Key Points

• According to Météo France, the region’s second heat wave began on June 28, 2025, and ended on July 5, 2025. It affected all departments in the region.

• A regional analysis of emergency care utilization indicates an increase in the iCanicule composite health indicator (including hyperthermia, dehydration, and hyponatremia) throughout the entire heat wave.

This trend falls within the expected fluctuations for the current weather conditions.