Prime Minister Scott Morrison will return early from his Hawaiian family holiday on Saturday, having apologised for taking time off during the worsening bushfire crisis across NSW.

In an acknowledgement of growing public criticism over his decision to leave the country as 100 fires burnt across the state, Mr Morrison announced on Friday morning he would come home following the deaths of two volunteer firefighters on Thursday night.

Prime Minister Scott Morrison: "It has understandably caused a lot of anxiety and I deeply regret that." Credit:Alex Ellinghausen

Mr Morrison, who said he would visit NSW Rural Fire Service control centre on his return, is also expected to visit communities that have suffered the loss of hundreds of properties. He had planned to be away until Monday but was scrambling on Friday to find a commercial flight to return two days earlier than expected.

"I don't hold a hose ... and I don't sit in a control room. The brave people who do that are doing that job," Mr Morrison told Sydney's 2GB radio. "But I know that Australians would want me back at this time out of these fatalities."