SEJONG, SOUTH KOREA / RankWire.AI / – South Korea’s consumer inflation climbed to 3.1% in August from a year earlier, according to official statistics. The increase marks a rise from 2.8% in July, pushing the inflation rate back above 3%. Consumer prices also experienced a 0.2% uptick compared to the previous month. The Ministry of Data and Statistics reported that the consumer price index reached 120.05, using a 2020 baseline of 100. A significant portion of the annual rise was driven by higher costs for fuel and mobile telecommunications services.
Petroleum product prices increased by 14.2% compared to August 2025, adding to household transportation expenses. Diesel prices went up by 19.6%, while gasoline costs rose by 11.5%. These petroleum products contributed 0.54 percentage points to the overall inflation rate for the year. Transportation costs overall increased by 7.2% from the previous year. The government indicated that nationwide fuel price caps helped reduce August’s inflation by approximately 0.3 percentage points, partly offsetting the impact of rising energy prices.
Communication expenses also saw a notable jump due to a low base effect from last year. Mobile phone service charges soared by 26.7% from August 2025. SK Telecom offered substantial one-month discounts following a data breach during the same period last year. Without this mobile service effect, the government estimates the annual inflation would have been about 2.5%. Overall, communication costs increased by 16.6%, making it one of the categories with the largest annual growth in the consumer basket.
Rising Fuel and Telecom Costs Significantly Impact Prices
Price pressures outside of food and energy intensified alongside the headline inflation. The core inflation rate, excluding food and energy, rose by 3.4% compared to the previous year, marking the strongest increase since May 2023. An alternative measure, which also excludes agricultural products and petroleum, saw an increase of 3.1%. The index for essential household items, which tracks common living necessities, grew by 3.2%. Within this category, food prices increased by 0.8%, while nonfood prices went up by 4.8% year over year.
Broad increases were also recorded in industrial goods and services during August. Industrial product prices went up by 3.7%, matching the rise in service prices. Costs for electricity, gas, and water increased by 0.4% year over year. Insurance premiums surged by 13.4%, and overseas package tour prices rose by 14.9%. Prices for restaurants and accommodations climbed by 2.8%, while costs related to recreation and culture increased by 4.9%, contributing to the overall rise in service-related expenses.
Food Prices Drop Despite Overall Inflation Continuing
During the month, prices for agricultural, livestock, and fishery products showed some relief, decreasing by 2.6% compared to a year earlier. Fresh food prices declined by 6.7%, primarily due to drops in vegetables and fruit. Fresh vegetable prices fell by 9.8%, and fresh fruit prices decreased by 10%. Conversely, prices for fresh fish and seafood increased by 4.1%. Imported beef prices rose by 6.2%, while domestic beef prices gained 3.3% over the same period.
August’s data revealed a mixed inflation picture across key household expenditure categories. Housing, water, electricity, and fuel costs increased by 1.9% from the previous year. While fresh produce became cheaper, restraining food inflation somewhat, other sectors like energy, communication, and various services experienced larger increases. The headline inflation rate of 3.1% reflects these contrasting movements within the consumer basket. Additionally, temporary effects from mobile pricing changes and higher petroleum prices played a significant role in South Korea’s annual inflation figures.