South Korean inflation increased slightly less than economists had expected in August. However, price growth remained close to a two-year high as rising energy and telecommunications costs continued to put pressure on consumers.
According to data released by South Korea’s Ministry of Statistics on Wednesday, the consumer price index (CPI) rose 3.1% year over year in August.
That was slightly below market expectations of 3.2%, but notably higher than the 2.8% inflation rate recorded in July.
Monthly CPI Growth Misses Forecasts
On a monthly basis, South Korea’s CPI increased by 0.2% in August. Economists had forecast a slightly stronger rise of 0.3%.
Despite the softer-than-expected headline figure, underlying inflation pressures appeared to strengthen.
Core CPI, which excludes the more volatile food and energy categories, climbed 3.4% year over year in August. That marked a significant acceleration from the 2.6% increase recorded in July.
Energy Costs Push Inflation Higher
South Korea’s headline inflation rate moved closer to the two-year high of 3.2% reached in June.
Higher oil and energy prices were among the main factors supporting the increase. Energy markets faced renewed pressure after a ceasefire between the United States and Iran collapsed in August, contributing to stronger oil prices.
Higher energy costs can affect a wide range of consumer expenses, including transportation, manufacturing and household utility bills.
Telecom Prices Add to Inflation Pressure
Telecommunications costs also contributed to the rise in consumer prices during August.
The year-over-year comparison was partly influenced by temporary mobile-service discounts offered by major telecom providers in August 2025. Those discounts lowered prices during the previous year, making current prices appear stronger by comparison.
As a result, telecom services became another notable contributor to August’s inflation reading.
Sticky Inflation Could Influence Bank of Korea Policy
The latest CPI report suggests that inflation in South Korea remains persistent despite the headline figure coming in slightly below expectations.
Continued inflationary pressure could strengthen the case for the Bank of Korea to maintain a tighter monetary policy stance or consider additional interest rate increases.
The Bank of Korea raised its benchmark interest rate by 25 basis points to 3% in August. It was the central bank’s second rate increase of the year.
Future policy decisions are likely to depend heavily on whether inflation continues to remain elevated and whether underlying price pressures begin to ease in the coming months.
