and rail in waves that follow the crop. When berths and loading equipment back up, the queue lengthens precisely when inland supply arrives, pressuring shippers to either absorb demurrage and waiting costs or slow dispatches from upcountry. Either choice erodes export margins on a commodity where basis and freight differentials decide competitiveness against rival origins.

Coffee faces a different version of the same problem. Coffee moves through Santos in smaller, more frequent parcels than soybeans and relies on warehouse and stuffing capacity close to the docks as much as on the berths themselves. A bottleneck that forms specifically around coffee flows signals pressure in that handling layer — the sheds, weighbridges and container yards where bagged and containerised coffee is consolidated before shipment. For roasters and traders in Europe and North America buying Brazilian arabica and robusta, the practical consequence is longer lead times and reduced schedule certainty on contracted volumes.

Forwarders booking out of Santos now have to price two risks, not one. A soybean booking and a coffee booking moving through the same port in the same week can encounter entirely different waiting periods, which complicates vessel planning, container positioning and the demurrage assumptions embedded in freight quotes. Carriers calling at Santos face a parallel problem: berth windows that slip unevenly depending on which commodity dominates a vessel's cargo mix, degrading schedule reliability on strings that depend on tight turnaround at the Brazilian gateway.

The StoneX report's framing of "two bottlenecks" also carries a message about infrastructure. A single congested channel typically reflects aggregate demand outrunning total capacity. Separate bottlenecks for two commodities suggest the constraint sits in commodity-specific handling assets — grain loading infrastructure on one side, coffee warehousing and consolidation capacity on the other. That distinction matters for how quickly the problem clears. General dredging or added berth capacity relieves a shared chokepoint; it does little in the short term for a queue that has formed at, say, a specific set of warehouses or loading equipment.

For shippers, the immediate playbook is the familiar one under port stress: build longer buffers into delivery windows, monitor the queue relevant to their specific commodity rather than a single port-wide congestion figure, and weigh diversion to alternative gateways where routing economics allow. Coffee shippers in particular have some ability to route through other Brazilian ports, while soybean flows remain heavily anchored to Santos given its bulk-loading capacity and inland transport links — a structural asymmetry that tends to keep grain queues at Santos even when coffee finds workarounds.

The report does not indicate how long the divided congestion is expected to persist, and duration will depend on how quickly vessel arrivals, inland inflows and handling capacity rebalance at each of the two chokepoints. Exporters and carriers will be watching whether the soybean and coffee queues converge into a single recovery — or whether one commodity clears first, freeing capacity that the other cannot immediately use.