These showers are when a number meteors shoot across the sky--appearing to be from the same point. After these such showers, it is possible to discover some more meteorites that survived the Earth's atmosphere!
Eta Aquarids: May
Find a dark, secluded spot away from city lights; this will optimize your chances of viewing the showers.
Dress for the weather: watching for the showers can be a bit of a waiting game.