Wales' First Minister Mark Drakeford has announced that on December 28 tighter restrictions for household mixing, staying at home, holiday accommodation and travel will apply across Wales.
Mr Drakeford has announced all non-essential retail including close contact services and all leisure and fitness centres, will close at the end of trading on Christmas Eve and all hospitality premises will close from 6pm on Christmas Day.
Mr Drakeford said the whole of Wales would move to "alert level four" and restrictions would be tightened across the country to control the spread of coronavirus.
First Minister Mark Drakeford told the Welsh Government briefing: "Many of you will have seen the warnings from senior clinicians about the huge impact coronavirus is having on the whole of our health service.
"The situation we are facing is extremely serious.
"We must move to alert level four and tighten the restrictions to control the spread of coronavirus and save lives.
"This new set of higher-level restrictions will apply to the whole of Wales.
"This means all non-essential retail, including close contact services and all leisure and fitness centres will close at the end of trading on Christmas Eve.
"All hospitality premises will close from 6pm on Christmas Day."
First Minister Mark Drakeford said the advice from the Welsh Government was that only two households should come together to "form an exclusive Christmas bubble" in Wales.
Keep up to date with coronavirus cases in your area by adding your postcode below
First Minister Mark Drakeford told the Welsh Government briefing: "Yesterday, I met the first ministers of Scotland and Northern Ireland and Michael Gove from the UK Government to discuss the common arrangements for the five-day Christmas period.
"We had a further meeting this morning. In the few short weeks since we made this decision, the situation has changed drastically as coronavirus has gripped the UK country once again.
"Later today, we will publish joint advice across the UK, explaining that a smaller Christmas is a safer Christmas.
"That a shorter Christmas is a safer Christmas."
First Minister Mark Drakeford told the Welsh Government briefing: "Here in Wales, the position is that only two households should come together to form an exclusive Christmas bubble during the five-day period.
"The fewer people we mix with in our homes, the less chance we have of catching or spreading the virus.
"None of us wants to be ill this Christmas. And we don't want to give coronavirus to our close family or friends.
"The Chief Medical Officer for Wales has provided special advice for people who were previously shielding about mixing over Christmas."
