The figure was a notch above the 2.8 percent flash estimate released by the government-run statistics agency at the end of last month.
In July, the prices of consumer goods and services in Poland were 2.9 percent higher than in the same month a year earlier, according to the Central Statistical Office.
The statistics office earlier this year said it had revised its system of weights used for calculating the consumer price index in 2019.
(gs)
Source: PAP