> along the Mediterranean sea in France, with wind above 100km/h

And what's the humidity?

The Santa Ana winds that affect LA are extremely dry and gusty with < 10% relative humidity. It is hard to compare them to anything else.

I really don't know, we never talk about humidity here, only about rain (it rains few days each year, but a lot).

Apparently it's more than 60% year long: https://weather-and-climate.com/average-monthly-Humidity-per...

I agree climate is a bit special in south California, but what is usually done here when a fire is near a house is for the owner to sprinkle it before the fire is coming; if you take time to sprinkle the roof (which is the only part containing wood here) there is less chance for an ignition.