Corsica vs Sardinia

Everything else is noise. Bonifacio on Corsica’s southern tip and Santa Teresa Gallura on Sardinia’s northern tip sit 12 km apart and their August sea differs by a tenth of a degree — they are the same water. The spread within Sardinia, Santa Teresa at the top to Villasimius at the bottom, is nine times larger in August than the gap between the islands. The gradient runs north to south, not island to island.

In Sardinia, under the regional bathing ordinance, beach concessions are only obliged to open between 15 June and 15 September, 08:30–19:30. Outside that three-month core, whether a given lido, bar or sunbed operator opens at all is voluntary — the April-to-October bathing season is permission, not a promise.

The Costa Smeralda makes the point sharply. Porto Cervo’s Waterfront — the promenade of shops and bars that is much of the reason to be there — runs 11 June to 7 September 2026. Under thirteen weeks, and that is its longest season ever: local press noted it opened a full month earlier than previous years, meaning it historically did not open until mid-July. The big hotels run longer (Cala di Volpe reopened 16 April, Cervo Hotel 27 March), timed to the late-April Italian holidays.

Corsica has a structural access problem in the shoulder season that Sardinia does not: essentially every international flight to Corsica is seasonal. Year-round service is close to entirely domestic French — Air Corsica keeps Calvi–Paris Orly running all year, but Calvi’s CDG link and the international routes across the island run roughly late June to mid-September. Flying in from outside France in May or October usually means connecting through the mainland, so sort the flights before anything else.

Olbia against Cagliari is the useful pair. The crush is regional, not island-wide: southern and western Sardinia in August feel nothing like the north-east. If you have to travel in August, that is the lever to pull.

The other trap is the date. Corsica’s three busiest days of 2023 were 9, 11 and 14 August — the peak is the run-up to 15 August, not the end of the month. That is a public holiday in both France and Italy (l’Assomption and Ferragosto), and Italian firms commonly shut for a fortnight around it. In 2026 it falls on a Saturday, so both islands peak on the same weekend.

Turn up at La Pelosa, Cala Goloritzé, Tuerredda or the San Teodoro beaches without a booking and you will not get on the sand — and the windows bite: Tuerredda opens at 08:00 for the following day, La Pelosa’s 09:00 release is gone by about 09:03, and Goloritzé is released only 72 hours ahead. On these beaches the binding constraint is the booking window, not what time you arrive. The full table — all seven beaches with windows, caps, fees and release times — is on our Sardinia guide, along with the sand-removal fines that are enforced at the airports.

On the Corsican side we could not find a single beach charging entry or running a per-person quota for 2026. Corsica restricts boats rather than people — navigation and mooring around the Îles Lavezzi are limited under a 2023 order running to 2028 — and its real constraint is car parking. Rules around the Scandola reserve are actively changing, so check before booking a boat trip there.

Locals do not write off the day — they move a few kilometres and put a headland between themselves and the wind. The full if-this-blows-go-here lookups are on the island guides: Sardinia’s Maestrale swaps (La Pelosa is the one to skip; Alghero and the south-east have the shelter) and Corsica’s (an easterly ruins Palombaggia’s clarity — neighbouring Santa Giulia is usually spared).

One more correction worth making: the Mistral is not Corsica’s dominant wind. Corsican wind inventories put the south-westerly Libeccio at roughly 60% against the Maestrale’s 5%, though those figures come from a regional rather than a meteorological source, so treat them as indicative. By the time it reaches Corsica the Mistral arrives as a westerly anyway, and its real footprint is Cap Corse, the Balagne, the west coast and the Strait of Bonifacio. A Libeccio at Palombaggia is actively good — it blows offshore and flattens the water — though it will carry an inflatable out to sea.

Sardinia: the caps do not stop the crowding. This is the most common complaint on the rationed beaches, and it is not what the booking system implies. At Cala Brandinchi reviewers report reservations sold "beyond the actual capacity", umbrellas packed together with no room to move, and a beach only one or two people deep. At La Pelosa the 09:00 release is gone by about 09:03, the QR check has failed at the gate, and the beach-mat rule is enforced with on-the-spot fines — a towel alone will get you moved on.

Sardinia: Spiaggia Rosa is not pink and you cannot reach it. The famous beach on Budelli has been closed since the mid-1990s. You view it from a boat behind a buoy line, walking on it draws fines that have run from about €300 to €1,800, and the recurring verdict from people who have made the trip is that the pink is long gone.

Corsica: Santa Giulia divides people sharply. Sheltered and genuinely calm — which is why it is the right answer when the wind blows — but it draws more complaints than any other Corsican beach: dried posidonia banked on the sand and floating in the shallows, jet skis and parascending boats, one reviewer’s summary that "it looks like a water park, not a beach". Weed is the variable part — plenty of visitors report none at all, so treat it as luck rather than a permanent flaw. The boat traffic is not variable. Go early either way.

Corsica: the Îles Lavezzi are the classic let-down. The boat trip out of Bonifacio is the island’s most-sold excursion, and in high season reviewers keep arriving at the same verdict — one describes waiting for a paradise island and finding it "not worth it", another counts an uncountable number of boats in the bay and notes that in midsummer a possible paradise also takes a holiday. It is uninhabited: no shops, no food, almost no shade. The fix people who enjoyed it give is the same every time — take the first boat around 09:00 and come back before midday.

Corsica: the famous wild beaches are a project. Saleccia and Lotu in the Agriates are reachable only by boat, on foot, or down about 10 km of rough track that reviewers cover at walking pace — and the boat is cancelled when it blows. Ostriconi is beautiful and notoriously dangerous to swim in rough seas, with currents that carry people offshore.

Two smaller ones worth knowing. Cala Goloritzé is small, and it falls into shade in the afternoon — go in the morning, and carry water, because there are no facilities at the bottom of that walk. And dried seagrass on the sand is normal on both islands rather than a sign of a dirty beach: it is protected, it is left in place deliberately, and how much of it there is varies through the year.

The consequence shows up in every journey. Across thirteen Corsican routes checked on two independent routing engines, every single one averages between 44 and 62 km/h. There is no fast road to escape onto, which is why distances mislead: 130 km from Ajaccio to Bonifacio is a two-and-a-half hour drive.

Sardinia is a different problem. It is fast on the SS131 spine — 70 to 86 km/h, genuinely motorway-like — and then just as slow as Corsica the moment you turn off toward a beach. Olbia to Porto Cervo is 30 km and takes three quarters of an hour.

Car-free is possible in four places, and nowhere else. On Corsica: the Balagne, where a local train runs Calvi to Île-Rousse five times a day — more in July–August — calling at beach halts, and Porto-Vecchio, which has an airport shuttle from Figari plus summer buses to Palombaggia and Santa Giulia — July and August only. On Sardinia: Cagliari, where the airport has its own railway station and CTM runs eight dedicated summer beach lines to Poetto, the busiest every quarter-hour, and Alghero, with the Lido every 20–40 minutes. Everywhere else needs a car. There is no railway at all south of Ajaccio, and the Costa Smeralda has one direct bus a day from Olbia to Porto Cervo.

On how long: no tourist board on either island publishes a minimum. What Corsica’s own board does publish is telling — two separate one-week itineraries, one for the north and one for the south, rather than one week for the island. Its own line is that in Corsica distances are measured in time, not miles. Rough Guides puts a week on Sardinia.

Scale is the other half of it. Sardinia is 24,100 km² to Corsica’s 8,680 — about 2.8 times the size, with 1,850 km of coast against 1,000. A week on Sardinia is a region, not the island.

It survives the winter because it is a subsidised public service, not a commercial route: Moby and Ichnusa Lines run it under a Sardinian regional contract that currently expires on 31 October 2026, so treat anything after that as unsettled. Blu Navy no longer operates this crossing, though older guidebooks still list it.

Your hire car almost certainly cannot come with you. The ferries carry vehicles perfectly happily — the block is entirely on the rental side, and travellers reasonably assume the opposite. Reading the actual terms of nine companies, none permits the crossing as a matter of course. Local firms ban leaving the island outright: one Sardinian contract voids all insurance if you do. Europcar bans sea transport without written authorisation, and its Italian carve-out for ferries covers Italian islands only — which Corsica is not. Hertz’s Italian terms bar its mainland cars from Corsica and Sardinia altogether, and Sixt and Avis leave ferries to the fine print. Assume no unless your contract says otherwise in writing, or hire separately on each island.

One thing is deliberately missing: current prices. Dinner, hotels and car hire all move faster than we could keep them accurate, and a stale price is worse than none — so the page compares what each island costs in effort, access and crowding instead.

Beach caps, fees, ferry dates and opening seasons are all set annually, so treat anything seasonal on this page as worth a re-check before you travel.