Greens support has surged across both sides of the Yarra River in Victoria's weekend council elections, according to early voting patterns.

Moreland Council Mayor Samantha Ratnam's vote has more than doubled since the 2012 elections, with the high-profile candidate getting 5499 votes, a 55.37 per cent share.

Moreland Council Mayor Samantha Ratnam is leading the Greens' success story in the Victorian council elections. Credit:Twitter

And Banyule might have its first Green councillor with Peter Castaldo leading in the Griffin Ward, but it will come down to how the other preferences flow.

In Port Phillip, three new Greens councillors are leading the early vote, while in Yarra, three Greens also look set to be re-elected. The Greens are also claiming the possibility of a fourth win in Yarra, but that result hinges on preferences.