The Skagerrak is limited in the west by a line drawn from the lighthouse of Hanstholm to the lighthouse of Lindesnes and in the south by a line drawn from Skagen lighthouse to the lighthouse of Tistlarna and from there to the nearest point on the Swedish coast.
Skagerrak se na zahodu omeji z linijo, ki teče od svetilnika Hanstholm do svetilnika Lindesnes, na jugu pa z linijo, ki teče od svetilnika Skagen do svetilnika Tistlarna in od tam do najbližje točke na švedski obali.