Spot aframax tanker earnings have slid towards the lowest this year with persistent tonnage oversupply during the European refinery maintenance season.

Clarksons Platou Securities estimated global average aframax earnings at $7,000 per day on Thursday, down 30.9% over the past month.

The spot trade in the sector has been plagued by vessel oversupply in recent weeks due to limited shipping and floating storage demand, brokers and analysts said.