South Korea's central bank on Friday held its policy rate steady for September, extending its wait-and-see mode for three straight months after sending the key rate to a record low level to strengthen growth for Asia's fourth-largest economy.

In a widely expected move, the monetary policy board of the Bank of Korea voted to keep the key rate at 1.25 percent, as central bank officials have recently cited concerns about snowballing household debts and a possible rate hike in the United States.

In June, the central bank made a surprise rate cut, citing a need to support the economy.

The country's exports posted the first on-year rise in 20 months in August on the back of brisk demand for chips and flat displays. Outbound shipments came to $40.1 billion last month, up 2.6 percent from the same month last year, according to government data.

Consumer spending, a major pillar of growth for South Korea's economy, grew 3.3 percent in the April-June period from a year earlier.

The country's consumer prices rose 0.4 percent last month from a year earlier, staying below the 1 percent level for four straight months, according to government data.

The monetary policy board noted some improvements in the domestic market, though it cautioned the local economy could face high uncertainties.

"Exports have increased slightly on the effects of transitory factors, and domestic demand activities appear to have continued their improvements," it said in a statement.

"The board forecasts that the domestic economy will sustain its trend of modest growth going forward, owing chiefly to expansionary macroeconomic policies, but in view of economic conditions domestically and abroad judges the uncertainties surrounding the growth path to be high."

In July, the BOK slashed its growth outlook for the year to 2.7 percent in its latest quarterly revision. The outlook marked a 0.1 percentage point cut from 2.8 percent three months earlier.

Friday's decision by the BOK board is in line with an earlier poll conducted by Yonhap Infomax, the financial news arm of Yonhap News Agency, in which all of 13 economists surveyed forecast the central bank to freeze the key rate in September. (Yonhap)