This summer’s heatwaves have been impossible to ignore. They are also placing pressure on the infrastructure and operations that keep goods moving. For supply chains, extreme heat can disrupt purchasing patterns, workforce availability, inventory flows and delivery performance.
A warehouse manager may need to alter shifts or introduce additional breaks, while transport teams reroute vehicles around congestion or infrastructure disruption. For supply chain leaders, the question is no longer whether weather-related disruption will occur, but how quickly operations can adapt when it does.
How extreme heat disrupts every link
Heatwaves can create interconnected challenges across procurement, inventory, warehousing, transportation and fulfilment.
Consumer behaviour can change rapidly as temperatures rise. Demand for bottled water, ice cream, fans and air-conditioning units can increase sharply. Retailers and manufacturers may need to reposition inventory, change replenishment priorities and direct capacity towards products experiencing unexpected demand.
At the same time, the supply side can come under pressure. Delayed inbound shipments, reduced warehouse productivity and transport disruption can create bottlenecks that compound one another. A delayed delivery to a distribution centre, for example, can affect inventory availability, picking schedules and ultimately customer commitments.
The challenge is not simply predicting when a heatwave will occur. Weather forecasts can provide warning, but the real test is turning that information into timely decisions before small disruptions become larger ones.
When warehouses reach their limits
Distribution centres are particularly vulnerable during periods of extreme heat. Equipment, automation and densely stored inventory can contribute to higher internal temperatures, while safe working conditions may require additional breaks, task rotation, altered shifts or changes to workloads.
Those measures are essential for protecting employees, but they can also reduce operational capacity. The World Health Organisation and World Meteorological Organisation estimate that worker productivity decreases by 2% to 3% for every degree increase beyond 20°C in Wet-Bulb Globe Temperature, a measure of heat stress.
Heat can also place demands on equipment. Battery-powered vehicles and automated systems may require closer management, forcing warehouse leaders to balance throughput with safe operating conditions. Resilience depends on the ability to continually rebalance labour, inventory and priorities as circumstances change.
Transport networks under pressure
The same pressures extend across transportation. Extreme temperatures can increase vehicle breakdown risks, place additional demands on refrigerated fleets and contribute to disruption across road and rail networks. Refrigerated vehicles may consume more energy to maintain required temperatures, while drivers may need more frequent breaks and rail operators can introduce restrictions when infrastructure is affected.
For organisations operating just-in-time models or promising narrow delivery windows, even minor delays can have downstream consequences. When plans change, supply chain teams need to reassess priorities, allocate constrained capacity and communicate realistic expectations to customers quickly.
From visibility to intelligent action
Organisations now have far greater visibility into their operations. They can monitor warehouse activity, track inventory, identify delayed shipments and gain near-real-time operational insight.
But visibility alone does not solve disruption. Knowing that productivity is falling, a shipment is delayed or transport capacity is constrained only creates value when teams can determine what needs to change and coordinate the appropriate response.
This is where intelligent supply chain execution becomes increasingly important.
Supply chains were traditionally optimised around efficiency and predictable conditions. Today, they need to sense what is happening, determine the best response, act quickly and learn from the outcome.
Artificial intelligence can support this shift by analysing operational information alongside demand patterns, inventory positions, transport constraints and external factors such as weather. This can give supply chain teams earlier insight into emerging risks and help them assess potential responses more quickly, while keeping people responsible for important decisions.
Building resilience for a more volatile climate
Climate volatility is becoming another factor supply chain leaders must incorporate into their planning, alongside geopolitical uncertainty, workforce pressures and changing behaviour.
Heatwaves, cold spells and heavy rainfall should not be viewed solely as isolated events requiring individual contingency plans. They test an organisation’s ability to adapt when normal operating assumptions no longer hold.
The supply chains best equipped to handle this environment will be those capable of adjusting continuously as conditions evolve.
That means connecting decisions across procurement, inventory, warehousing and transportation rather than allowing each function to respond independently.
Businesses cannot control the weather, but they can control their preparedness. Organisations that can spot emerging risks, make informed decisions quickly and coordinate action across their operations will be better placed to protect service levels when disruption strikes.
By Tim Moylan, Chief Growth Officer, Infios
- Procurement Strategy
- Sourcing & Procurement