Waitaki district councillor Jeremy Holding, speaking on behalf of the surf community, said "anyone who feels like they've got any connection to the water'' was welcome to join the traditional acknowledgement of a death in the water on Sunday.
One of the men was found dead by a rescue helicopter that night and one was found dead by a surfer who helped get the victim on to a boat so he could be taken back to shore.
Police thanked the community for their efforts in the search for the men when they confirmed the men were dead about 8.30pm that night.
The surf community wanted to acknowledge all those involved in the incident, and especially honour the family, the friends and the lives of those that were lost, Cr Holding said.
"It's a reminder of how much the ocean gives, but it can take away. We're in the sort of district where we use the water all the time - with the river, fishing, with thesea, diving and surfing."
He said Carl Skivington, of Kakanui, started talking with the "local surfers'', and the idea spread from there.
Sam Pathe, of Waimate, had offered surfboards to those who wanted to join.
With a rahui in place in the area Mr Pathe had contacted Te Runanga o Moeraki, and had received their approval for the memorial.
A Waitaki Boys' High School teacher, Nigel Ryburn, had organised pupils from the school to perform a haka, "tika tonu'', at 10am on the morning.
The surfer who found one of the dead brothers, who has declined to comment on the incident, would take part on Sunday, Cr Holding said.
"It could be a time of prayer, it could be a reflection on memory, it could be a celebration of the ocean -- it could be different things for different people on the day,'' he said.
