Poland's statistics office will release the official third quarter data on Nov.30 and analysts polled by Reuters expect the figure to come in at 4 percent year-on-year.

"We will shortly learn the third quarter figure, but all the partial analysis, data from various sectors, indicate this should be between 3.7 and 4 percent," Boni told TOK FM radio.

The largest ex-communist European Union member's economy grew by 4.3 percent in April-June and 3.8 percent in the whole of 2010. Poland was the only state in the bloc to continue growing during the 2008-09 global economic crisis.

But analysts now forecast an economic slowdown ahead, reflecting the worsening situation in Poland's main trade partner, Germany, and other euro zone members, which has already forced Warsaw to cut its 2012 growth outlook to between a contraction of 1 percent and growth of up to 3.2 percent.