If you’ve been walking through the supermarket lately, you might have been surprised to see speculoos, gingerbread, and chocolate-covered spice cakes popping up between the ice cream, barbecue supplies, and other summer products.. Christmas? In August?

While it feels surprisingly early to many people every year, it’s a perfect illustration of how seasonal logistics work. For holiday treats and other seasonal items to hit the shelves on time, production, procurement, and transport must begin long before the Advent season starts. This lead time is even more critical for goods coming from overseas. Production, transport to the port, ocean freight, potential transshipments, customs, inland transport, and warehousing all take time.

So, while we are still enjoying the summer, Christmas is already well on its way through many supply chains. That is why, in the world of logistics, Christmas often begins in the summer..

Planning backward from the sales date

For consumers, Christmas is still months away. For retailers and importers, however, December is merely the end of a much longer chain. After all, Christmas merchandise doesn't need to be available on December 24th. Advent calendars must be in stores by December 1st at the latest, decorations are purchased much earlier, and many Christmas gifts end up in shopping carts around Black Friday and the subsequent holiday shopping season.

Logistics planning therefore makes the most sense when you start with the desired availability date and work backward from there.

When must the goods be in the warehouse?

When must they arrive at the port?

When must the ship depart?

When must the container be packed?

And when must production be completed?

The longer and more complex the supply chain, the earlier these questions must be answered.

Production comes before transport

Before a container can even begin its journey, the goods must be manufactured and ready for shipment. Many consumer goods are sourced via international supply chains. Production times, raw material availability, packaging, and quality control are therefore just as much a part of the schedule as the actual transport. Afterward, the goods must travel from the production site to the export port, be delivered on time, and be prepared for shipping.

Only then does the phase that many people associate with international logistics begin: the sea voyage. By that point, however, weeks may have already passed.

Ocean freight takes time

A container from Asia doesn't reach Europe in just a few days. The actual transit time depends on factors such as the departure and destination ports, the chosen route, and the shipping line's schedule. Furthermore, ocean freight involves much more than just the time spent on the water.

The entire transport chain can include:

• Pre-carriage to the export port
• Delivery to the terminal
• Adherence to the respective cut-off times
• Loading onto the vessel
• Ocean transport
• Potential transshipments
• Unloading at the destination port
• Import and customs clearance
• Availability of the container
• On-carriage to the warehouse or recipient

This turns a multi-week sea voyage into an even longer total delivery time. This is precisely why well-prepared retailers move a portion of their year-end inventory by sea freight as early as the summer months.

Why cut-offs are so important

Securing a spot on a booked shipping route does not automatically guarantee that a container will actually be transported on that departure. Various deadlines must be met before shipment. For example, the container must be delivered to the designated terminal on time, and all necessary information must be provided within the specified requirements.

If a relevant cut-off is missed, the planned departure may no longer be possible. For standard goods, a later departure is annoying. For seasonal goods, it can be significantly more problematic. A Christmas item that only arrives at the warehouse after Christmas may have already missed its critical sales window.

With seasonal goods, it is therefore not just a matter of whether they arrive, but when.

When everyone wants to ship at the same time in autumn

The Christmas season naturally affects more than just one company. Many retailers and manufacturers prepare for the year-end business simultaneously. This increases the demand for production, transport, and storage capacities. The availability of capacity along the entire supply chain is one of the key challenges during seasonal peaks.

For shippers, this means that transport should ideally not be organized only when the finished goods are already sitting outside the factory. The earlier volumes, time windows, and transport routes are known, the better suitable solutions can be planned. This is especially true when large volumes need to be moved within a relatively tight timeframe.

Buffer time is not wasted time

Planning a supply chain as tightly as possible may look efficient on paper. In reality, however, there are numerous factors that can only be influenced to a limited extent:

• bad weather
• port congestion
• schedule changes
• missed connections
• strikes
• customs inspections
• technical malfunctions
• delays in pre-carriage or on-carriage

Not every one of these events will occur. However, planning without any time buffer assumes that everything will function as intended throughout the entire transport chain. Especially with time-critical seasonal goods, a realistic buffer can therefore be more important than the theoretically shortest transit time.

The goods are at the port – but not yet on the shelf

The journey does not end when the ship arrives. The container must first be unloaded and made available. Depending on the shipment, import clearance and, if necessary, further inspections follow. Subsequently, the on-carriage must be organized. Only then do the goods reach a central warehouse or distribution center, for example.

Further steps may follow there:

• unloading
• incoming goods inspection
• storage
• order picking
• distribution to branches or other locations

A ship's ETA is therefore not the same as the date a product is actually on the sales shelf. This time must also be taken into account during planning.

What happens if the Christmas merchandise arrives too late?

For many products, a delay primarily means a longer wait. For seasonal goods, however, the situation is different. A product without a fixed sales window can often still be sold regularly a few weeks later. An advent calendar that arrives in mid-December, on the other hand, has an obvious problem.

The tighter the sales window, the more important reliable scheduling becomes. If significant delays occur during transport, it is worth evaluating whether alternative solutions are practical and economically viable.

Depending on the goods and the situation, these may include:

• an alternative shipping route
• a different port of departure or destination
• splitting the shipment
• switching the mode of transport for particularly urgent partial quantities

It is not always necessary to move the entire shipment to a faster and significantly more expensive transport route. For suitable goods, it can be checked, for example, whether only a particularly urgent portion is transported faster, while the rest follows via the originally planned route.

Christmas is just one example

The principle naturally applies to more than just Christmas items. Other seasonal products also have fixed or at least limited sales windows:

• Easter items
• Garden and leisure products
• Summer fashion
• School supplies
• Halloween products
• Winter sports equipment
• Promotional and campaign merchandise

In addition, there are goods for events, trade fairs, or campaigns where a specific date cannot simply be postponed. For all these products, the following applies: The delivery date is not just a logistical metric – it can be a decisive factor in economic success.

Planning early means staying in control

The earlier a seasonal supply chain is planned, the more options you have. When volumes, production times, and required delivery dates are known early on, you can compare transport routes, plan capacities, and factor in realistic time buffers. This isn't about predicting every possible disruption—that’s nearly impossible in international supply chains. It’s about creating enough flexibility to react when things don't go according to plan.

That is exactly why logistical preparations for Christmas begin long before most of us are thinking about Advent, gifts, or Christmas trees. So, those first boxes of speculoos cookies in the supermarket might not be as early as they seem. The supply chain behind them was simply ahead of the game..‍