Tasmania's Premier has warned the public they face fines of up to $16,800 if they gather in groups larger than 10 people in public or private from 6:00pm on Friday night, as part of the tightening of measures to address the coronavirus pandemic.

Peter Gutwein, speaking at the daily coronavirus update on Friday, said anyone wishing to enjoy the forecast warm and sunny weekend weather by "taking 20 people to the beach for a few beers" could land themselves in hot water.

"Stay home, unless you are going to work or school or to get supplies, stay at home," he said.

Mr Gutwein said with hotels now closed, "there will be a lot of people with the thought in the back of their minds [of] a few beers in the park or at somebody's place".

Loading

He said this was why from Friday evening, it would be "an offence" for more than 10 people to congregate in public or private spaces, under the threat of penalties of up to $16,000.

"No camping, no parties, no picnics. Don't have barbecues with your mates or a booze up in the park."

"It's not on. The message is clear. Unless you need to go to work, unless you need to go out to get supplies, stay at home and save lives."

Mr Gutwein said the community "had to make sure that the very difficult things that have been inflicted on Tasmanian jobs and businesses, aren't in vain".

Mr Gutwein said there was "no point in the measures we have taken, to shut down businesses, to stand people down in their tens of thousands, if on the weekend, people decide they will take 20 to the beach".

He said there would be an exception for gatherings in the homes of people with families greater than 10.

Tasmania COVID-19 snapshot Confirmed cases: 226

Confirmed cases: 226 Deaths: 13, 12 in north-west What do I do if I think I have coronavirus? If you think you might have COVID-19 phone your GP or the Tasmanian Public Health Hotline on 1800 671 738. Need an interpreter? Phone the Translating and Interpreting Service on 131 450 and tell them your language. For more information and factsheets: Visit the Tasmanian Government's coronavirus page here.

Earlier on Friday, Mr Gutwein urged parents to keep children home from school, as the total number of coronavirus cases in the state reaches 47.

The Tasmanian school term will end four days early on April 3 to give teachers time to plan to provide home learning delivery for students.

Mr Gutwein said he understood parents were concerned and teachers were anxious.

"Schools will remain open, but where possible from Monday parents should keep their children home from school."

A number of schools in Tasmania had already closed and moved to online learning, with Launceston Church Grammar School on Friday announcing it would shift to remote learning as of Monday.

Five Tasmanian coronavirus cases cleared

Stay up-to-date on the coronavirus outbreak Download the ABC News app and subscribe to our range of news alerts for the latest on how the pandemic is impacting the world

Health Minister Sarah Courtney said five cases of coronavirus were diagnosed on Thursday, including two children.

"The children did not attend school," she said.

"All were passengers on Ovations of the Seas which docked in March.

"All were already in self quarantine and receiving daily updates from public health staff."

Director of public health Mark Veitch said of the 47 cases in Tasmania, five had been cleared of the infection.

"Five cases are being treated in hospital and the remaining 36 at home or in home-like circumstances," Dr Veitch said.

"Two hundred and sixty-eight people from cruise ships are being monitored."

Any person who travels to Flinders Island from mainland Tasmania must undergo 14 days of quarantine. ( Supplied: Sammi Gowthorpe )

Islands enforce strict border controls

Mr Gutwein said any non-essential travellers from mainland Tasmania who fly into King or Flinders Island must go into 14 days isolation.

"If you are Flinders Island resident and you travel into the mainland and then back to Flinders you must go into quarantine," he said.

"The two councils have asked us to strengthen those arrangements to ensure we don't have mainland Tasmanians travel there for a holiday.

"An order will be in place to stop intrastate travel to Flinders Island for those who are not essential travellers."

Overseas travellers will soon be compelled to complete a 14-day quarantine period in one of three "state-controlled facilities", Mr Gutwein said, adding the facilities would be established in the north, south, and north-west.