It sounds like one of those things your nan might’ve said during a storm: “Don’t stand near the window, or you’ll get struck by lightning.” But is there any truth to it? While getting hit directly through glass is rare, lightning is unpredictable, and windows can still be risky during a storm. If you’ve ever found yourself peeking out during a thunderclap and wondered if you’re being daft or just curious, here’s what you should actually know.
Direct strikes through a closed window are extremely rare.
Let’s start with the short answer: no, lightning doesn’t typically strike through a glass window like a laser beam in a film. Glass isn’t a great conductor of electricity, so it doesn’t attract lightning the way metal does. You’re unlikely to be directly hit just by standing near a window.
However, “unlikely” doesn’t mean “impossible.” There are rare instances where lightning has arced or jumped inside through windows, especially if the storm is severe and the electrical charge finds a path in. But these are outliers, not the norm.
Lightning can enter your home through other paths.
The more realistic risk isn’t the lightning going through the glass itself, it’s it hitting something outside, like a gutter, power line, or tree, and travelling through wiring, pipes, or metal fittings inside your home. This means if you’re standing near a window, especially one with metal frames or connected electronics, you could be indirectly in the path. That’s where the real risk lies—not from the glass, but from what’s around it.
Open windows are a bigger concern.
If the window is open, things change. Lightning doesn’t need an invitation. It can travel through air gaps if there’s a conductive path. A strong strike nearby could arc inside through the open frame or via rain-soaked materials. This is why it’s best to close windows during storms. It helps prevent water from entering, but also cuts off easy entry points for electrical charge. Closed windows are far safer than open ones.
Metal window frames can conduct electricity.
If your window has a metal frame or touches metal elements like curtain rods, radiators, or internal wiring, lightning could technically arc across those if it enters the house. Again, this is more about indirect conduction than a bolt flying through the glass. It’s why the advice to step back from windows during storms is still good. Even if the glass itself won’t zap you, the surrounding materials might if the strike finds its way in.
Glass can shatter from nearby strikes.
Even if lightning doesn’t come through the window, the shockwave from a close strike can be powerful. It can cause windows to rattle violently or even shatter, especially if the house takes a direct or close hit. This could lead to injuries from flying glass. So, standing directly in front of a window during a fierce thunderstorm still isn’t the safest idea, even without a bolt coming through it.
Electronics near windows are vulnerable.
If you’ve got a TV, computer, or plugged-in device near a window, those are actually more at risk than you are. Power surges from lightning can travel through wiring and fry anything in its path, even from a strike down the street. During strong storms, it’s smart to unplug sensitive electronics, especially those near windows or external walls. Surge protectors help, but they’re not foolproof against a powerful direct hit.
It’s safer to avoid plumbing and wiring.
It might sound unrelated, but lightning often enters homes through underground plumbing or cables. That means you shouldn’t be using sinks, showers, or touching anything wired during a storm, even if the window looks peaceful. If you’re standing at a window washing dishes or chatting on a plugged-in phone, the risk increases. Lightning always looks for the fastest route to ground, and water and wires are prime targets.
Watching the storm from a few feet back is fine.
If you love watching lightning, you don’t need to hide under the duvet. Sitting or standing a few feet back from the window, especially if it’s closed and there’s no electronics or metal nearby, is generally safe. The key is not pressing up against the glass or touching the frame. Keep a respectful distance, and you can still enjoy the show without taking any unnecessary risks.
Car windows behave a little differently.
Inside a car, the metal shell creates a “Faraday cage” effect, which protects you by directing the electrical charge around you and into the ground. The windows, though, don’t play a huge role in this protection. Even in cars, it’s best not to lean against the door or window frame during a lightning storm. Stay seated, avoid touching metal, and you’ll be protected by the structure of the vehicle itself.
Tall buildings have lightning protection systems.
If you’re in a high-rise or a building known for its height, chances are it has a lightning rod system in place. These are designed to safely channel lightning strikes into the ground without damaging the building or its occupants. That doesn’t mean windows are entirely risk-free, but it reduces the odds of lightning randomly arcing through a window space. The same goes for many newer homes, especially in storm-prone areas.
People have been struck indoors, but it’s rare.
There are documented cases of people being injured or killed by lightning indoors, but they’re extremely uncommon. When they happen, it’s usually through phone cords, plumbing, or touching conductive surfaces, not standing at a closed window. Still, those rare events are why the advice exists. The window itself might not be the problem, but it can put you in range of the strike’s effects, depending on your surroundings.
Bottom line: respect the storm, don’t panic.
So, can lightning come through a window? Not in the way most people imagine. The glass isn’t your enemy, but what’s around it might be. Respect the power of a thunderstorm, close your windows, avoid metal and plugged-in items, and give yourself a bit of space. It’s fine to admire the storm from a safe distance. Just don’t make the window your front-row seat. A little caution goes a long way, and you’ll enjoy the drama without risking your safety.