Cornwall Council has been working with the RNLI to get cover in place as people flock to beaches in the warm weather.
At the weekend two people died and another left in a serious condition after getting into difficulty in the water.
There had been warnings last week that without lifeguard cover people were being put at risk and the RNLI asked people to stay out of the water.
The RNLI provides lifeguards on beaches in Cornwall under a contract with Cornwall Council.
But it said that it had been unable to provide the service as they had not been given sufficient notice to prepare staff to work on the beaches and be provided with the training and protection they would need.
Now Cornwall Council has announced that seven beaches in Cornwall will have lifeguard cover from this weekend.
The announcement was made in a briefing to councillors from council deputy leader Adam Paynter.
He said: “With the RNLI we hope to announce a return to lifeguard cover on some beaches by the end of this month, and more beaches thereafter.
“We part-fund the lifeguard service, but it is provided and managed by the RNLI national charity using volunteers and paid staff. We understand the pressures faced by the RNLI and are assisting them in any way we can to speed a return to lifeguard cover across a number of Cornwall’s beaches.
“The proposal at the moment, with plans still being finalised, and working to criteria including risk profile, expected visitor numbers and history of previous incidents, is for the following beaches to have lifeguard cover from the coming weekend: Widemouth, Gwithian, Fistral, Mawgan Porth, Polzeath, Constantine, Perranporth.
“In the meantime, sea conditions remain adverse. Think twice before entering the sea or going out boating.”