On-time reliability on the Asia-North America trade fell to 26.9% in September, down 7 percentage points from August, as tighter vessel capacity and harder booking conditions raise new uncertainty for shippers, according to WiseTech Global's October Ocean Freight Risk Outlook.
What Happened
The four-week outlook combines forecast demand, planned carrier supply, booking responses, arrival performance and port operating conditions. Asia-North America on-time performance came in at 26.9% in September, below August's 33.9%, while the latest weekly reading was 26.8%. Delays of eight days or more remained the largest arrival-outcome category.
WiseTech attributed the pressure to continued disruption at Asian ports, with vessel delays reducing effective trans-Pacific capacity. Planned carrier capacity is expected to decline, tightening space toward the end of the outlook period, though the report stressed this reflects reduced supply rather than stronger demand. The booking security risk indicator is expected to rise and remain well above its historical average, signaling greater difficulty securing space on preferred sailings.
Published schedules show relatively short transits of 26.2 to 27.6 days, below the recent 28-day baseline, but the report cautioned that weak actual performance continues to create uncertainty around arrival dates. It also found substantial differences in service performance and booking acceptance risk among the top 10 carriers on the trade.
Background
The decline is not isolated. Asia-Europe on-time performance fell to 9.9% in September from 22.9% in August, with the latest weekly reading at 11.5% and delays of eight days or more accounting for 45.5% of volume. Europe-North America reliability slipped to 39.2% from 42.8%. The report cited Asian port congestion and changes between Suez Canal-Red Sea and diverted Mideast routings around Africa as possible contributors to broader network disruption.
Capacity remains comparatively plentiful on Asia-Europe and Europe-North America, with planned supply above projected demand and booking security risk below historical averages. But the report stressed that available slots do not necessarily translate into on-time arrivals, leaving delivery execution as the principal concern. China's Golden Week holiday adds disruption to production and cargo flows, and a subsequent easing in demand may not immediately improve booking availability or schedule reliability.
Impact on Shippers
For Chinese exporters shipping to the US, the most direct impact is on transit time: with on-time reliability below 30% and delays of eight days or more the most common outcome, even secured bookings may not translate into predictable warehouse arrivals, forcing a reassessment of peak-season replenishment schedules. On cost, capacity tightening driven by supply rather than demand could support rates toward the end of the period, while harder booking conditions raise the hidden cost of last-minute space. On customs, greater arrival uncertainty can complicate coordination of declaration, container pickup and overseas warehouse inbound scheduling.
The report also noted that even stronger-performing carriers have weak recent on-time results, limiting the protection that carrier selection alone can provide.
Recommendations
Shippers should book early against contracted allocations, build additional time into delivery commitments, and align inbound plans with consignees and overseas warehouses. For time-sensitive cargo, evaluate combinations of Ocean plus Parcel and Ocean plus Truck Delivery, and prepare documentation and customs materials in advance to reduce post-arrival waiting. Specific schedules and capacity arrangements are subject to the latest carrier and official announcements.