The Surf Witch Skin is a rare Fortnite outfit from the Demon Beach set. It was released on June 30, 2020 and is currently available in the store. It can be purchased from the Item Shop for 1,200 V-Bucks when listed. Surf Witch was first added to the game in Fortnite Chapter 2 Season 3.
Surf Witch is a summer skin and is part of the Summer Splash 2020 event. These warm weather based skins sometimes take a previously popular skin and give it a twist. In this case, Surf Witch is based on the Haze outfit.

How to get the Surf Witch skin

Surf Witch Skin is 1200 V-bucks 

Surf Witch can be obtained with 1200 V-Bucks in the Item Shop. Cosmetics come in and out of the store every day, so we have no way of knowing when it will return.

Surf Witch Girl Skin: Summer Haze Best Cool Pictures