Living within the UK means we are subject to lots of rain. There's a lot more.

Whether it's safe to charge an electric vehicle in rain.

 

Living within the UK means we are subject to lots of rain. There's a lot more.

Whether it's safe to charge an electric vehicle in rain.

Sure. Why not?
There are lots of street lights standing in the rain.

 

The wires, connections, and connectors are all designed to be safe in the rain.

 

Inside the connecting cable there is a pilot contact, which is designed to that it makes contact last (i.e after all the other pins have made contact). The pilot contact operates a contactor inside the charger. Until that contactor is operated, there is no voltage on the cable until the connector is firmly in the socket in the car.

I see is as rather safer than connecting a caravan mains hook-up in the rain.

I think the biggest danger from electric cars is from the batteries catching fire, and that is probably more likely to happen when the temperatures are warmer.