Which named wind blows down the Rhône Valley toward the Mediterranean Sea?

The named wind that blows down the Rhône Valley toward the Mediterranean Sea is the mistral.

The mistral is a strong, cold, usually northwesterly wind in southern France. It is funneled and accelerated through the Rhône Valley, then can spread across the Gulf of Lion and nearby Mediterranean waters. The wind commonly develops when high pressure builds over France while lower pressure lies to the south or southeast.

Mistral events can bring very clear skies and sharply reduced humidity, but they may also create rough seas and hazardous conditions for small boats. Gusts can be particularly powerful where terrain channels the airflow. The wind is an example of how pressure patterns and local geography combine to produce a regional wind.

The mistral is not the same as every strong wind in the western Mediterranean. The bora is associated mainly with the eastern Adriatic, while the sirocco generally comes from the Sahara toward the Mediterranean. Local names often reflect distinctive routes, temperatures, and effects created by mountains and coastlines.