WHEN WAS THE EUROPEAN HEAT WAVE IN 2025

The main European heat wave in 2025 began in the last week of June , with the first major spell starting around June 20–22 in Western Europe and intensifying around June 28 into early July. It then continued into early July , and Europe saw additional major heatwave periods later in August 2025 as well.

Quick Scoop

• First major heat wave: June 20–22, 2025, in Western Europe.

• Most intense early-summer spell: late June into the first week of July 2025.

• Later heatwave: August 2025 in southwestern Europe.

The exact timing depends on which part of Europe you mean, because different regions were hit at different points in the summer.