The number of new virus cases rose by 380 from the previous day, while the death toll increased by seven, according to public health authorities.
On Thursday, the Polish health ministry reported 16 deaths throughout the day and 370 new coronavirus infections nationwide, compared with a record 30 deaths and 357 new cases a day earlier.
The first infection was confirmed by Polish authorities on March 4, while the country's first coronavirus fatality was announced on March 12.
Poland has declared a "state of epidemic" and temporarily closed its borders to non-residents in a move to curb the spread of the illness.
Public gatherings of more than two people have been banned. Health and government officials have urged Poles to stay home and practice social distancing.
An initial two-week closure of the country’s schools has been extended until April 26.
Poland’s prime minister on Thursday said that a swathe of restrictions on daily life were being extended as the country battles the outbreak.
The government last week announced tough new restrictions on daily life, banning children under 18 from leaving home unless supervised by an adult, closing parks and beaches, and ordering most hotels to shut.
Officials have urged Poles to spend the Easter holidays at home and scrap any travel plans amid the COVID-19 epidemic.