El Niño 2026 strengthened across the equatorial Pacific in August, putting farmers, agribusinesses and commodity markets in the United States and Latin America on alert as a critical 2026/27 crop season approaches. On August 13, NOAA's Climate Prediction Center reported a greater than 90% chance that El Niño will become a very strong event during the Northern Hemisphere fall and winter of 2026-27. The development matters across the Americas because changes in rainfall and temperature could affect crops, livestock, water availability, logistics and agricultural trade.

Ocean conditions already show substantial warming. According to NOAA, July sea surface temperature anomalies reached +1.4°C in Niño 3.4, +1.7°C in Niño 3 and +2.9°C in Niño 1+2, while anomalies exceeded +2°C across parts of the eastern equatorial Pacific. Westerly wind anomalies at lower atmospheric levels also extended from the western to east-central Pacific. Taken together, NOAA says these oceanic and atmospheric signals reflect a strengthening, coupled El Niño system that is expected to continue intensifying through the end of 2026.

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The potential magnitude of the event is attracting particular attention. NOAA currently estimates a 69% chance that El Niño could reach historic strength during October-December 2026, exceeding previous events dating back to 1950 under its Relative Oceanic Niño Index, or RONI, framework. Yet the agency also stresses an important distinction for agriculture: a stronger El Niño increases the likelihood of typical El Niño-related impacts, but does not guarantee drought, flooding, heat or crop losses in any specific farming region. Local and seasonal forecasts remain essential.

From the U.S. Farm Belt to Latin America: One El Niño, Different Agricultural Risks

For U.S. agriculture, attention is shifting from Pacific Ocean temperatures to how El Niño may influence regional weather during the fall and winter. NOAA's latest seasonal outlook favors above-normal temperatures across much of the western and central United States during September-November, while precipitation patterns vary by region. Farmers and markets will closely monitor conditions affecting corn, soybeans, wheat, cotton, cattle and specialty crops, as well as soil moisture and the weather setup heading toward the next planting season.

Across Latin America, the picture is considerably more complex. Argentina, Brazil, Paraguay and Uruguay will be watching rainfall distribution and soil moisture during the 2026/27 crop season, particularly across soybean, corn, wheat, rice and livestock-producing areas. Peru and Ecuador face a different exposure to conditions in the eastern Pacific, while northern South America has historically experienced below-average rainfall during El Niño. The key message for producers is clear: there is no single El Niño forecast that applies uniformly across Latin America.

Central America and the Caribbean are among the agricultural regions facing heightened risks. A recent FAO assessment based on 41 years of satellite imagery identified agricultural and pasture areas in Central America's Dry Corridor and the Caribbean where the historical probability of drought during strong and very strong El Niño events exceeds 50%. FAO warns that these conditions can contribute to crop failures, livestock losses and greater pressure on rural livelihoods, making early action particularly important for vulnerable agricultural communities.

The risks extend well beyond farm yields. The United States and Latin America are deeply interconnected through agricultural value chains and trade flows, spanning grains, beef, coffee, sugar, fruits, vegetables and other food products. Weather disruptions can affect export availability, transportation costs, port and road infrastructure, livestock feed costs and ultimately FOB and CIF prices. For agricultural commodity markets, the outcome will depend not simply on the strength of El Niño, but on where production losses or gains occur and whether other major producing regions can offset them.

El Niño 2026 Could Reshape Agricultural Trade Across the Americas

The trade dimension is particularly relevant for the U.S. agricultural market. Mexico, Central America and South America are simultaneously suppliers, customers and competitors of U.S. agriculture across multiple food and commodity markets. Weather-driven production changes can redirect trade flows, alter comparative advantages and create new import requirements or export opportunities. That makes El Niño another strategic variable for agribusinesses already managing freight costs, trade policy, tariff and non-tariff barriers, food safety standards and shifting global demand.

Markets for corn, soybeans, wheat, coffee, cocoa, sugar and animal proteins will be among those watching weather developments closely. But a very strong El Niño does not automatically mean higher commodity prices. Price reactions will depend on the location and scale of production disruptions, global inventories, competing harvests and international demand. FAO has already warned that the persistence of El Niño into early 2027 increases the risk of extreme weather and adverse impacts on agricultural production, including dry conditions in parts of Central America.

There is another factor that makes the 2026 event particularly important. El Niño is developing against the backdrop of a warmer global climate. FAO noted in July that a strong El Niño interacting with a hotter and less predictable climate can intensify agricultural exposure to extreme heat. High temperatures can disrupt planting, damage crops, increase livestock heat stress, reduce fisheries production and create additional risks for farmworkers. The combination of heat, drought, humidity and changing rainfall patterns therefore deserves as much attention as Pacific Ocean temperatures themselves.

For farmers and agribusinesses on both sides of the hemisphere, early planning, precision agriculture and climate intelligence will become increasingly valuable. Soil-moisture monitoring, seasonal forecasts, planting dates, seed and variety selection, water reserves, livestock feed inventories, crop insurance, financing and digital agriculture tools can help reduce exposure. FAO emphasizes that one advantage of El Niño compared with sudden-onset disasters is that it can often be anticipated months ahead, creating time to protect crops, livestock, water resources and agricultural infrastructure.

El Niño 2026 has moved beyond a climate story to become an agricultural and market variable for the entire Western Hemisphere. From the U.S. Farm Belt to the Southern Cone, and from California to the Andes and Central America's Dry Corridor, producers face the challenge of interpreting a global climate signal that will produce very different regional outcomes. With NOAA forecasting more than a 90% chance of a very strong event, the decisive question is no longer whether El Niño is strengthening, but where and when its weather impacts will emerge - and how prepared U.S. and Latin American agriculture will be to manage them.