Annual shutdowns you can’t ignore

TL;DR: If you manage inventory, your calendar matters more than what most people think.

Some disruption comes from supplier shutdowns. Some comes from demand spikes. Some comes from freight delays, warehouse pressure, or suppliers going quiet at exactly the wrong time.

Planning ahead gives you more options to protect availability, avoid stockouts, and stay ahead of any surprises.

Here are the annual periods worth planning around, starting in August.

August: European summer shutdowns

August can be a problem if you rely on suppliers in parts of Europe. Some factories reduce operations, close for summer holidays, or run with limited staff.

The risk is simple. You miss the ordering window, stock gaps appear, and you spend the next few weeks trying to recover. Check supplier closure dates early, confirm final order dates, and review the SKUs that would hurt most if they ran short.

September: Q3 stock planning

September is when Q3 pressure starts to build. Even if demand has not peaked yet, suppliers, carriers, and warehouses are already preparing for the busiest part of the year.

This is the time to check lead times, confirm supplier capacity, review forecasts, and make sure your key items are not relying on last-minute replenishment. If stock needs to be available in October, November, or December, the planning should already be active.

Late September and October: Golden Week

If you source from China or move freight through China, Golden Week needs to be in your planning calendar.

Factories, warehouses, documentation teams, trucking providers, and other services can run at reduced capacity or close during the holiday period. The issue is not just the holiday itself. The days before and after can also be affected by backlogs, tight capacity, and slower communication.

Confirm production dates, cargo-ready dates, shipping documents, and priority SKUs before the final rush.

October: Halloween

Halloween is not usually a supplier shutdown problem. It is a demand timing problem.

Seasonal items can move quickly before the event and slow down sharply after, which makes forecasting harder. Under-order and you miss demand. Over-order and you are left with stock that becomes much harder to sell once the season ends.

The key is to separate true seasonal items from products that keep selling after Halloween, and treat them differently in your forecast.

October and November: Diwali

Diwali can create a demand spike and a capacity issue, especially if you work with suppliers, manufacturers, or logistics partners in India.

Demand can rise before the festival, while staffing in manufacturing, logistics, customs, airports, ports, and trucking can be reduced during the holiday period. This can slow production, shipping, and delivery.

Plan production earlier, confirm supplier availability, and avoid assuming normal lead times during the festive period.

November: Black Friday, Cyber Monday, and Thanksgiving

November puts pressure on almost every part of the supply chain.

Black Friday and Cyber Monday can create sharp demand spikes. Thanksgiving adds extra pressure in the US due to the increased demand in food, retail, ecommerce, warehousing, and transport.

For planners, the key questions are simple. Which SKUs are most likely to spike? Which ones can be replenished quickly? Which ones need protection because lead times are too long? Which suppliers or carriers are already at capacity?

By November, fixing a weak plan becomes much harder.

December: Christmas and New Year

Christmas creates a mix of demand spikes, supplier closures, warehouse pressure, transport cut-offs, and reduced staffing.

This is where small planning gaps become visible. A late purchase order, missed delivery slot, or optimistic lead time can quickly become a stockout. Planners should prioritise critical lines, check supplier working days, review delivery cut-offs, and avoid relying on emergency orders.

The goal is not to hold more stock everywhere. It is to hold the right stock where it matters.

January and February: Chinese New Year

Chinese New Year is one of the biggest annual supply chain events for companies sourcing from China and other parts of Asia.

The official holiday may look short on the calendar, but the real impact can last much longer. Production slows before the holiday, factories close, workers travel, communication becomes harder, shipping gets backed up, and operations take time to return to normal.

If you wait until January to plan, you are already too late. Use the months before the shutdown to forecast demand, talk to suppliers, confirm final order dates, and build cover for the items customers cannot wait for.

https://reddit.com/link/1vng5ro/video/kjh9zeox46jh1/player

Remember:

Most of these events happen annually with known dates. The problem is that they do not always get built into the plan.

Good inventory planning means checking the calendar before the disruption starts, not after the stockout happens.

Read our guide to seasonal demand forecasting and be prepared for any disruptions: How to manage inventory with seasonal demand | EazyStock