Brazilian cotton lint prices gain in September as spot supply stays tight

Cotton lint prices in Brazil have swung in both directions during the first half of September but are holding an accumulated gain for the month, according to the Center for Advanced Studies on Applied Economics (Cepea). Researchers at the centre attribute the increase to the firm stance of part of the selling side and to limited availability in the domestic spot market.

Forward contracts keep the spot market thin

A large share of market agents is currently focused on delivering against contracts closed in advance, which leaves little lint free for new negotiations. With sellers under no pressure to move volume, they can wait for better bids instead of discounting to close business.

Trading in the domestic market remains sporadic. Regiao News, citing Cepea, reports that buyers and sellers are struggling to align on terms, with disagreements covering both price and the quality of the lint on offer. Quality mismatches matter in a market this tight: when only residual lots are available for spot sale, the fibre being offered does not always meet the specifications buyers want, and that alone can stall a trade regardless of the price under discussion.

Weaker international prices add caution

The domestic firmness is not being confirmed abroad. Recent declines in international cotton prices have made both buyers and sellers in Brazil more cautious, and Cepea researchers say agents are postponing new operations while they wait for clearer signals on the behaviour of the external market.

The result is a market moving on two tracks: restricted supply pushes domestic values up, while the falling external reference argues for lower ones. Until one side resolves, few participants want to commit volume at current levels.

August shipments drop from July but beat 2025

Brazilian exports of cotton lint totalled 106.35 thousand tonnes in August 2026, according to data from the Secretariat of Foreign Trade (Secex). The volume was 31.4% below July but 37.3% above August 2025.

• August 2026 shipments: 106.35 thousand tonnes
• Change versus July 2026: minus 31.4%
• Change versus August 2025: plus 37.3%
• January to August 2026: 2.075 million tonnes

Cumulative exports from January to August reached 2.075 million tonnes. Cepea researchers highlight that, with four months still left in 2026, that figure already corresponds to the fourth-largest volume ever recorded for a full year in the Secex historical series.

The eight-month total implies an average of roughly 259 thousand tonnes shipped per month, which puts August's 106.35 thousand tonnes well below the pace set earlier in the year. The year-on-year comparison is the more informative one for exporters: August moved more than a third more lint than the same month of 2025, and the January to August result puts Brazil on course for one of its strongest export years on record even with the monthly slowdown.

For the domestic chain, the two data sets fit together. Heavy committed selling for export is precisely what removes lint from the internal spot market, leaving processors and spinners in Brazil competing for a thin residual supply. That is what sustains domestic quotations in September even as international values retreat.