Multiple intense heatwaves have defined summer 2026 across France, with June setting the all-time hottest month on record and national average temperatures shattering prior marks on consecutive days in late June. July followed as the warmest month since records began in 1900, with an average of 24.9°C exceeding benchmarks from 2003 and 2006 amid ongoing drought and red alerts. These verified developments from Météo-France and Copernicus data have driven strong trader consensus toward a Yes outcome at 84% implied probability, reflecting the summer's trajectory against historical precedents. An additional late-July heatwave and persistent high sea surface temperatures further bolster momentum, though August conditions remain the final swing factor before seasonal resolution.