Transpacific Freight Hits a Perfect Storm of Tariffs, Tides and Tight Capacity

What

Rates: Asia–U.S. East Coast spot rates hit a new 2026 high of $9,144/FEU, up 1% week-over-week, while West Coast rates jumped 11% to $6,826/FEU. Shanghai–New York rose 10% for a second straight week to $8,706/FEU. Carriers including CMA CGM, COSCO, Evergreen, HMM, Hapag-Lloyd, Yang Ming, and ZIM have already filed a further General Rate Increase for September 1, the seventeenth GRI of 2026 on the East Asia/USA lane, something that has been unheard of in a normal year.

Tariff and regulatory backdrop: The temporary 10% Section 122 import surcharge expired July 24, but a new 12.5% forced-labor-related Section 301 tariff on covered China-origin goods took effect the same day. Meanwhile, West Coast terminal operators (WCMTOA) raised the PierPass Traffic Mitigation Fee 4.77%, to $40.63/TEU and $81.26/FEU effective August 1. Separately, twenty-five states have sued the Trump administration over its latest round of global tariffs, adding legal uncertainty to the cost structure shippers are already budgeting around.

Panama Canal: Draft limits at the Neopanamax Locks have been cut in stages 49.5 feet in early July, 49 feet on July 24, and 48.5 feet from August 15 with El Niño-driven low water pushing canal slot auction prices to roughly $1.1 million a day, over 16 times last year's level. MSC, CMA CGM, and Hapag-Lloyd have each rolled out separate Panama Canal surcharges of $100–$320/TEU on East and Gulf Coast cargo, with different effective dates and scopes.

Why

The common thread is that every aspect of the system is now compensating for the same underlying problem, the demand hasn’t cooled down the way that was expected with frontloading ahead of the feared late-July tariff deadline pulled orders forward, and even though rates on the Asia-Europe have since then eased the transpacific has decoupled from that trend partly because of the USTR’s tariff review could still push duties back to the earlier IEEFA levels extending the incentive to frontload. On the supply side back-to-back typhoons have compounded port congestion in southern China just as the canal squeeze restricts the East Coast alternative, leaving carriers little room to absorb disruption without raising prices or skipping calls.

What It Means for the Market

The market is experiencing a convergence of higher freight costs and greater uncertainty. The section 301 tariff regime is now facing legal challenges from 25 states, while the Panama Canal is progressively reducing Neopanamax draft limits because of concerns surrounding water availability and EL Nino. These developments are occurring alongside strong seasonal demand and active carrier capacity management.

For shippers, the principal risk is therefore not simply higher base freight rates but greater volatility in total landed costs. Changes in tariff policy, court decisions, canal draft restrictions, weather conditions and carriers’ capacity deployment could all alter routing economics and freight quotations over the coming weeks.

Short-Term Outlook

The transpacific market is expected to remain sensitive through late August and September. Key developments to monitor include the progress of states’ tariff lawsuit, the Panama Canal’s scheduled draft reduction to 48 feet on 26 August and 47.5 feet on September 3, and further carrier decisions on September GRIs and network capacity. If demand remains firm while capacity tightens, transpacific rates could stay elevated; conversely, weaker import demand or increased capacity deployment could place downward pressure on spot rates.