The figure was in line with a flash estimate the state-run Statistics Poland (GUS) agency released at the end of last month.
In May, the prices of consumer goods and services in Poland were 3.1 percent higher than in the same month a year earlier, according to Statistics Poland.
In April, Poland's consumer price index stood at 3.2 percent, data showed.
The Polish central bank predicted in its latest Inflation Report, released on July 10, that inflation would average 2.9 percent in 2026, followed by 2.7 percent in 2027 and 2.2 percent in 2028.
According to a set of macroeconomic targets adopted by the government in late April, Polish inflation is projected to average 2.5 percent this year and next, followed by 2.4 percent in 2028 and 2029, and 2.2 percent in 2030.
(gs)
Source: IAR, PAP