Coffee Falls to Multi-Week Lows as Brazil’s Supply Outlook Improves (2 September 2026)
Arabica broke below 300 cents per pound as a larger Brazilian crop, harvest-related selling and favourable weather reinforced expectations of improving global coffee availability.
Coffee futures extended their decline on Wednesday, September 2, as the market reassessed the global supply outlook following a substantial increase in StoneX’s forecast for Brazil’s 2026/27 crop.
December Arabica closed at 297.43 cents per pound, falling by more than 3% and finishing below the important 300-cent threshold. The contract traded between 295.35 and 308.35 cents during the session and recorded its lowest closing level since July 24, approximately 40 days earlier.
London Robusta followed the same direction, although its decline was less pronounced. November finished 1.58% lower at $3,406 per tonne after trading between $3,381 and $3,475. This was its weakest close since June 15, marking a 75-day low.
The decline was driven by a combination of fundamental and technical pressure. A larger Brazilian harvest is entering the market, storage capacity is becoming increasingly constrained, recent rainfall has improved prospects for the next production cycle, and Vietnamese exports are running well ahead of last year.
Failure above 317 cents leaves Arabica technically vulnerable
The move below 300 cents followed several unsuccessful attempts by December Arabica to establish itself above 317 cents. Prices approached that area on three consecutive sessions but failed to attract enough buying interest to extend the recovery.
Those repeated failures gradually weakened the short-term technical picture. Once selling intensified, the market moved through its first support area around 300.58 cents and briefly fell below 296 cents before recovering slightly into the close.
The position of the final price within Wednesday’s 13-cent trading range confirmed that sellers remained in control. At 297.43 cents, December ended only 2.08 cents above the session low and surrendered most of its earlier recovery.
Market participation, however, was lower than on Tuesday. New York volume declined by 6,356 lots to 37,406, representing a reduction of approximately 14.5%. London volume fell even more sharply, dropping by 17,531 lots to 19,876, nearly 47% below the previous session.
Lower volume does not reverse the bearish technical signal, but it suggests that the decline was not accompanied by a broad increase in participation. This leaves room for continued volatility, particularly if prices attempt to recover above 300 cents or retest the recent low.
Arabica and Robusta spreads send different signals
Changes in the forward curves revealed an important difference between the two markets.
In New York, the December premium over March narrowed from 11.80 to 10.35 cents. The December–May spread contracted from 15.35 to 13.10 cents, while March–May declined from 3.66 to 2.75 cents.
The Arabica curve therefore remained backwardated, with nearby coffee still priced above later deliveries, but the degree of backwardation became less pronounced. This indicates that the market reduced part of the urgency previously attached to nearby Arabica supply.
London moved in the opposite direction. The November–January spread widened from $7 to $9 per tonne, while November’s premium over March increased from $25 to $28. The January–March spread also edged higher, from $18 to $19.
This widening Robusta backwardation suggests that immediate physical availability remains comparatively tight despite the fall in outright prices. The market is therefore becoming less concerned about nearby Arabica supply while continuing to attach a premium to earlier Robusta delivery.
Arabica also underperformed Robusta during the session. Based on the verified New York close, the premium of Arabica over Robusta narrowed to approximately 143 cents per pound, almost 10 cents less than during the previous session.
StoneX raises Brazil’s crop to a record level
The main fundamental catalyst was StoneX’s revised forecast for Brazil, the world’s largest coffee producer.
The consultancy now expects the country to harvest a record 77.2 million 60-kilogram bags in 2026/27. Its previous estimate, released in March, stood at 75.3 million bags. The revision added 1.9 million bags to expected supply and placed production almost 24% above the previous season.
Most of the increase came from Arabica. StoneX raised its Arabica forecast from 50.2 million to 51.8 million bags after field results indicated heavier beans and better yields than initially anticipated.
Rainfall during the bean-filling period supported crop development, allowing cherries to gain additional weight before harvesting. The Robusta and Conilon forecast was also increased, although more moderately, from 25.1 million to 25.4 million bags.
The revised figures suggest that Brazil’s production recovery is not limited to one variety. The country is expected to deliver both a very large Arabica crop and another substantial volume of Robusta and Conilon.
Storage constraints could accelerate producer selling
Brazil’s harvest is now close to completion, bringing a growing quantity of newly processed coffee into commercial channels.
Safras & Mercado estimated national harvest progress at 97%. Cooxupé, whose members operate across important areas of Minas Gerais and São Paulo, reported that 91.9% of their crop had been collected by August 28.
Harvesting reached 93.2% in southern Minas Gerais, 90.4% in the Cerrado Mineiro and 94.9% in the cooperative’s São Paulo areas. Matas de Minas remained behind the other regions at 80%.
The speed and size of the harvest are creating pressure on Brazil’s storage system. Some warehouses have reportedly reached full capacity and temporarily stopped accepting additional deliveries.
This development is important because many producers had been limiting sales while waiting for more attractive prices. With storage space becoming harder to secure, some growers may have to release coffee sooner than planned or risk a deterioration in quality.
Selling remains far from uniform. Producers continue to resist lower offers and many are marketing only the volumes required to meet immediate financial commitments. Nevertheless, logistical pressure reduces their ability to hold coffee indefinitely and could keep physical supply elevated during the closing stage of the harvest.
Rain reduces the market’s weather premium
Weather conditions added another bearish element. Parts of Minas Gerais received rainfall reportedly reaching 127% above the historical average during the latest week.
The additional moisture should improve soil conditions ahead of flowering for Brazil’s next crop. After an extended period in which weather uncertainty supported prices, the return of rain has reduced immediate concerns about the early development of the new production cycle.
It remains too early to assume that favourable rainfall will guarantee another strong harvest. Flowering must be followed by adequate moisture to secure fruit setting, and excessive rain could create separate agronomic difficulties.
For the moment, however, the weather is supporting production expectations rather than threatening them. This has made it harder for the market to maintain a large risk premium while the current record crop is still moving through the supply chain.
Brazilian physical prices fall faster than futures
The decline in New York was amplified in Brazil by an approximately 1% fall in the US dollar against the real.
A weaker dollar reduces the amount Brazilian producers receive when international coffee prices are converted into local currency. With both futures and the exchange rate moving against growers, domestic prices experienced a sharper adjustment.
Type 6 hard Arabica in Varginha declined by as much as 5.4% to approximately R$1,750 per bag. Processed cherry coffee lost between 2.8% and 5.1%, with the Varginha reference falling towards R$1,850 per bag.
The lower domestic prices may persuade some growers to postpone voluntary sales. However, producers facing storage or cash-flow constraints may have less flexibility, leaving the physical market caught between price resistance and the practical need to move coffee.
Vietnam contributes to the improving supply picture
Stronger exports from Vietnam added to expectations of increased global availability, particularly in the Robusta market.
Vietnam shipped 1.33 million metric tonnes of coffee during the first eight months of 2026, according to the country’s statistics office. Export volume increased by 13.7% compared with the same period of 2025.
The value of those exports rose by 8.6% to $6.51 billion. Because shipment volume expanded faster than revenue, the figures also point to a lower average export value compared with the previous year.
August exports were estimated at 132,600 tonnes, another increase of 13.7% from a year earlier.
Vietnam’s stronger export flow, together with Brazil’s projected 25.4-million-bag Robusta and Conilon crop, supports expectations of greater supply during the coming months. However, the widening London spreads show that the market has not yet fully resolved concerns about immediate Robusta availability.
Exchange stocks offer little confirmation of the sell-off
New York certified stocks declined by 149 bags to 223,762 bags, while another 3,205 bags were awaiting certification.
The small reduction is significant because it shows that Wednesday’s decline was not triggered by an increase in coffee already available for delivery against the exchange. Instead, the bearish pressure came from expectations: larger future Brazilian availability, improving weather, stronger exports and the possibility of accelerated producer selling.
The contrast between falling prices and declining certified stocks also helps explain why volatility remains high. The broader supply outlook is improving, but immediately deliverable exchange inventories have not yet shown the same expansion.
Lower prices could expose pressure on producer margins
The prospect of greater coffee production does not mean that conditions are becoming easier for farmers.
Global fertiliser prices have retreated from their recent geopolitical peaks, but Rabobank reports that affordability remains poor because agricultural commodity prices have not kept pace with input costs.
Phosphate-based fertilisers are a particular concern, with supply disruptions affecting important raw materials used in their production. Rabobank expects phosphate affordability to remain unfavourable until at least July 2027.
Fertiliser costs were not a direct cause of Wednesday’s market decline, but they remain relevant to the longer-term production outlook. If coffee prices weaken while input costs remain elevated, producers may reduce spending on fertilisation, renovation and crop maintenance. The effects of those decisions would emerge in later harvests rather than in the crop currently entering the market.
Traceability requirements will reshape coffee trade
The European Union’s deforestation regulation represents another structural issue for the coffee sector.
Research by Trase suggests that compliance requirements may spread beyond coffee sold directly into Europe. The EU accounts for approximately 40% of global coffee imports, but trading companies serving the bloc are involved in close to 80% of worldwide coffee shipments.
For large exporters, applying common traceability standards across their entire sourcing network may be more practical than operating separate systems for European and non-European buyers. European requirements could consequently influence how coffee is documented and traded across a much larger part of the global market.
The transition is likely to be most demanding in fragmented supply chains involving thousands of small farms. Traceability costs, farm mapping and documentation requirements may influence trade flows even when overall coffee availability is improving.