Victoria's Catholic bishops say all masses across the state have been suspended, in a measure that could see Catholic weddings and funerals scaled back or postponed.

Key points: The Government's new ban on indoor gatherings applies to religious groups

The Government's new ban on indoor gatherings applies to religious groups Masses are being suspended until further notice in Victoria, while Perth and Hobart have enacted similar bans

Masses are being suspended until further notice in Victoria, while Perth and Hobart have enacted similar bans Catholics are being told they can stream masses online and use the social distancing time for prayer

In a letter signed by Archbishop of Melbourne Peter A Comensoli and three other bishops, the state's Catholics were told public liturgies would be suspended until further notice.

Meanwhile, the Catholic Archdiocese of Perth, which covers the more densely-populated lower half of the state, has also said it would suspend public masses for the next two weeks.

The Perth ban will last until at least April 1, but the state's churches and chapels will remain open for people to undertake private prayer.

In Hobart, masses are suspended until further notices, with Parish churches still open for visits and personal prayer at times determined by each parish.

Catholic masses are available for streaming online, the bishops said. ( Flickr: David Eucaristía )

It comes after Prime Minister Scott Morrison banned non-essential indoor gatherings of over 100 people to stop the spread of coronavirus.

Schools, universities, airports, public transport, supermarkets and many workplaces are exempt from the ban, but Mr Morrison said religious gatherings must comply with the new measures.

"We are very aware that this restriction will be particularly difficult for families who are planning liturgies such as funerals, weddings and baptisms," the Victorian letter said.

The bishops said these events may be able to go ahead so long as there was sufficient distancing between participants, and attended by a "carefully limited congregation".

They said the option of deferring the events may also be offered to families.

Virtual masses on YouTube

"All Catholics in Victoria are dispensed from their Sunday obligation until further notice," the letter said.

But the bishops said parishioners could participate in masses broadcast online, diverting them to YouTube channels that stream church services.

They also encouraged followers to make the most of their time in self-isolation by reflecting on the Catholic scriptures, praying with their families or "making a spiritual communion".