Climate shock as a core macro risk
Anthony Nyong, the African Development Bank‘s Director for Climate Change and Green Growth, told Reuters that a possible super El Niño could reduce output by about $10 billion to $20 billion across the continent. He said heavily affected countries could see GDP fall by 1% to 2% on average, equivalent to about $10 billion to $20 billion across the continent, underscoring how extreme weather is now a direct sovereign risk factor.
The AfDB already estimates that African agricultural losses are estimated at around $327 million, even before any full “super” El Niño effect is felt. Nyong warned that food insecurity may worsen further as key staples such as maize face supply shocks.
As climate shocks build, the AfDB expects humanitarian pressures to intensify. Nyong said that worsening food insecurity is likely to drive mass migration from hard-hit areas, as rural populations move in search of food, work and safety.
The climate finance trap and adaptation gap
Nyong warned that the looming El Niño shock comes on top of a “climate finance trap” across many African countries. Limited fiscal capacity forces governments to divert scarce funds from healthcare, education and long-term infrastructure into emergency disaster response and reconstruction. As a result, each major climate event can push economies “two steps back”, undermining development gains and increasing poverty risk.
This shift has direct implications for debt sustainability and banking sector resilience. The AfDB warned that a severe El Niño could damage infrastructure and raise pressure on public finances as governments increase borrowing to fund relief and rebuilding, adding stress to already constrained sovereign balance sheets. That dynamic matters for investors, as climate-linked shocks become a key driver of credit spreads, default risk and demand for contingent financing.
He signalled that the AfDB stands ready to restructure projects and help countries mobilise additional climate finance from mechanisms such as the Green Climate Fund, the Adaptation Fund, the Climate Investment Funds and emerging loss-and-damage facilities.
Nyong framed the choice bluntly: investing upfront in resilience is cheaper than paying for repeated disaster response. He argued that governments and financiers should prioritise building resilience now, rather than fund costly disaster response after each shock.
For investors, the AfDB El Niño warning signals that climate volatility is now a structural part of Africa’s macro environment. Sovereign and corporate risk assessments will need to integrate El Niño sensitivity, food security exposure and adaptation capacity, while new opportunities are likely to emerge in climate-resilient infrastructure, agriculture technology and risk-transfer solutions. Over the coming year, the key watchpoints will be the strength of the El Niño event and how quickly climate risk is priced into African debt and equity markets.
