NPHET is recommending new restrictions be introduced before the end of the year.
The country's top public health officials met today, amid growing concern at the spread of the virus.
Restrictions are due to be eased tomorrow until January 6th, allowing people to travel throughout Ireland and three households to mix.
But NPHET's recommending this period be shortened, and the Government will consider the issue at a meeting on Tuesday.
Speaking on RTÉ, Taoiseach Micheál Martin said he spoke to the Chief Medical Officer, Tony Holohan, about the issue today.
NEW: Taoiseach says more COVID restrictions will be put in place before the end of the year. Cabinet meeting next Tuesday
— Seán Defoe (@SeanDefoe) December 17, 2020
He said the restrictions will likely be around the hospitality sector and household visits.
However, he said people will still be able to have a 'meaningful Christmas' before any new restrictions came into effect.
Meanwhile, 484 new cases of COVID-19 have been confirmed this evening, while three more people have died after contracting the virus.
The 14-day incidence rate per 100,000 population now stands at 94.2 - which is up from 88 yesterday's figures.
200 COVID-19 patients are being treated in hospital, while 31 of those are receiving intensive care.
Dr Holohan is warning that unless people limit their contacts now, the virus will experience exponential growth in January.