The best time to go to Agios Sostis is during the shoulder seasons, specifically May, early June, or September.
This period offers pleasant weather, with warm temperatures superb for swimming and island exploration, without the intense heat and larger crowds of July and August. You'll find that most businesses are open, and the island is lively, but you'll have more space to enjoy the beaches and attractions.
For couples seeking a romantic getaway, these months provide a more tranquil experience. You can enjoy candlelit dinners by the sea, stroll along less crowded beaches, and explore the charming villages at a relaxed pace. Early June or September are particularly good for this, as the peak season rush hasn't fully set in or has already subsided.
Families travelling with children will also appreciate the shoulder seasons. The milder temperatures are more comfortable for little ones, and the beaches are less packed, making it easier to keep an eye on everyone.