Hot Times for Mexican Agriculture

This winter reminded Mexico how quickly heat can show up out of season. Weather agencies now warn that 2025 ranked among the hottest years on record, and seasonal outlooks point to elevated heat risk heading into spring across parts of North America. Mexico should treat early warmth as a signal, not a surprise.

Sustained high temperatures do not only strain public health. Heat also pushes farms toward biophysical limits. Wheat shows the stakes clearly. Research reviews estimate that global wheat production can drop by about 6% for each additional 1°C of warming under many conditions, and heat stress often erodes grain quality alongside yield. Heat also compresses growing seasons by speeding crop development, so farmers lose time to build yield.

That reality is a challenge for Mexico’s renewed push for food sovereignty. President Claudia Sheinbaum has put “soberanía alimentaria” (food sovereignty) at the center of a national agenda that aims to raise domestic production and make healthy food more affordable. Food sovereignty requires production, and production now requires resilience to heat and drought.

Heat waves already pressure agrifood systems across North America. In northern Mexico, farmers face rising water stress that challenges the long-term viability of intensive production systems. In the south, climate variability and soil degradation compound the risks for smallholders. When yields swing and soils degrade, families often respond with distress migration, piecemeal crop changes, or short-term coping strategies that do not always pay off.

Those consequences extend beyond agriculture. When smallholder farms weaken, incomes fall and local employment contracts. Communities lose social and economic cohesion. Cities then feel the shock through prices, supply volatility, and political stress. Mexico’s countryside and Mexico’s cities share the same food system, and heat now tests the whole system at once.

Mexico is not the only country looking for ways to adapt agrifood systems to high temperatures, and it’s a reminder that food sovereignty doesn’t have to mean isolation. Saudi Arabia’s Ministry of Environment, Water, and Agriculture, for example, runs the Saudi Agrifood Tech Alliance, along with King Abdullah University of Science and Technology, which is harnessing new technologies, such as precision agriculture, nanotechnology, and biopesticides to the challenge to arid farming. The Indian Council of Agricultural Research has a Central Arid Zone Research Institute, and Australia’s Future Drought Fund invests in drought resilient farming, while the Grains Research and Development Corporation focuses on heat and drought-resilient seeds. Mexico can collaborate with partners in these places while building solutions rooted in its own landscapes and food traditions.

Closer to home, the United States has a vested interest not only in heat and drought resilient crops at home, but also in Mexico. The interdependence of agrifood systems in the two countries is clear. A significant share of the wheat grown in the United States contains genetic material developed in Mexico. Maize and wheat supply chains constantly cross the border. Mexico is the single most important foreign supplier of fresh fruits and vegetables to the United States, and the two countries’ horticultural supply chains are tightly integrated. Productive resilience to heat in Mexico and the United States directly contributes to regional food stability.

That interdependence helps explain a recent US government decision to provide new support to CIMMYT. Based in Mexico, CIMMYT has worked for decades on maize and wheat improvement, climate resilience, and farmer centered innovation. The new funding recognizes that science partnerships across borders strengthen regional food security.

CIMMYT has built a substantial national footprint in Mexico. Today, CIMMYT operates 46 agronomic research platforms in 16 Mexican states. These platforms test regenerative practices, water management strategies, improved varieties, and risk reduction approaches under real production conditions. They generate evidence that farmers, state governments, and federal agencies can use to guide decisions.

The Agro-Innovation Hubs model stands out because it links research, extension, and local institutions. Farmers participate directly in testing and adapting technologies. Scientists adjust recommendations based on field results. Policymakers draw on data generated within the country rather than imported assumptions. This approach narrows the gap between discovery and adoption at a moment when heat waves give producers less room for error.

Regional needs differ. In northern Mexico, farmers need heat tolerant varieties and highly efficient water use systems. In central regions, regenerative soil practices can improve moisture retention and buffer temperature extremes. In the south, productive diversification and strengthening systems such as the milpa can preserve biodiversity and cultural heritage while improving resilience.

Mexico can now scale what works. Plan México and the National Food Sovereignty Program provide political momentum. Institutions such as CIMMYT, public universities, state governments, and producer organizations provide technical capacity. Together they can strengthen responsible self-sufficiency, improve adaptability, and stabilize rural economies.

Extreme heat will shape the next decades of agricultural policy. Mexico can respond with collaboration on its own terms, with science, partnership, and investment in its farmers. When the country strengthens resilience in its fields, it strengthens economic stability, regional cooperation, and social cohesion at the same time.

Global food stability will depend on the collective ability to anticipate the impacts of extreme heat, manage water more efficiently, and ensure innovation reaches producers effectively. Investing in agricultural science, strengthening strategic alliances, and scaling knowledge infrastructure are the pathway to that destination.