My wall box has the life of a king ? really.
It is installed just inside of our garage and therefore protected from the elements of the bad weather, the tethered cable passes outside, under the rubber weather seal of the garage door and plugs straight into car.
I was lucky enough not to have it installed on the front of my house.
There not the nicest thing in the world to look at really ?.
If it absolutely had to to be fitted outside and was facing the prevailing wind and rain, then yes I would consider having a weather proof box fitted.