Cold chain in the heat: Managing perishables in a South African summer
In South Africa’s summer months, the demand for fresh food, beverages, and critical medicines peaks – just as rising temperatures and power interruptions put extra pressure on logistics networks. Supply-chain professionals must ensure the cold chain stays intact through heat waves, load shedding, and long transport routes.
The cold chain is the temperature-controlled process that keeps perishable goods at the right temperatures as they move from point A to point B. Cold chains are often delicate, meaning that one break in the chain can lead to stock loss, a decrease in medical effectiveness and even the collapse of an entire food supply. This, in turn, poses a financial loss, reputational risk and consumer safety threat to many industries, like retail, agriculture and pharmaceuticals.

Innovation meets insulation
To combat the threat of the South African summer heat, businesses have had to become innovative. Many of them use advanced insulation materials, like vacuum panels and phase-change materials. Some have also chosen to use solar-powered refrigeration units, which not only are a reliable source when there are power cuts but are also eco-friendly.
The use of IoT-enabled sensors and real-time data platforms now allows companies to monitor shipment temperatures at every step. For instance, if a delivery truck’s temperature rises above the safe range, alerts are triggered so teams can take quick corrective action to protect the products and cargo. Tools like these enhance product integrity and create transparency across the supply chain. The CSIR continues to research how digital innovation strengthens logistics resilience in Africa.

Last-mile challenges and local adaptations
The “last mile” – getting products from the distribution centres to consumers – is where the cold chain is most at risk. This vulnerability is especially pronounced in rural and high-traffic urban areas. To address it, companies are adopting innovative solutions such as insulated lockers for grocery deliveries, compact mobile fridges for informal traders, and route optimisation software to reduce transit times.

For supply chain professionals, mastering cold-chain management is a strategic advantage. The BCom in International Supply Chain Management from IMM Graduate School of Marketing equips students with the analytical, technical, and ethical decision-making skills needed to manage complex supply chains across every stage of the supply chain.
The programme integrates global logistics, sustainability, and innovation to help you meet real challenges such as heat-sensitive product handling, cross-border compliance, and digital transformation across the supply chain.
As climate patterns shift and consumer expectations rise, the future of cold chain management in South Africa depends on smart logistics, resilient infrastructure, and forward-thinking professionals who can keep their cool, even when the temperature doesn’t.