The figure significantly outperformed analysts' consensus forecast, which had predicted a 1.7 percent increase, Poland's PAP news agency reported.
In month-on-month terms, Polish industrial production in October was 10 percent higher than in September, the Statistics Poland (GUS) agency said.
Meanwhile, the country's seasonally-adjusted industrial production went up by 3.9 percent in year-on-year terms in October, while increasing 4.6 percent month on month, the state-run statistics office reported.
According to the European Union's Eurostat statistics agency, which uses a different methodology, seasonally-adjusted industrial production fell 1.3 percent in Poland in September, compared with the same month last year.
(gs)
Source: PAP