A British Divers Marine life spokesman said the whales that had died, had died naturally.
He said several whales were refloated by BDMLR volunteers, some turned back into the harbour and the rest were waiting at the harbour entrance.
The operation is ongoing, he added.
More top news
Conditions will remain cloudy, with some showers in the south and sunny spells likely, especially in the east.
Here are Ian Payne's British medal prospects for the 2016 Rio Olympics.
The Democratic presidential nominee pledged to foster an inclusive society, create jobs and make college tuition debt free for all.