The front-loading is over. Now the ports find out what normal looks like

The surge that carried US container ports to a record summer is receding, and the second half of the year is shaping up to be far quieter than the first.

The early peak season is winding down, as the retailers who accelerated imports to get ahead of new tariffs run out of reasons to keep pulling cargo forward. For months the calculus was simple: bring it in now, before the duties bite. That window has closed, and the volume that was borrowed from the autumn has already landed.

The scale of what is ending was extraordinary. Industry forecasts had major US ports pushing toward an all-time monthly record, and the Port of Los Angeles alone cleared more than a million TEU in June. The gateways absorbed it without the congestion that defined the pandemic years, a sign the system has slack it lacked in 2021. The pressure this cycle came through rates and tariffs, not backed-up berths.

The rate picture, for now, is defying the seasonal logic. Rather than collapsing as front-loaded demand fades, transpacific spot rates have found support from an unusual pair of forces: a run of Pacific typhoons disrupting sailings and bunching vessels, and a wave of AI-linked and electronics demand keeping high-value boxes moving. Carriers, sitting on chronic overcapacity, have seized the disruption to make rate increases stick where the fundamentals alone would not.

The tension defines the outlook. Underlying import demand is set to slide from August as the tariff-driven rush unwinds, yet weather and a few resilient cargo categories are propping up prices in the near term. Neither force is durable. Once the storms pass and the pulled-forward inventory clears, the market is left with the same problem it started the year with: too many ships, and no longer enough cargo to fill them.