A critical shortage of diesel fuel that has gripped Victoria for the past week is showing clear signs of subsiding.

Shell spokesperson Paul Zennaro said the company are expecting supply issues to improve over the weekend and into next week.

Victorian Farmers Federation President Peter Tuohey said farmers and associated businesses struggled with a "huge" amount of stress and concern throughout the shortage.

"It was very, very tight," Mr Tuohey said.

"There's now fuel getting out, and it looks like the worst of it's over."

Victorian Transport Association Chief Executive Officer Neil Chambers said it was fortunate the shortage is recovering in time for the busy pre-Christmas period.

"Thankfully the shortage was relatively short-lived, and had a relatively minimal impact," Mr Chambers said.