Calm south-coast bays, one extraordinary ruin, and a wind that decides your day.
Platis Gialos beach
Shallow, sheltered and lined with tavernas that will feed a toddler at six. Sea taxis leave from the same sand for other bays.
Delos day boat
Thirty minutes from the Old Port to an entire abandoned ancient city. Morning boats only, April to October, and no shade โ bring hats.
Aegean Maritime Museum
A small garden museum of ship models and lighthouse lenses in Chora, good for a hot hour with children over six.
Ornos and the sea bus
Ornos has the calmest water and the shortest walk from bus to sand; the sea bus turns beach-hopping into the day's entertainment.
Wind, cobbles and dinner
The meltemi blows hard in July and August, churning the north beaches. Chora's lanes are stroller-hostile; tavernas start serving around seven.