A Super El Niño could raise South Africa's maize prices. The bill would arrive late, and start with feed.

Early in October, a widely republished article by two North-West University economists asked how a Super El Niño could affect South Africa's maize prices. The question is fair: the US Climate Prediction Center put the chance of a “historic” El Niño at 83% for October to December 2026.

It could raise prices. But not this year, and not first in maize meal.

A headline about grain prices is narrower than it sounds. What matters to a household or a business is when a shock reaches the shelf, through whom, and for how long.

We traced that path link by link, from the weather signal to crop and stocks, the futures price, the mill, the shelf, household budgets and consumer demand. We used official crop estimates, the industry's supply and demand balances, the Competition Commission's price monitoring, Treasury and Reserve Bank papers and peer-reviewed studies, and we checked each against three earlier El Niño episodes. Every source was read on the page on 12 October 2026.

The first finding is about timing. South Africa harvested a record 17.52 Mt of maize in 2026, which leaves projected stocks of about six months of use at the end of April 2027. That buffer protects the current marketing year. A drought this summer would hit the 2027 harvest, so the year at risk is May 2027 to April 2028. Shelf prices have historically followed grain by about three to four months, and up to nine. On our working estimate from two past episodes, the shelf-price peak would come roughly 13 to 29 months after El Niño sets in.

Where the starting point is strong

Food inflation was 1.1% in August 2026, and a 30 kg bag of maize meal cost 11% less in September than a year earlier. Drought is probable, not certain: the very strong 1997/98 event did not produce a severe one. And because the chain is slow, the warning time is long. Planting intentions are published on 27 October 2026, and the first 2027 crop forecast follows early next year.

Two things surprised us

We also tested our own starting assumption that a food-cost shock of this kind travels quickly to household budgets. The evidence did not support it. Exposure is real, and it is regressive: food is over 30% of spending for the poorest tenth of households. But it arrives late and recedes slowly. Part of the middle of the chain has also gone dark: the official maize-meal spread series stopped after May 2024, so how much of a shock millers and retailers absorb can no longer be read from public data.

Our view, for what it is worth

The risk in this El Niño is less a sudden price spike than a misdated plan. Attention is on maize prices now, and the shock, if it comes, would land in 2027/28, after that attention has moved on. Before acting, a decision-maker in food, retail or consumer credit could ask:

These are questions, not advice, and the answers sit with you. If the public record misses something you know, we would like to hear it.