Katharos Beach

Katharos is the antidote to the Oia crowds, a wild cove tucked under towering volcanic cliffs on the northwest coast a short way below the village. The beach is a strip of fine dark gravel around 230 metres long, framed by dramatic rock that mirrors the island volcanic origins, and the water is clear and open. There is almost nothing built here, and that absence is exactly why people who find it keep coming back.

The lack of development is the headline. There is no organised sunbed operation spread along the sand and no commercial bustle, just a single small lounge taverna sitting above the cove for a drink or a bite. The result is a sense of quiet and cleanliness that the busier organised beaches cannot match, and a rare chance to watch a Santorini sunset from the water line without standing shoulder to shoulder with the Oia crowd.

All of that comes at the price of effort and exposure. Access is a steep narrow path down from a small parking area near the road, which rules the beach out for anyone with mobility limits or very young children, and there is little natural shade once you are down. The gravel deepens fairly quickly into the water, and the cove is open enough to feel the wind and swell when the weather turns, so calm settled days are the ones to choose.

Who it suits: independent travellers and couples staying around Oia who want solitude, dramatic scenery and a quiet sunset swim, and who are happy to carry water, snacks and shade down the path.

Who should skip it: families wanting shallow calm water and full facilities will be far happier at Caldera Beach or Monolithos, and anyone who wants sunbeds, bars and easy access should choose the organised southeast strip instead.