Wall Street is beginning to price in a climate force that can be predicted months in advance. Jefferies is warning that if fears of a 2026-27 super El Nino materialize, a group of consumer stocks will bear the brunt—and the unique aspect of this storm is that, unlike most climate risks, El Nino can be precisely tracked months before it makes landfall, giving investors a clear window to identify exposed assets before the full economic fallout unfolds.

A potentially historic super El Nino is brewing. Current forecasts suggest the 2026-27 El Nino could become the strongest in modern history. The World Meteorological Organization (WMO) issued a bulletin on September 3 confirming the El Nino event has formed and is expected to intensify into a super El Nino within months. The U.S. National Oceanic and Atmospheric Administration (NOAA) puts the probability of reaching "super" strength between October and December at 81%, with odds exceeding 90% for "very strong" levels. When sea surface temperature anomalies in the equatorial Pacific's Nino 3.4 monitoring region exceed 2°C, meteorologists classify it as a super El Nino—only three events on record (1982/83, 1997/98, 2015/16) have reached this threshold, with the 1997/98 event earning the nickname "Godzilla" for its devastating impact. The European Centre for Medium-Range Weather Forecasts (ECMWF), NOAA, and the Australian Bureau of Meteorology's ensemble models are currently converging on a potential anomaly of +3°C—if realized, it would rival or even surpass the 1997/98 record. For agricultural markets, the historical pattern is simple and unforgiving: statistics show that every strong El Nino over the past 55 years has been accompanied by cocoa production declines.

Where to focus first: The cocoa chain

The most concentrated risk sits in West Africa, where Hershey Co (NYSE: HSY) and Mondelez International Inc (NASDAQ: MDLZ) are effectively betting on cocoa price deflation. Roughly 60% of global cocoa supply comes from Cote d'Ivoire and Ghana, and during strong El Nino years, West Africa's November-to-January harvest season historically trends hotter and drier—a direct hit to chocolate makers' cost structure. Jefferies analyst Scott Marks points out that Hershey carries highly concentrated cocoa exposure through its core U.S. chocolate business, and the company has built its 2027 margin recovery plan on expectations of cocoa price deflation. "Notably, a super El Nino that makes the 2026/27 West African crop season hotter and drier would undermine the pillars of this recovery narrative," Marks wrote. Mondelez's transmission path is identical: roughly 60% of its cocoa supply is concentrated in Cote d'Ivoire and Ghana, and strong events historically push producing regions toward high temperatures and dryness just before the harvest. The risk is that a super El Nino hitting the 2026/27 crop season threatens its margin recovery narrative. Supply-side alarms are already sounding. Ghana's national cocoa regulator projects 2026-27 production of just 450,000-550,000 tonnes, far below the 750,000 tonnes expected for 2025-26. Exporters in the country even warn output could fall by as much as 38% year-over-year. The world's largest producer, Cote d'Ivoire, has slowed sales of new 2026-27 main-crop contracts, with around 1 million tonnes of export contracts already sold. StoneX expects the global cocoa surplus to narrow sharply from roughly 422,000 tonnes this season to about 25,000 tonnes. New York cocoa futures are currently trading near $6,000 per tonne, having surged 14.1% in a single day in early July on El Nino risk repricing. Demand-side dynamics may not be as cooperative. Mondelez's chief cocoa officer, Darren O'Brien, said during the Singapore International Cocoa Conference that after cocoa prices spiked a few years ago, chocolate companies broadly reduced product sizes and increased use of substitute ingredients—even if demand recovers, the total amount of cocoa required may not rise proportionally. "Product specifications have changed. If chocolate bars are smaller, naturally there's less cocoa available," he said. Demand in Europe, the largest consuming region, remains weak, and while Asia's second-quarter processing volumes jumped 25%, this reflects recovery signals more than robust expansion.

Second area of concern: The coffee chain

Smucker's (NYSE: SJM) El Nino exposure flows through its coffee portfolio—its procurement is simultaneously exposed to Brazilian arabica and Vietnamese and Indonesian robusta. The coffee market is currently in a tug-of-war: low certified arabica inventories on ICE exchanges provide support, but record Brazilian export flows and improving flowering weather pushed the New York December arabica contract back below 288.15 cents per pound on September 10, while the November robusta contract bucked the trend to close at $3,458 per tonne. For Smucker, if Asian producing regions shift toward drought in the coming months as models predict, the risk from the robusta leg is only beginning to be priced in.

Third focal point: Retail and dining demand shocks

Jefferies' list extends beyond commodity costs. PriceSmart Inc (NASDAQ: PSMT) derives roughly 11% of its sales from Colombia, with operations spanning Central America, leaving it exposed to weather disruptions, supply chain interruptions, and weaker discretionary spending in affected markets. Analyst Pedro Baptista offered the most measured assessment on the list: "While individual warehouse clubs may experience temporary operational disruptions, historical events suggest demand is often deferred rather than lost, and the membership model alongside resilient consumer positioning will support recovery." Yum China Holdings Inc (NYSE: YUMC) faces risk from three angles: analyst Anne Ling notes that extreme rainfall, flooding, and severe weather could temporarily reduce in-store dining traffic—particularly in affected regions—and disrupt logistics and delivery efficiency. Meanwhile, restaurant operators may face rising prices for key agricultural inputs. Coca-Cola FEMSA S.A.B. de C.V. (NYSE: KOF) carries sugar chain exposure: analyst Alex Wright emphasizes that if sweetener costs surge faster than pricing actions, margins will come under pressure. Raw sugar futures for October delivery rose to 18.4 cents per pound last week, with higher oil prices boosting sugarcane ethanol demand and adding fuel to sugar prices.

The climate pendulum continues to swing. Barclays warns this extreme weather could push up prices across a range of commodities, while WMO and NOAA models keep revising intensity expectations upward each month. For buyers of chocolate, coffee, and sugar, the gap between record sea temperatures and empty store shelves spans two harvest seasons—Jefferies' list is the advance warning investors need.