I have an outdoor ev charger (no garage) and I've plugged it in during downpours with no issues. EV charging plugs (J1772) have recessed contacts that you can't touch without tremendous effort and electronics that ensure that they don't turn on the charging current until they are securely affixed to and communicating with the car.

There is a pilot current to establish the communication that coordinates this but it's nothing that would electrocute someone (probably similar to an Ethernet cable).