The country on Saturday dropped a requirement of wearing face masks outdoors and restaurants were allowed to serve food outdoors.
Polish Prime Minister Mateusz Morawiecki announced last month an extensive easing of curbs. He told reporters: "I daresay the worst is behind us in terms of infections."
Morawiecki said at the time that by the end of May, all children should be able to return to school, and events such as weddings with up to 50 people will be allowed.
Polish shopping malls, DIY stores, museums and art galleries were allowed to reopen last week.
The country also brought forward the reopening of cinemas, theatres, concert halls and cultural institutions by one week, to May 21.
Indoor dining, indoor sports facilities and swimming pools will be allowed to reopen with capacity restrictions one day earlier than planned on May 28.
Poland on Friday reported 3,288 new coronavirus infections and 289 more deaths, bringing the country's total number of cases during the pandemic to 2,849,014 and fatalities to 71,311.
Source: PAP, Reuters