Peak-Season Shipping: GRI, Space and How to Plan Ahead

Every year, ocean and air freight go through predictable busy periods when space tightens and rates climb. If you import from China, understanding peak season — and planning for it — can save you both money and missed deadlines. Here is what happens and how to prepare.

When peak season hits

The classic ocean peak runs from roughly late summer into autumn, as retailers build inventory ahead of year-end holidays. A second crunch comes before Chinese New Year, when factories rush to ship before closing for the holiday and space becomes scarce. Air freight sees its own spike in the final months of the year. The exact timing shifts, but the pattern repeats.

The surcharges you will see

When demand outstrips space, carriers apply surcharges:

• GRI (General Rate Increase) — a broad rate increase applied across a trade lane, often announced with little notice and effective on a set date.
• PSS (Peak Season Surcharge) — an additional charge specifically tied to the peak period.

These can move your all-in rate up sharply and quickly, sometimes within a week. They are a normal feature of peak season, not a one-off.

Why space, not just price, is the problem

In a tight market the bigger risk is not the rate but getting space at all. Vessels fill, bookings get “rolled” to the next sailing, and equipment can be short. A rolled container can cost you a week or more — which matters far more than a surcharge if you have a deadline.

How to plan ahead

• Book early. The single most effective step. Give your forwarder more lead time during peak so space can be secured before it sells out.
• Forecast and communicate. Share your shipping plans with your forwarder in advance so capacity can be arranged, not scrambled for.
• Build buffer into deadlines. Assume transit times stretch in peak and add margin rather than cutting it fine.
• Consider alternatives. If ocean space is impossible, rail or a part-air solution may bridge a gap for time-critical goods.
• Be flexible on routing. A slightly different port or service can mean the difference between shipping now and waiting.

The bottom line

Peak season is predictable, so it can be planned for. The shippers who sail through it are the ones who book early, forecast their volumes, and leave buffer in their schedules — while those who leave it late pay more and still risk delay. Talk to your forwarder before the rush, not during it.