Formentera in October is the version of the island most summer visitors never get to see. The sea still holds around 22–23°C — warmer than in June, because it has spent the whole summer heating up. Ses Illetes, the most photographed beach in the Balearics, goes from towel-to-towel to nearly deserted within a few weeks. And because October opens our low season, a full private day from Marina Santa Eulalia starts at €999 for the whole boat. There are honest catches, and we'll get to every one of them. But if you're asking whether Formentera is still worth it in October, the short answer is: it's the month we'd pick for ourselves.
That's not just us talking our own book. Formentera's island council actively promotes autumn visits — locals have never treated October as the end of the season, only as the end of the crowds.
What Formentera in October Actually Looks Like
In August, the lagoon off Ses Illetes is a parking lot of superyachts and the sand a mosaic of umbrellas. By mid-October the same water is close to empty. When our skipper cuts the engines off the sandbar, the loudest sound is the anchor chain running out — and then nothing. The light changes too: the sun sits lower, the glare softens, and the famous gradient from white sand through turquoise to deep blue reads more vividly than it ever does under the flat blaze of midsummer.
Ferries still cross from Ibiza, but on a thinner autumn schedule, and the morning wave of day-trippers shrinks to a trickle. Arriving on your own boat, none of that is your problem. On our Formentera day trip we leave Santa Eulalia around 10:00, run south past Cala Llonga and the silhouette of Dalt Vila, and you're swimming at S'Espalmador before most ferry passengers have found the bus stop.
The Sea Is Warmer Than You Think
The Mediterranean is slow to warm and just as slow to cool. That's why early-October water sits around 22–23°C — swimming temperature by almost anyone's standard — and stays inviting well into the month before it gradually cools. Most of our October guests swim at every stop; the crew certainly does. And with far fewer propellers stirring the anchorages, this is when the water is at its clearest.
The air is the part that changes. The morning run south can ask for a sweater, and by the time the anchor is down at Ses Illetes it's usually off again and someone is already on the swim ladder. We can't promise you a forecast — nobody honestly can — but October water is not the obstacle people imagine.
The Mid-October Catch: Closing Kitchens
Honesty first: many of Formentera's famous beach restaurants wind down through October, and a good number close for the season partway into the month. If you come by ferry, that can hollow out the day — fewer crossings, fewer open kitchens, long distances between them. On a private charter the problem mostly disappears. Our food package (€45 per person) puts a Mediterranean lunch board, fresh fruit and water on the teak table wherever we happen to be anchored, and the drinks package (€35 per person) keeps the cava cold beside it. When you'd rather eat ashore, our concierge calls ahead and books a table where the kitchen is genuinely still open — rather than you guessing from an out-of-date website.
If a long lunch is the point of your day, read our guide to Formentera's beach restaurants worth mooring for — and tell us your October date early, so we can check what's open before you set your heart on a particular terrace.
The Crossing in October, Honestly
October brings real weather. Plenty of days are flat and glassy, especially in the morning; some days the wind simply says no. Our skipper reads the forecast the evening before and tells you straight. On a good window we make the crossing exactly as in summer. On a doubtful day we'll propose the sheltered east coast — our home water around Santa Eulalia — or shift your date if your plans allow. That flexibility is the private boat's quiet advantage in autumn: one boat, one plan, built around actual conditions instead of a fixed timetable.
The same logic applies once you're there. If a breeze is working into Ses Illetes, Cala Saona on the west side often lies calm — we wrote a whole piece on letting the wind pick between Ses Illetes and Cala Saona. In October that call matters more than in July, and it's precisely what a skipper is for.
What an October Day to Formentera Costs
- Full-day charter (8 hours, typically 10:00–18:00): from €999 per boat in October — our low-season rate, up to 10 guests, professional skipper always included.
- Fuel is charged separately, by actual usage.
- Optional: drinks package €35 pp, Mediterranean lunch board €45 pp.
For context: September is shoulder season at €1,250–€1,450. Wait a few weeks and the same eight hours, the same boat and the same lagoon cost from €999 — with a full boat of ten, that's roughly €100 per person before fuel and extras, for a private day with your own skipper.
Picking Your October Day
Early October gives you the warmest water and the most open kitchens; late October gives you the emptiest lagoon. Either way, build in a little flexibility if you can — a movable date is the best weather insurance there is — and take the earlier start if our skipper suggests one, since autumn mornings usually bring the calmest water and the light goes earlier in the evening. And if your travel dates land later in the year, the season doesn't simply stop: here's what a winter charter day in Ibiza looks like.
