Coffee Prices Rise on Weaker Dollar, Supply Concerns

Recent price action has been especially volatile. The contract jumped 3.64% on Sept. 28, its strongest daily move in the latest sequence, before slipping back into a shorter-term downtrend. Over the past 30 days, the benchmark has fallen 12.31%, even though the annual five-year average trend remains upward. That tension reflects a market still trying to reconcile longer-term structural demand with near-term supply adjustments and speculative positioning.

The broader coffee complex has been supported by a weaker US dollar, which reduces the cost of dollar-priced commodities for buyers using other currencies and often encourages fund buying. Adalytica’s US dollar trade signals point to deep weakness, with the currency gauge in fear territory and sentiment readings sliding sharply over the past month. In coffee, that matters because currency moves can amplify weather-driven shortages or inventory tightness, especially in contracts with heavy global participation.

Supply-side risks remain the key variable. Coffee pricing is typically shaped by weather in Brazil and Vietnam, crop disruptions such as drought or frost, stock levels and the balance between arabica and robusta demand. Recent news flow has pointed to robusta strength in London as well, reinforcing the view that the rally is not isolated to one grade. When both major benchmarks firm together, it suggests that traders are discounting tighter near-term availability rather than a simple technical bounce.

For investors, the implications run through both commodity exposure and consumer margins. Producers and exporters stand to benefit if prices stabilize above recent averages, while roasters, packaged coffee sellers and restaurant operators face the risk of higher input costs if the move persists. Starbucks, J.M. Smucker and other coffee-linked companies have all flagged commodity cost pressure as a margin variable in filings this year, while smaller roasters such as JVA have historically been able to pass green coffee costs through to customers only with a lag.

The bullish case is that the weaker dollar, short-covering and persistent supply uncertainty can extend the rebound, especially if weather or stock data turn less favorable. The bear case is that the recent rally remains a corrective move inside a broader 2026 downtrend, with prices still well below this year’s peak of 375.45 pounds and vulnerable to demand destruction if retail prices rise too far.

For now, the market is signaling a fragile balance: enough tightening to lift prices off recent lows, but not enough certainty yet to call a durable trend change. Traders will be watching the dollar, Brazil and Vietnam weather, exchange inventories and any fresh evidence of short covering for the next leg.