BOAT-COMPARATOR Guide

Olbia or Cagliari: renting a boat in the north or south of Sardinia?

The Costa Smeralda and the Maddalena archipelago from Olbia, or the coves of Villasimius and the south from Cagliari: two very different Sardinias, and how to choose your base.

Sardinia has the most emerald water in Italy, but it's sailed from two opposite poles. In the north, Olbia opens the Costa Smeralda and the Maddalena archipelago; in the south, Cagliari commands the coves of Villasimius and a more low-key coast. The choice reshapes the whole trip.

Olbia and the north: the postcard

Olbia is the gateway to the Costa Smeralda and the Maddalena archipelago, a national park of granite islands and transparent waters among the finest anchorages in the Mediterranean. It's the most popular sector — and the priciest in high season — with upmarket marinas such as Porto Cervo, and the neighbouring bases of Portisco and Cannigione. Our guide to the Costa Smeralda and Maddalena covers the highlights.

Cagliari and the south: wilder, more accessible

Cagliari, the capital, opens onto the Gulf of Angels, the long Poetto beaches and, to the east, the marine protected area of Villasimius and Capo Carbonara. The coast is superb and often less crowded than the north, with generally gentler prices outside the peaks. It's the choice for those who want beautiful coves without the Costa Smeralda crowds, as told in our guide to Cagliari and southern Sardinia.

Anchoring without harming the seagrass

North and south alike, the seabed is carpeted with Posidonia, the protected seagrass that gives the water its clarity — and anchoring on it is increasingly regulated. A study by Marco Milazzo and colleagues in an Italian marine protected area, published in 2004 in the Journal of Experimental Marine Biology and Ecology (see the study on Google Scholar), measured just how much the anchor — especially as it sets and tears the meadow — damages Posidonia. In practice: anchor on light sand, use mooring buoys where they exist, and respect the no-anchor zones. Our guides to Posidonia rules and to anchoring right detail the moves.

Weather and logistics

The north is more exposed to the mistral pouring down from the Strait of Bonifacio; the south sees more southerly winds. Either way, reading the marine forecast shapes the programme. On access, Olbia and Cagliari each have their own airport.

Verdict

Choose Olbia for the legendary Maddalena and Costa Smeralda, even at a premium; Cagliari for a quieter, more affordable Sardinia. Compare the real fleets of both bases — and of all of Sardinia — on Boat-Comparator before booking.

Compare the platforms now →

Also worth reading

• How much does it cost to rent a boat in 2026? Real prices
• License-Free Boat Rental in France: Rules, Prices & Where to Book
• Renting with or without a skipper: how to choose