Rotterdam: Through Europe’s largest port pass the goods that define the continent’s trade balance, and the newest figures show that balance slipping into the red. Eurostat, the Union’s statistics office, estimated that the euro area ran a 7.8 billion euro deficit in goods trade with the rest of the world in May, a sharp reversal from the 15 billion euro surplus it posted a year earlier.

The swing matters for a bloc long used to selling more than it buys. Germany, the Netherlands and their neighbours built their wealth on exports, and a dependable surplus has propped up the euro for years. One month of deficit does not rewrite that story, yet it exposes pressures that have gathered beneath the surface.

Energy explains much of the shift. Europe imports most of the oil and gas it burns, and when those bills climb, the value of what the bloc buys abroad rises faster than what it sells. A firm euro compounds the effect by making European goods dearer for foreign buyers, while softer demand in key markets has thinned the order books of the region’s factories.

Competition adds to the strain. Chinese manufacturers now challenge European firms in cars, machinery and green technology, the very sectors that once guaranteed the surplus. Trade tensions with the United States have unsettled exporters further, leaving companies uncertain about the tariffs and rules they will face in their largest overseas market.

The wider picture is not uniformly grim. The Union’s current account, which counts services and investment income as well as goods, still showed a hefty surplus of 113.4 billion euros in the first quarter. Europe’s banks, insurers and consultancies sell heavily abroad, and their earnings help offset a weaker performance in physical trade.

Households, meanwhile, keep saving. The euro-area saving rate held steady at 14.3 percent early in the year, a sign that families remain cautious even as incomes rise. Caution supports bank balances but restrains the spending that might otherwise pull growth higher, and economists watch the figure for clues about confidence.

The trade numbers carry real stakes. Exports sustain millions of jobs, from the docks of Rotterdam to the workshops of southern Germany, and a lasting deficit would signal that European industry is losing ground. For now officials treat May’s figure as a snapshot rather than a trend, but they will scan the coming months closely to see whether the surplus returns or the red ink spreads.