Millions in Melbourne have exited one of the world's longest Covid-19 lockdowns.

It comes even as cases hover near record levels, with pubs, restaurants and cafes rushing to restock supplies before opening their doors.

Since early August, residents in Australia's second-largest city have been in lockdown - their sixth during the pandemic - to quell an outbreak fuelled by the highly infectious Delta strain.

Officials had promised to lift lockdowns once double-dose vaccinations for people aged above 16 exceeded 70% in Victoria state, of which Melbourne is the capital.

Prime Minister Scott Morrison has confirmed the state had reached that target, with more restrictions set to ease as inoculations hit 80% and 90%.

"The longest road has been journeyed in Victoria and that long road really starts to open up tonight," Mr Morrison told Seven News.

From 11.59pm local time, pubs and cafes could have 20 fully vaccinated patrons indoors and 50 outdoors, while hairdressers can allow entry for five customers.

Masks will still be mandatory both indoors and outdoors.

By then, the city of five million would have spent a cumulative 262 days, or nearly nine months, under stay-home orders since March 2020.

It exceeds a 234-day lockdown in Buenos Aires, according to Australian media.

Pubs began to take more beer ahead of the reopening, with Carlton & United Breweries, owned by Japan's Asahi Group Holdings, saying it had moved an extra 50,000 kegs to venues across the city today.

As businesses prepare to welcome customers, daily infections rose to 2,232 in Victoria, the second highest daily count in any Australian jurisdiction during the pandemic.

Vaccination surge

After largely stamping out infections in 2020, Australia has ditched its Covid-zero approach and is aiming to live with the virus amid higher vaccinations after being rocked by a third wave of infections in the country's southeast since mid-June.

Despite the Delta wave, Australia has recorded only about 152,000 cases and 1,590 deaths, far lower than many comparable countries.

Cases in New South Wales, home to Sydney, rose for the third straight day to 372 from 283 a day earlier.

Virus-free Queensland state is on alert after reporting its first new local case in two weeks - an unvaccinated ride shared river who spent 10 days in the community while potentially infectious.

Authorities said they would check with Uber if the driver had worked while he was infectious.

A spokesperson for Uber said "the driver-partner has not driven with the Uber platform since Sept 19".

Sydney and Canberra, the national capital, exited lockdowns last week after speeding through their vaccination targets. Other states are Covid-free or have very few cases.

With restrictions beginning to ease, Qantas Airways said it would ramp up daily flights between Sydney and Melbourne, one of the world's busiest domestic routes before the pandemic, to about 15 from the first week of November from just one now.