Excess Rainfall in World's Largest Coffee Producing Country Triggers Market Repricing

Brazil, the world’s largest coffee producing country, is experiencing record-level precipitation that’s reshaping global coffee market dynamics. As excess rainfall floods the Minas Gerais region—accounting for the bulk of the nation’s arabica output—market participants are reassessing supply forecasts with significant price implications across both arabica and robusta futures contracts.

Mixed Signals Across Coffee Futures Markets

The coffee market displayed divergent trends in early trading sessions. March arabica futures (KCH26) edged higher by 0.39% (up 1.30 points), showing modest resilience, while March robusta contracts (RMH26) retreated 2.24% (down 92 points), hitting their lowest levels in four weeks. This dichotomy reflects contrasting supply dynamics between the two coffee varieties.

The divergence stems largely from Brazil’s weather situation. Somar Meteorologia reported that Minas Gerais received 69.8 mm of rainfall during the week ending January 30—a staggering 117% above historical averages. Such elevated precipitation dramatically boosts yield expectations, flooding markets with supply concerns that arabica traders are only beginning to digest.

Brazil’s Production Surge and Vietnam’s Export Momentum

As the world’s largest coffee producing country, Brazil’s supply outlook commands global attention. On December 4, Conab, Brazil’s official crop forecasting agency, increased its 2025 harvest estimate by 2.4%, revising projections to 56.54 million bags from the previous September forecast of 55.20 million bags. This upward revision came before the recent extreme rainfall events, suggesting potential for further production gains.

Compounding supply pressures, Vietnam—the globe’s leading robusta producer—is simultaneously ramping up shipments. Vietnam’s National Statistics Office disclosed on January 5 that 2025 coffee exports surged 17.5% year-over-year to 1.58 million metric tons. For the 2025/26 marketing year, production is forecast to climb 6% year-over-year to 1.76 million metric tons (equivalent to 29.4 million bags), approaching a four-year peak. The Vietnam Coffee and Cocoa Association indicated in late October that favorable conditions could push the crop 10% higher than the prior year.

This combination—record Brazilian production coupled with Vietnam’s export acceleration—saturates global markets with robusta supplies, weighing heavily on prices.

Rising Inventories Offset Declining Trade Flows

Inventory trends further complicate the picture. ICE arabica stocks, which had plummeted to a 1.75-year low of 398,645 bags on November 20, rebounded to 461,829 bags by January 14—marking a 2.5-month peak. Similarly, ICE robusta inventories climbed from a one-year low of 4,012 lots on December 10 to 4,609 lots by the end of January, signaling rebuilding stockpiles.

However, Brazil’s export activity tells a different story. Green coffee shipments in December fell 18.4% to 2.86 million bags, according to Cecafe, Brazil’s export authority. Arabica exports contracted 10% year-over-year to 2.6 million bags, while robusta exports plummeted 61% to just 222,147 bags. This export weakness provides modest price support, offsetting some bearish inventory trends.

Global Coffee Production Reaches Record as Stocks Face Pressure

Looking at the broader horizon, the International Coffee Organization reported on November 7 that global coffee exports for the 2025/26 marketing year (October through September) declined 0.3% year-over-year to 138.658 million bags. Yet production continues climbing.

The USDA’s Foreign Agriculture Service released a projection on December 18 forecasting that global coffee production for 2025/26 will hit a record 178.848 million bags—up 2.0% year-over-year. This comprises a 4.7% decline in arabica output to 95.515 million bags offset by a robust 10.9% surge in robusta production to 83.333 million bags. Brazil, as the world’s largest coffee producing country, faces a 3.1% production decrease to 63 million bags, while Vietnam’s output climbs 6.2% to 30.8 million metric tons.

Despite record global production, ending stocks for 2025/26 are projected to contract 5.4% to 20.148 million bags from 21.307 million in the prior year—a sign that supply tightness could eventually reverse price pressures if production stumbles or demand accelerates.