Korea’s consumer prices rose 3.2% in June from a year earlier — the highest inflation rate in two and a half years. The decisive driver was a 24.7% surge in petroleum prices, as Middle East geopolitical risk pushed up global oil and a weak won compounded the effect. The reading stayed in the 3% range for a second straight month after May’s 3.1%. Below, we break down what drove June’s numbers and where prices head next. ⛽

TL;DR

  • June CPI rose +3.2% year over year — the highest since December 2023 (2.5 years) and a second consecutive month in the 3% range.
  • Petroleum (+24.7%, contributing +0.93 percentage points to the headline) was the main culprit, while a 22.2% jump in computers (“chipflation”) and food prices added to the burden.
  • The government says its petroleum price cap shaved 0.4 percentage points off the rate. July should ease somewhat, but keeping H2 inflation “under 3%” remains the challenge.

📊 How much did prices rise in June? The June consumer price index came in at 119.99 (2020=100), up 3.2% from a year earlier. The figure comes from the June CPI report released on the 2nd by the National Data Agency. It is the highest rate since December 2023 (3.2%) — a 2.5-year peak. Tracing this year’s path, inflation held steady at 2.0% in both January and February, then climbed to 2.2% in March, 2.6% in April, 3.1% in May and 3.2% in June — four straight months of gains. In effect, prices moved from the low-2% range early in the year to the low-3% range within six months.

⛽ What pushed prices higher? The biggest factor behind June’s inflation was petroleum. Petroleum prices jumped 24.7% from a year earlier, lifting the headline index by 0.93 percentage points. That is the steepest rise in three years and 11 months — since July 2022 (35.2%), during the fallout from the Russia-Ukraine war. By item, gasoline rose 23.1%, diesel 33.7% and kerosene 23.1%. Middle East geopolitical risk drove up global oil, while a persistently weak won raised the cost of imported energy. Although a memorandum of understanding between the U.S. and Iran to end hostilities eased some uncertainty, domestic petroleum prices remained more than 20% above year-ago levels.

💻 ‘Chipflation’ and food prices add to the strain Industrial goods, food and services all rose broadly. Industrial goods prices climbed 4.4%, and one standout was computers, up 22.2% as rising chip prices fed through to finished products — so-called “chipflation.” On the food side, agricultural, livestock and fishery products rose 3.2%, a wider gain than May’s 2.2%. Green onions (37.1%), rice (11.7%), croaker (12.0%), eggs (10.3%) and domestic beef (7.5%) stood out. Service prices rose 2.6%, led by personal services at 3.4%. Travel and service items saw large gains, including international airfares (28.2%), overseas group tours (24.3%) and insurance service fees (13.4%).

🧮 Core inflation and the government’s response Core inflation, which strips out volatile items, held in the mid-2% range — a sign the underlying trend is still within manageable bounds. The OECD-style core measure excluding food and energy rose 2.5%, while Korea’s core measure excluding agricultural products and petroleum rose 2.4%. By contrast, the cost-of-living index — built from items households buy frequently — rose 3.4%, so the felt burden was heavier. The government said its petroleum price cap trimmed 0.4 percentage points off the June rate, explaining that without it the figure would have reached 3.6%. First-half inflation came in at 2.5%.

🔮 Where do prices go after July? The government and the Bank of Korea expect July inflation to ease somewhat from June. Global oil has turned lower, and with the petroleum price-cap benchmark adjusted as of June 27, upward pressure from fuel should soften in July. The government has set a target of keeping H2 inflation under 3%. Risks remain, however. The won stays weak, and there is speculation that if Apple raises product prices in the second half, mobile-phone inflation could flare again. Prices stuck in the 3% range also weigh on monetary policy as the central bank runs a 2.5% base rate (held for an eighth straight meeting). Between inflation, growth and the exchange rate, the Bank of Korea’s calculus grows more complex.

Overall June’s inflation was driven by the “external shocks” of oil and the exchange rate. Core inflation holding in the mid-2% range signals that demand-side pressure is not explosive, but with petroleum, food and services rising together, the felt inflation rate climbed to the mid-3% range (cost-of-living index at 3.4%). Three points are worth watching. First, whether July’s oil prices and the price-cap adjustment actually pull inflation down. Next, as long as the won stays weak, imported-price pressure will not fade easily. Finally, if inflation gets stuck in the 3% range, expectations for a second-half rate cut could be pushed back. For now, oil, the exchange rate and weather conditions all bear watching together.

※ This article is for informational purposes only and is not investment advice.

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