The coastline around Grebbestad is ideal for sea kayaking: the granite skerries create a maze of sheltered channels where the water is calm and clear even when it's rough offshore, and there are uninhabited rocks to land on, swim from, and picnic on. The archipelago extends several kilometres out to sea, and a full day's paddling barely scratches the surface of what is accessible.
Several outfitters in Grebbestad and the nearby towns rent kayaks by the hour or day. Guided trips are available for those who want help reading the tides and finding the best routes among the outer islands. The season runs roughly June to September; July and August are warmest, with sea temperatures high enough for comfortable swimming.