El Niño: Why Global Agriculture Is Entering a New Era of Water Stress

In 2024, more than 60 million people were affected by climate impacts linked to El Niño, according to the FAO⁴. In Southern Africa, nearly 45% of maize-growing areas suffered major losses in some regions. International climate agencies are already warning that the phenomenon could return as early as 2026¹.

For agriculture, the message is clear: extreme weather events are becoming more frequent, more intense, and harder to predict. Droughts, erratic rainfall, heatwaves, and water stress are no longer occasional disruptions. They are becoming structural risks for broad acre crops.

El Niño: A Natural Climate Pattern with Global Agricultural Impacts

El Niño is a naturally occurring climate phenomenon driven by the abnormal warming of surface waters in the tropical Pacific Ocean. It is part of the ENSO cycle (El Niño Southern Oscillation), which alternates between warm phases (El Niño), cool phases (La Niña), and neutral conditions.

Although the phenomenon originates thousands of miles away from European farmland, its effects are felt worldwide. As Pacific Ocean temperatures rise, weather patterns become disrupted: some regions experience excessive rainfall, while others face prolonged water shortages and drought conditions.

For agriculture, these disruptions often translate into drought periods, uneven rainfall distribution, and increased water stress during critical crop development stages.

As NOAA notes³: “El Niño alters temperature and precipitation patterns across the globe.”

In other words, no agricultural region is completely insulated from its impacts.

Why El Niño Is Becoming More Disruptive in a Warming Climate

El Niño is not a new phenomenon. Major events such as those of 1997-1998, 2015-2016, and most recently 2023-2024 have already left a significant mark on global agriculture. What is changing today is the climate context in which these events occur.

For growers, this means greater climate variability from one season to the next, but also increasing uncertainty within the same growing season.

Historical weather patterns are becoming less reliable. Planting windows, rainfall timing, and critical crop development stages are becoming increasingly difficult to predict and manage.

As the FAO highlights⁴: “Agricultural drought is becoming a major threat to global food security.”

Maize, Wheat, Soybeans, and Sunflowers: Crops on the Front Line of Water Stress

The most immediate impact of El Niño on crop production is often linked to water availability, or more precisely, the lack of it.

Across many agricultural regions, the phenomenon can delay the onset of seasonal rainfall, disrupt precipitation during critical growth stages, and drive unusually high temperatures that intensify water stress on crops.

Beyond yield impacts, El Niño also disrupts crop management schedules. Some growing seasons begin with delayed planting due to insufficient soil moisture, while others are marked by alternating periods of excessive rainfall and drought within the same season.

This increasing unpredictability is becoming a major agronomic challenge.

According to several international studies, ENSO accounts for up to 18% of global maize yield variability⁷.

This figure highlights just how strongly global climate patterns now influence on-farm performance and production outcomes.

Late Summer 2026: Water Stress Risks Already Emerging Across Major Agricultural Regions

Recent seasonal outlooks point to an elevated risk of heat and water stress across several of the world’s key agricultural production areas.

In Europe, projections from the Copernicus Climate Change Service (ECMWF)¹¹ indicate a high probability of above-average temperatures across much of Western and Central Europe between June and August 2026. In parts of Central, Eastern, and Southern Europe, the likelihood locally exceeds 60% to 70%.

These conditions could intensify water deficits during critical growth stages for maize, sunflower, and soybean crops, particularly during flowering and grain filling. Several European weather analyses have also highlighted the potential development of a “heat dome”, a weather pattern capable of trapping hot, dry air masses over agricultural regions for extended periods.

In the United States, NOAA forecasts¹² also point to above-normal temperatures across portions of the Midwest and Great Plains during the summer of 2026, with drought risks that could affect maize and soybean crops during key developmental stages.

These outlooks should not be interpreted as precise local weather forecasts. However, they reinforce a trend that is becoming increasingly clear: periods of excessive heat and water stress are becoming more likely across the world’s major crop-producing regions, precisely when crops are at their most physiologically vulnerable.