The song appears on the Target exclusive deluxe edition of This is Acting.

Summer rain comes late (the spring is supposed to bring the rain), so everyone is waiting for it’s highly desirable arrival. It is a great compliment to be compared to a summer rain, in which this song Sia is comparing her lover to an appeasing summer rain.

It is believed that this song was rejected by Christina Aguilera. An alleged track list for Aguilera’s eighth studio album was leaked early in 2015, and the fifth track was entitled “Summer Rain”, suggesting that she was planning on recording and releasing a song dedicated to her daughter with the same name. Sia is also listed as one of the producers on the record. Now that a song whose title is identical to Aguilera’s alleged track name has been realized and placed on Sia’s extended album, it is thought to have been planned for Aguilera initially, but declined shortly after.