This year, the peak season in the shipping industry showed up early, fast, and in a way that feels different from the usual slow build. Over the past month, container rates have climbed to levels we haven’t seen since the Red Sea crisis, with the Platts Container Index jumping roughly 80% in just thirty days.
U.S. tariffs are driving this year’s atypical peak season
The most immediate catalyst is the upcoming round of U.S. tariffs. Starting in late July, new duties of 10% to 12.5% will apply to goods from roughly sixty countries. Importers aren’t waiting around to see how those costs play out. They’re pushing cargo out of Asia now, even if the inventory won’t be needed until later in the year.
That rush turned June into a compressed peak season. Carriers responded quickly, rolling out steep GRIs and surcharges. HMM’s $3,000 peak season surcharge for mid‑July, along with additional early‑July GRIs, triggered a wave of last‑minute bookings as shippers tried to beat the deadline. What normally stretches across several months has been squeezed into a few hectic weeks.

Consumer shopping habits are driving earlier demand this year, too
National Retail Foundation (NRF) data shows that 32% of consumers began back‑to‑school shopping in June, compared with 26% last year. That early movement suggests retailers are pacing demand differently this season. In other words, importers aren’t just shipping early, shoppers are buying early, too. It’s another sign that demand is being pulled forward rather than growing organically.
Other factors adding to uncertainty for shipping this summer
Meanwhile, mine risks and vessel attacks in the Strait of Hormuz continue to add uncertainty. Higher insurance premiums, and unclear ceasefire terms have kept carriers cautious. Even with multinational clearance efforts underway, about eighty naval mines are still believed to be scattered across traditional shipping lanes. Fuel costs have also been volatile, adding another layer of pressure.
None of these issues directly increase demand, but they do reduce effective capacity. When carriers hesitate or reroute, the market tightens, even if consumer appetite hasn’t changed. If the front‑loading trend continues, the peak season may unwind earlier than usual – possibly before July is over.
Once the tariff deadline passes, demand could settle quickly, and rates may ease sooner than many expect. The NRF’s early shopping data supports this idea: when both retailers and consumers shift their calendars forward, the traditional August–September peak loses some of its punch.
What shippers need to know in a changing market
For shippers, the message is straightforward: today’s rate environment is a warning, not a forecast. Volatility is shaping the market more than traditional supply‑and‑demand fundamentals.
Suggestions for procurement teams in the near future are listed below:
- Secure July capacity but avoid long commitments at elevated prices.
- Keep routing options flexible in case geopolitical conditions shift again.
- Watch for rate normalization after the tariff deadline.
- Treat carrier surcharges as temporary responses to uncertainty rather than permanent changes.
The shippers who stay ahead this season will be the ones planning around volatility instead of reacting to it. MoreThanShipping.com will continue to follow these developments closely and keep our readers informed as conditions evolve.




