SummerSlam is one of the paid events organized annually by WWE, as well as the third longest running among those proposed and one of the most important, so much so that it is commonly referred to as one of the so-called Big Four, together with Royal Rumble, WrestleMania and Survivor Series.

The event is held every year in August and the first edition took place on August 29, 1988 at Madison Square Garden in New York City (New York).

The inaugural SummerSlam took place on August 29, 1988, at Madison Square Garden in New York City. From 2009 to 2014, SummerSlam was held at the Staples Center in Los Angeles and from 2015 to 2018, the event took place at the Barclays Center in the New York City borough of Brooklyn.

From its inception up through the 2021 event, SummerSlam was held annually in August. The 2022 SummerSlam marked the first and thus far only time that the event was not held in August, as it was instead held in July, with the event returning to August in 2023.