Sardinia in September: Weather, Beaches and Travel Guide

Sardinia in September is one of the best choices for travelers who want warm-sea days without the full pressure of August. Daytime temperatures near the coast often reach 79–86°F (26–30°C), while the average September sea temperature in Olbia is about 73°F (23°C).

The first half of the month offers the most reliable conditions for a beach-focused trip. The second half can still be excellent, with quieter beaches and a slower rhythm, provided you keep your plans flexible. For American travelers, Delta’s first seasonal nonstop service from New York–JFK to Olbia makes the island easier to reach in 2026—but availability is already limited on some September dates and cabins.

What is the weather in Sardinia in September?

September weather in Sardinia, Italy, remains distinctly late-summer, especially during the first half of the month. Conditions vary across the island, particularly between coastal areas and inland plains.

Based on ARPA Sardegna summaries covering 2016–2025, daytime highs along the coast and in lowland areas are often between 79 and 86°F (26–30°C). Inland plains can still exceed 86°F (30°C), while coastal nighttime lows frequently fall between 61 and 68°F (16–20°C).

Beach days are therefore still realistic, but evenings feel milder than they do in August. A light layer is useful after sunset, particularly when dining outdoors or spending time near a marina.

September is more variable than July and August. Rain often arrives as a localized storm or brief episode rather than as continuous bad weather across the entire island.

The period analyzed by The Sardinia Guide included particularly favorable Septembers in 2019, 2021, and 2023, while 2016, 2020, and 2024 were less stable. These differences are a reason to plan flexibly—not a reason to avoid the month.

For a beach-first vacation, choose early to mid-September. Later in the month, leave enough flexibility to move a boat excursion, beach reservation, or longer drive if the forecast changes.

Can you swim in Sardinia in September?

Yes. September remains a strong swimming month, and the sea retains much of the warmth accumulated during summer.

WeatherSpark data analyzed by The Sardinia Guide places Olbia’s average September water temperature at about 73°F (23°C).

In Northeast Sardinia, the typical warm-water period continues until approximately:

• September 22 in La Maddalena, Santa Teresa Gallura, and Porto Cervo;
• September 23 around Arzachena and Costa Smeralda;
• September 24 in Olbia;
• September 25 in San Teodoro.

On other coasts, it continues until around September 27 in Alghero and Dorgali.

These are climatic reference points, not closing dates for the sea. The practical distinction is that the first half of September provides the most consistent combination of warm water, coastal weather, and operating seasonal services.

The second half can still deliver excellent swimming conditions, often with more space on the sand.

For broader month-by-month context, read The Best Time to Visit Sardinia.

Flying nonstop from New York to Olbia in September 2026

Delta launched its first seasonal nonstop flight from New York–JFK to Olbia in May 2026, giving American travelers a direct gateway to northern and east-central Sardinia.

Read our complete guide to Delta’s New York–JFK to Olbia route for the wider flight and airport context.

Flight DL216 departs JFK at 6:25 p.m. and arrives in Olbia at 9:00 a.m. the following morning. The scheduled flight time is 8 hours and 35 minutes, aboard a Boeing 767-300ER with 211 seats.

The September 2026 schedule includes 17 departures from JFK, operating on Mondays, Wednesdays, Fridays, and Sundays. Across those departures, Delta is offering up to 3,587 seats from New York to Olbia during the month.

The final September departure leaves New York on September 30 and arrives in Olbia on October 1.

Travelers should book soon rather than assume that shoulder season means unlimited choice. A Delta.com check conducted by The Sardinia Guide on August 21, 2026 found selected early-September Main Cabin one-way fares between $1,346 and $2,617, with some premium cabins already unavailable on specific departures.

That does not mean every flight is sold out. However, the combination of a limited weekly schedule and a seasonal route makes last-minute flexibility harder.

Always confirm current schedules, fares, aircraft, and availability directly with Delta before booking.

The best beach directions from Olbia

Olbia is the practical airport gateway to northern and east-central Sardinia, including Costa Smeralda, San Teodoro, La Maddalena, Santa Teresa Gallura, and the Gulf of Orosei.

Several distinct coastal areas can be reached from the city by car. Instead of trying to collect every beach, choose one direction each day.

1. Closest beaches: Olbia, Golfo Aranci, and San Teodoro

For the shortest beach days from Olbia, look north toward Pittulongu, Il Pellicano, Mare e Rocce, Bados, and Nodu Pianu, with Cala Sabina and Cala Moresca farther toward Golfo Aranci.

South of the city, Porto Istana and Porto Taverna lead toward Cala Brandinchi and Lu Impostu.

Use our guide to the best beaches near Olbia to compare access, driving time, parking, and services.

2. Costa Smeralda

The Costa Smeralda route includes Rena Bianca near Portisco, Liscia Ruja, Capriccioli, Spiaggia del Principe, Romazzino, and Grande Pevero.

Our complete Costa Smeralda guide explains how its beaches, hotels, Porto Cervo, marinas, and resort areas fit together. For a beach-by-beach overview, use the guide to 28 Costa Smeralda beaches.

Combine one or two beaches with an evening in Porto Cervo rather than treating the coast as a checklist.

3. The east coast

For a longer outing, drive toward Berchida and Biderosa, or plan well ahead for Cala Goloritzé and Cala Mariolu.

These are not casual additions to an Olbia beach day. The distances and controlled access require an early start and a clear plan.

4. Palau, La Maddalena, and Santa Teresa Gallura

This northern route can include the beaches of the La Maddalena Archipelago, Cala Coticcio, Porto Pollo, Rena Bianca in Santa Teresa Gallura, Santa Reparata, and Capo Testa.

A boat excursion is often the most coherent way to experience the archipelago.

5. Northwest Sardinia

La Pelosa and the beaches around Alghero belong to a separate westbound road trip. They can be reached from Northeast Sardinia, but they deserve a full day rather than being paired with Costa Smeralda.

Several beaches remain regulated in September.

Cala Brandinchi and Lu Impostu require reservations and QR codes through September 30, as does Rena Bianca in Santa Teresa Gallura. La Pelosa remains regulated through October 15.

Cala Coticcio has controlled guided access, while Cala Goloritzé and Cala Mariolu require advance planning.

Check the current details in our Sardinia beach access and umbrella restrictions guide before setting out.

Do you need a rental car in September?

For most independent travelers, yes.

A rental car becomes essential if you want to move beyond your hotel or resort, compare beaches according to wind and weather, visit San Pantaleo, or connect Olbia with Costa Smeralda, San Teodoro, Palau, and the east coast.

September reduces some of the pressure experienced in August, but it does not change Sardinia’s geography.

Read our practical guide, Do You Need a Car in Sardinia?, and reserve early if your travel dates coincide with one of the Porto Cervo regatta weeks.

San Pantaleo: a Thursday morning worth planning around

San Pantaleo is a chic Gallurese village set beneath the granite formations of Cugnana.

Its combination of stone architecture, artisans, small-scale fashion, and café life can recall Saint-Paul-de-Vence in Provence, but its identity remains firmly rooted in Gallura and the culture of the traditional stazzi.

The village developed in the early 19th century around a small stazzo. Film enthusiasts may also recognize its brief appearance in the 1977 James Bond movie The Spy Who Loved Me, during Bond and Anya Amasova’s passage in the Lotus Esprit.

San Pantaleo is just over 14 miles (22 km) from Olbia Costa Smeralda Airport. Rena Bianca near Portisco is about 4.3 miles (7 km) away—roughly a 10-minute drive—and Porto Cervo is approximately 8.7 miles (14 km) away.

The San Pantaleo market is held only on Thursday mornings, from 8:00 a.m. to 1:00 p.m., generally from early May through October 15.

Stalls fill the church square and surrounding lanes with Sardinian ceramics, handmade textiles, linen clothing, artisan jewelry, woven bags, cheeses, cured meats, pane carasau, traditional sweets, honey, fruit, and local produce.

A simple September plan is to visit the market in the morning, have lunch in the village, and continue to a nearby beach in the afternoon.

Boat trips are still running—with a calmer rhythm

September is an excellent month for seeing the coast from the water.

La Maddalena Archipelago excursions depart from Palau, Cannigione, and selected operators in Porto Cervo. Tavolara trips leave from Porto San Paolo and Olbia.

There are fewer departures than in August, though not few. The reduced volume can create a calmer experience, but it also makes advance confirmation important.

Private boats and RIBs can be arranged for the archipelago, Tavolara, or to follow the Porto Cervo regattas from outside the racecourse and in accordance with safety rules.

For a tailored private day—including, where possible, a reserved lunch on a small island inhabited mainly by goats—email hello@thesardiniaguide.com or send a DM to @thesardiniaguide.

Ask us to help arrange it. Availability and conditions depend on the operator, weather, permissions, and local rules.

September regattas bring Porto Cervo Marina to life

Porto Cervo is not winding down during the first half of September.

The Yacht Club Costa Smeralda calendar includes two major international events:

• Maxi Yacht Rolex Cup, September 6–12;
• Rolex Swan Cup, September 13–19.

During these weeks, Porto Cervo Marina has a strongly international atmosphere, with crews and yachts arriving from around the world, boats on the docks, and related parties and social events.

You can watch the fleet from the old lighthouse at Capo Ferro or follow the racing by boat, while remaining outside the racecourse and respecting all safety instructions.

Private regatta-viewing arrangements can also be requested through the contacts above. Availability depends on the operator, weather, race restrictions, and port conditions.

What stays open in Porto Cervo?

Porto Cervo remains worth visiting in September.

Boutiques, restaurants, hotels, and nightlife venues continue operating, although the seasonal calendar becomes progressively narrower as the month advances.

Our Costa Smeralda beach clubs guide explains the different daytime, sunset, dining, and nightlife formats available along the coast.

Confirmed 2026 closing dates provided to The Sardinia Guide include:

• Waterfront Costa Smeralda: Monday, September 7;
• Ritual: during the night of September 11–12;
• Phi Beach: Saturday, September 12;
• Nikki Beach Costa Smeralda: Sunday, September 13;
• Vesper Beach Club: Sunday, September 20;
• Cone Club at 7Pines: Sunday, September 20.

These are individual venue dates, not a general closing of Costa Smeralda. Confirm directly before making a special trip.

Hotel availability checked on Booking.com on August 21, 2026 also indicates that the season extends beyond September at several leading properties.

Pitrizza showed a final bookable night of September 24, with checkout on September 25. Romazzino, A Belmond Hotel, showed availability through October 4, with checkout on October 5.

W Sardinia Poltu Quatu showed availability through October 22, with checkout on October 23, while Cala di Volpe showed availability through October 24, with checkout on October 25.

Booking.com availability is not an official hotel closing announcement and can change. It does, however, confirm that September is not an empty after-season period.

For the wider accommodation picture, read our guide to the best hotels in Costa Smeralda.

September is harvest season in Gallura

September also brings the grape harvest to Sardinia.

In Gallura, this means a closer look at Vermentino di Gallura DOCG and the landscapes and wineries behind the region’s best-known wine.

For a broader introduction to regional food, wine, villages, and coastal experiences, see our guide to the best things to do in Sardinia.

Harvest visits are not standard walk-in activities. They depend on the winery, the vintage, daily work, and the harvest schedule.

The Sardinia Guide can help request personalized winery visits, tastings, or harvest-related experiences with selected producers.

Email hello@thesardiniaguide.com or DM @thesardiniaguide and ask us to help arrange it. Availability and conditions always depend on the winery.

Is early or late September better?

Choose September 1–15 if your priorities are beach clubs, the broadest range of seasonal services, warm-water days, and the Porto Cervo regattas.

This is also the period when flight and hotel demand can remain high.

Choose the second half if you value quieter beaches and a slower pace and are comfortable with more weather variability and a smaller selection of seasonal venues.

The sea is often still warm, particularly through approximately September 22–25 in Northeast Sardinia, but flexible planning becomes more valuable.

Frequently asked questions

Is Sardinia hot in September?

It is usually warm rather than intensely hot. Coastal and lowland daytime highs often reach 79–86°F (26–30°C), with cooler evenings than in August.

Can you swim in Sardinia in September?

Yes. Olbia’s average September sea temperature is about 73°F (23°C), and the warm-water period generally continues into the final third of the month across much of Northeast Sardinia.

Does it rain a lot in Sardinia in September?

September is more variable than July and August. Rain can occur, but it often comes as a localized storm or short episode rather than continuous bad weather across the island.

Are Porto Cervo and Costa Smeralda still open?

Yes. Hotels, boutiques, restaurants, marinas, and venues remain active, especially in the first half of the month. Individual beach clubs and seasonal venues close on different dates, so check directly.

Is September crowded in Sardinia?

It is generally less pressured than August. Early September remains lively, especially during the Porto Cervo regatta weeks, while the second half is usually calmer.

Do I need a car in Sardinia in September?

Yes, if you want to explore beyond one resort or town. A car gives you the flexibility to reach beaches, respond to changing weather, and connect Olbia with Costa Smeralda, San Teodoro, Palau, and the east coast.

The verdict

Sardinia in September works especially well for travelers who want a warm sea, beach days, late-summer light, regattas, harvest experiences, and fewer crowds than in August.

If this is your first visit from the United States, begin with our complete Sardinia Travel Guide for Americans.

Book the seasonal JFK–Olbia flight and key reservations early, rent a car, and keep your plans flexible enough to adapt to the weather.

Choose the first half for the fullest coastal season or the second half for more space and a quieter rhythm.