Agios Sostis preserves soft sand and a simple church above the bay, but has almost no facilities, little parking and direct exposure to north wind.
Our take
An unserviced north-coast cove that rewards an early start
Agios Sostis remains one of Mykonos's least commercial major beaches. There are no rows of loungers on the sand, and the small white chapel marks the headland above a clean, uncluttered bay. A celebrated taverna sits back from the beach but does not replace beach infrastructure.
Bring water and shade, arrive early, and check the meltemi before crossing the island. The narrow road and improvised parking become chaotic in high season; if no legal space remains, turn back rather than obstructing access.
Good to know
Unorganised beach, North coast, Limited parking, and Sandy cove
