Ses Illetes Beach, Formentera: The Complete Guide (Access, Rules, Tips & How to Arrive in Style)

Ses Illetes isn't just a pretty beach — it's a beach with credentials. TripAdvisor has placed it in its global Travellers' Choice top 25 multiple years running, and in 2022 it ranked second in Europe. Condé Nast Traveller, National Geographic, and Forbes have all listed it among the continent's finest. Those rankings rest on something more durable than aesthetics: the ecology beneath the water.

The beach occupies the western shore of the Trucadors peninsula, a narrow 4-kilometre sand spit that stretches northward from Formentera toward the islet of Espalmador. On both sides, the water is extraordinarily shallow for hundreds of metres — in places you can wade out 150 metres and still be knee-deep. That geometry, combined with the absence of river outflows and industrial activity, creates near-zero turbidity. But the real secret lies below the surface.

The seabed surrounding the peninsula is carpeted with Posidonia oceanica meadows, a species of seagrass — not algae — that is one of the oldest and largest living organisms on Earth. The Posidonia beds between Ibiza and Formentera are estimated to be approximately 100,000 years old. They act as a living filtration system, oxygenating the water, trapping sediment, and producing the legendary turquoise colour that photographers struggle to do justice to. It is precisely because of these meadows that the entire area was designated a UNESCO World Heritage Site in 1999 — a status expanded in 2013 to cover additional marine zones.

One important clarification for searchers: Ses Illetes (Formentera) is a completely different beach from Illetes on Ibiza's southwestern coast. The two names cause consistent confusion online. If you're looking for the UNESCO-protected, TripAdvisor-ranked beach on the Trucadors peninsula, you want Formentera — and you want Ibiza & Formentera on a Sailboat as the most elegant way to get there.

There is a version of Ses Illetes that most visitors never experience. It involves no ferry queue at Ibiza Town or Sant Antoni, no vehicle fee control point, no L3 bus schedule, and no scramble for a patch of sand. Instead, your boat drops anchor in the turquoise anchorage directly off the Trucadors peninsula, and you slip into the water from the deck.

The public fast ferry from Ibiza to Formentera's La Savina port takes approximately 35 minutes and costs around €31 each way — a perfectly valid budget option. But it deposits you at the port, where you still need transport, still need to navigate the access regulations, and still arrive at the same crowded shoreline as everyone else on that sailing.

Private sailboats and catamarans departing from Ibiza take a different route. The anchorage area off Ses Illetes and the northern tip of the Trucadors peninsula is one of the classic stops on Ibiza–Formentera sailing itineraries — a wide, calm bay where boats moor in just 3–5 metres of crystal water directly above the Posidonia meadows. From the deck, you snorkel over seagrass that is older than any human civilisation. You have lunch on board with the beach as your unobstructed backdrop. You return to Ibiza as the sun drops, with a glass of something cold in hand.

Local Cool Tour's 8-hour full-day format is specifically built to give you enough time to properly enjoy the anchorage rather than rushing a 90-minute stop. The Formentera & Ibiza Small Group Trip by Catamaran offers the same anchorage experience in a sociable small-group format — a genuinely affordable way to reach Ses Illetes without any of the land-based logistics.

For those who prefer the full private experience, the Ibiza & Formentera on a Sailboat tour offers flexible itinerary options tailored to your group.