Yes, lightning can damage a pool light.
Lightning
Assuming that you mean a thunder and lightning storm, it is dangerous to swim because water is a conductor to electricity similarly to metal. If the storm is close, meaning you can see the lightning, you should get out of the pool immediately because it is possible that lightning will strike the pool.
Could very well result in death of the swimmer
It is possible. The places where that could occur would be in an outdoor pool that has exposed metal or in an indoor pool with a glass door, window or ceiling.
The Lightning Pool game is a computer game. It is a multi-level Billard style game. It can be played solo or with others. Lightning Pool challenges one by creating obstacles and levels that need to be overcame to succeed.
Can Be Struck By LightningHopefully, nothing. Swimming in lightning with all the water that's around you is a very, very bad decision. You could be struck by lightning and possibly killed. It's always good to get out of the water before the lightning reaches your area.
Swimming in light showers is normally fine, but not in an outdoor pool during a thunderstorm. Lightning is a very real risk to swimmers, and everyone should leave the pool at the first sound of thunder, or sight of lightning or dangerous clouds.
You probably need to replace the light switch
yes a pool light is typically a sealed unit. this is to prevent water from entering the light and coming in contact with the electrical components of the light. if water were to enter the light it could damage the light fixture and also trip the light breaker or gfci. in addition in some situations if the light were not installed correctly/electrically protected correctly (with breaker and gfci) could cause a dangerous situation to bathers. to change the light bulb in a pool light fixture the light fixture must be brought above the waters surface and the lense with lense gasket removed bulb changed then lense with lense gasket replaced and the light reinstalled in the light niche in the wall of the pool below the waters surface. you must also use the appropriate bulb for the light fixture. this is not as simple as just picking up a bulb from home depot and threading it in as you would do with an outdoor flood light. light repairs should only be performed by a trained pool professional as it could be dangerous if not done correctly.
This depends on what kind of pool you have. If it's a permanent pool, such as one set in concrete, no that will not hurt it. If it is an inflatable pool, than yes, leaving it outside when it is not full could eventually cause damage.
Faulty wiring.
It could damage the internal PVC of the filter and cause sand to get in your pool.