The Drewry World Container Index rose 1.88 per cent to $2,276 per FEU on May 22, driven by a US-China tariff agreement.
Rates from China to the US increased, while other routes remained stable.
The index is still 78 per cent below its 2021 peak but 60 per cent above 2019 levels.
Drewry expects spot rates to rise further as carriers adjust capacity to meet growing Chinese export demand.