The Department of Conservation's acting operations manager in Golden Bay, Andrew Lamason, said the whales had re-stranded "very high on the beach".
"The whales are near Pakawau Inlet and they are on rocks now, some are up amongst the driftwood."
"The tides are reducing in height which makes re-floating even more challenging."
"The winds are still blowing directly onshore but not as strong as yesterday."
Lamason said there had also been further deaths overnight.
The Department of Conservation said it was doing a health and welfare assessment on the whales with support from Massey University experts.
"We will then make decisions about what the next best course of action is," Lamason said.
Project Jonah had called for help in a post on Facebook to keep the whales "cool and calm" until high tide.
"We welcome anyone to the beach - please park at the Pakawau Community Hall. Conditions are tricky with a very rocky beach and high winds so please wear appropriate clothing and good footwear is essential."
Its medics had been mobilised and were working alongside the Department of Conservation and tangata whenua ke Mohua, it added.
A refloat attempt would happen from noon on Monday.