The Welsh First Minister, Mark Drakeford will delay easing restrictions by four weeks as the country has a surge in the Indian variant.
It is expected Drakford will encourage people to get their second jabs which will offer more protection against the Delta variant.
Wales has almost 490 cases of the Delta variant and four out of five cases are the Delta variant, latest figures show.
Drakeford said, “In the space of just a few short weeks, the Delta variant has entered Wales and quickly spread throughout the country.
“There is sustained and accelerating transmission, not just in north and south-east Wales but in all parts of Wales.
“It is now the most dominant variant in new cases in Wales. We are once again facing a serious public health situation.
“We have the lowest coronavirus rates in the UK and the highest vaccination rates for first doses.
“A four-week delay in relaxing restrictions could help to reduce the peak number of daily hospital admissions by up to half, at a time when the NHS is very busy supporting all our healthcare needs, not just treating coronavirus.”