Inflation in the euro zone rose to 3.3% in August, up from 2.9% in July and 2.8% in June, driven primarily by higher energy prices linked to the ongoing war involving Iran. Energy inflation surged to 14.3%, significantly higher than previous months, reflecting supply disruptions and price spikes in crude oil and natural gas. Despite this, core inflation, which excludes volatile items like energy and food, slightly decreased to 2.4%.

Markets are now almost certain that the European Central Bank (ECB) will raise interest rates by 25 basis points at its September 10 meeting. This would follow the ECB's previous hike in June, when the key interest rate was increased to 2.25% in response to inflationary pressures stemming from geopolitical tension and supply chain issues. Traders currently price in a 98.9% chance of a further rate rise, aiming to curb inflation before it becomes entrenched.

However, the ECB faces a tough balancing act as it weighs the risks of higher borrowing costs on the economy. Many households across the euro zone carry significant debt, and small- and medium-sized businesses (SMEs) are already under economic strain. Additional rate hikes could exacerbate these difficulties, potentially leading to postponed or abandoned investment plans and a downturn in housing markets.

Economists caution that the ECB must carefully consider the economic fallout amid persistent energy-driven inflation. If price pressures persist longer, they could embed into wage and service costs, leading to more persistent inflation. The decision to raise rates again will thus need to balance the goal of price stability with protecting fragile economic growth and financial conditions for both consumers and businesses.