Europe's Mild September Brings Gas Storage Relief, Higher Prices Ahead

Europe is bracing for a mild September, which may trim heating demands just as countries strive to rebuild gas inventories for winter. Forecasters from Vaisala predict average temperatures will run 3C to 7C above normal across various regions, including the Balkans, Iberian Peninsula, Italy, and France.

Daytime highs in southern France are expected to top 35C (95F) through the weekend, according to Météo-France. While an Atlantic system is forecasted to bring a short, cooler interlude next week, models and meteorologists anticipate it will fade quickly, leaving Europe on the warmer side for much of the month.

The milder temperatures provide some breathing room for Europe to replenish natural gas before winter, with storage levels currently at roughly 65% capacity, the weakest level for this point in the season since records began in 2009. However, clashes between the US and Iran are driving benchmark gas prices close to their highest levels since 2023 due to decreased faith in shipments through the Strait of Hormuz.

Rivers Rhine and Danube face persistent navigation worries, with Henneberg expecting few gains on the Rhine despite recent improvements. Meanwhile, wind generation is expected to receive an early boost under low pressure over northern Europe but will fade as high pressure returns by mid-month. Solar output should dip next week due to storm systems before returning to normal later in the month.