Poland's 28,380 new coronavirus infections in the last 24 hours is a 17% increase from cases reported a week ago, and the first time the number has exceeded 25,000 since April.
There were 460 daily coronavirus-related deaths reported.
Over the last five weeks, Poland has seen a gradual rise in cases and hospitalisations.
The highest rise in death rates has taken place in the eastern regions with the lowest vaccination rates. The country's vaccination rate - 64% of all adults - is below the EU average of 74%.
The government has been reluctant to introduce more restrictions, citing street protests in the Netherlands and Austria.
Health Minister Adam Niedzielski said earlier this week that if the infection rate did not begin to fall by mid-December, then restrictions could be reintroduced.
There are now 18,707 people in hospital with Covid, up 38% in a week, and an increase of 387 in the previous 24 hours. Most of the new admissions are people who are not vaccinated, health ministry officials say.
Temporary hospitals have been reactivated to accommodate the rising number of hospitalisations.
Poland has reported more than 3.4 million Covid infections since the start of the pandemic and 81,688 coronavirus-related deaths.
More about:
