Australian Prime Minister Scott Morrison, who is under pressure to overturn rules barring travel from Covid-19 ravaged India, said it was "highly unlikely" travellers would face maximum penalties of five years in jail and a A$66,000 (€42,000) fine.

Australia last week banned all travellers from India, including its own citizens, from entering the country until 15 May due to the surge in Covid-19 cases there, and warned offenders will be prosecuted and penalised.

The temporary restrictions have been excoriated by politicians, expatriates and the Indian diaspora.

"I don't think it would be fair to suggest these penalties in their most extreme forms are likely to be placed anywhere, but this is a way to ensure we can prevent the virus coming back," Mr Morrison told local broadcaster Channel Nine.

The rules would be used "responsibly and proportionately" but were needed to ease pressure on the country's quarantine systems, with Covid-19 cases from India jumping to 210 in a 28-day period, largely in April, from 14 two months earlier.

Australia's main medical association said the government should immediately reverse its "mean-spirited" order and put in place a plan to ensure the safe return of Australians from India.

Authorities should also move vulnerable people from India once the current pause in flights is lifted, said Australian Medical Association President Omar Khorshid.

The Australian Human Rights Commission and even politicians from Mr Morrison's own party criticised the decision for leaving Australians stranded.

Former Australia cricket player Michael Slater, who was working in India as a commentator for the Indian Premier League, lambasted the Australian government for the travel ban.

"Blood on your hands PM. How dare you treat us like this. How about you sort out quarantine system," Mr Slater said in a tweet. Mr Morrison dismissed the comments as "absurd".

Australia relies on hotel quarantine receiving about 5,800 travellers from overseas each week who isolate for two weeks in hotels at their own expense.

States have been urging the federal government to set up designated quarantine centres, which could allow more repatriation flights.

Repatriation flights from India may resume as planned by 15 May, Mr Morrison said, as the government looks to more than double the capacity in a quarantine facility in the country's Northern Territory by the middle of this month.

India, which reported more than 300,000 new cases for a 13th straight day today, is in the midst of a devastating second wave, with hospitals and crematoriums overflowing and supplies of medical oxygen running short.

Border closures have largely helped Australia keep its Covid-19 numbers relatively low, with just over 29,800 cases and 910 deaths.