FX.co ★ South Korea’s Inflation Eases to 2.9% in September, Slipping Below 3% Threshold

South Korea’s consumer price inflation slowed in September 2026, with the Consumer Price Index (CPI) rising 2.9% year-over-year, down from 3.1% in August 2026. The latest data, updated on 1 October 2026, marks a move back below the 3% level on an annual comparison basis.

Both the current and previous readings are measured year-over-year, comparing each month’s price levels with the same month a year earlier. The easing from August to September suggests a modest cooling in price pressures in Asia’s fourth-largest economy as it continues to monitor inflation dynamics through the second half of 2026.