Greece’s Harmonised Index of Consumer Prices (HICP) accelerated sharply in September 2026, with year-over-year inflation rising to 5.1%, up from 3.7% in August 2026. The data, updated on 9 October 2026, underline a renewed build-up of price pressures in the Greek economy after a more moderate phase over the summer.
The figures are based on a year-over-year comparison, measuring how prices in September 2026 changed relative to September 2025. Likewise, the previous reading compared August 2026 with August 2025. The move from 3.7% to 5.1% suggests that the pace of price increases has strengthened notably within just one month on this harmonised EU measure, which is closely watched by policymakers and financial markets.
The uptick in HICP may sharpen the focus on Greece’s inflation dynamics within the euro area, as investors and analysts assess whether this marks the start of a more persistent inflation trend or a temporary flare-up following earlier easing. Further monthly data will be key to determining if September’s jump represents a one-off shock or the beginning of a new inflationary phase.