Yes, October suits travelers who want sightseeing, hiking and a swim in one trip. Afternoons reach 75°F (24°C) in Cagliari, the sea is still warm, and the archaeological sites stay open.
Rain becomes a real factor, with five to six wet days in the month.
At a glance
- Afternoon high in Cagliari: 75°F (24°C)
- Night low in Cagliari: 57°F (14°C)
- Afternoon high and night low in Olbia: 75°F (24°C) and 54°F (12°C)
- Rainy days: 5 in Cagliari, 6 in Olbia
- Sea near Cagliari: 71°F
What is the weather like in Sardinia in October?
| Month | Average high | Average low | Rain | Rainy days | Sea |
|---|---|---|---|---|---|
| September | 83°F (28°C) | 64°F (18°C) | 1.5 in (39 mm) | 4 | 76°F (24°C) |
| October | 75°F (24°C) | 57°F (14°C) | 1.7 in (44 mm) | 5 | 71°F (22°C) |
| November | 66°F (19°C) | 50°F (10°C) | 2.8 in (70 mm) | 8 | 66°F (19°C) |
*Long-term monthly averages.*
October is mild and still summery by day. Cagliari reaches 75°F (24°C) in the afternoon and cools to 57°F (14°C) at night. Olbia is close behind, with a night low of 54°F (12°C).
Cagliari sees five rainy days in the month and Olbia six. Plan outdoor sights such as Tharros or the Asinara trails for the mornings, and keep museums for the wetter hours.
September is warmer, with a sea near 76°F and four rainy days in each city. November turns clearly cooler and wetter, at 66°F (19°C) in Cagliari afternoons and eight rainy days. October sits between the two: warm enough for the coast, with the first autumn rain.
Where to go in Sardinia in October
Cagliari
The city is the easiest base for the month, with a night low of 57°F (14°C) that still allows dinners outside with a light layer. The tourist office is on the ground floor of the Town Hall, at via Roma 145. The Nuragica museum experience is on via Roma 191, a good rainy-day stop. The Castle of San Michele, on Via Sirai, hosts exhibitions and lectures.
Olbia
Olbia is the host of the wine festival in the first half of the month. Afternoons reach 75°F (24°C), and six rainy days make a covered backup plan sensible. Museum tastings and weekend events keep the city busy during festival week.
Su Nuraxi di Barumini
This nuragic complex has been a UNESCO World Heritage site since 1997. It is open every day of the year, so October weather decides the visit more than the calendar does. A single ticket also covers Casa Zapata and the Giovanni Lilliu Centre.
Asinara
Asinara National Park sits on the northwestern tip of Sardinia and has been a national park since 1997. Admission is free, and the donkey is the park’s symbol. Choose a dry day for the trails.
Tharros
The ancient city lies in the Sinis landscape, between the sea and the ponds. Phoenician colonists founded it at the end of the 8th century BC, and it was abandoned in 1070.
What to do in Sardinia in October
Benvenuto Vermentino in Olbia
The weekend opened to the general public with entertainment and shows.
The festival’s atmosphere reached the whole city for the entire week. Anyone planning around it should book a room before settling on dates, and take the weekday tastings for a calmer pace.
Su Nuraxi di Barumini with a guided tour
The archaeological area can only be visited with a guide. Tours leave every 30 minutes and last about 1 hour. Casa Zapata and the Giovanni Lilliu Centre each have their own guided tour of about 30 minutes, also leaving every 30 minutes.
Tours run in Italian, English and French. The site covers 20000 m² and receives an average of 150000 visitors a year. Arrive at a quiet hour and allow time for all three sites on the single ticket.
Asinara trails by bike, horse or train
Visitors can explore Asinara by mountain bike, on horseback, in an off-road vehicle or by tourist train. The marine protected area dates from 2002.
Park admission is free.
Tharros with a guide
The archaeological area offers guided tours and a bookshop.
Tharros was founded by Phoenician colonists and sits between sea and ponds. Bring a windproof layer for the open ground and sturdy shoes.
Cagliari botanical garden and city parks
The botanical garden covers five hectares and was founded in 1866 by Patrizio Gennari. It is a gentle morning in October’s mild afternoons.
Monte Urpinu Park suits families, picnics and strolls. Monte Claro Park has paths for walking and jogging, though its cultural events are held in summer.
Is Sardinia busy in October?
That week the festival involves the whole city, and the weekend is the public part.
Tourist tax is charged per person and per night, and each municipality sets its own rate. It can reach 5 euros a night. Capoterra applies it from February 1, 2026, for up to 7 consecutive nights, and Loiri Porto San Paolo caps it at 10 consecutive days. Minors up to 14 are exempt in Capoterra, and up to 12 in Sardara.
Can you swim in Sardinia in October?
Yes, the sea is still swimmable. Water was 76°F in September and drops to 66°F in November.
Asinara has a marine protected area, so ask on arrival which stretches are open for swimming. The Caprera information point on turtles and cetaceans offers guided visits.
What to pack for Sardinia in October
October asks for summer clothes by day and a warm layer at night, plus something for the rain.
- A sweater or light jacket for lows of 57°F (14°C) in Cagliari and 54°F (12°C) in Olbia.
- A packable rain jacket for the five to six rainy days.
- Comfortable, non-slip shoes for Su Nuraxi di Barumini.
- Walking or biking shoes for the Asinara trails.
- A swimsuit for a sea at 71°F.
What to know before visiting Sardinia in October
Su Nuraxi can only be seen on a guided tour. Animals are not admitted at Barumini, except guide dogs, and those visit only by reservation. Asinara is reached by sea from Porto Nuovo at Stintino and from Porto Torres, so confirm crossings before building a day around it.
Is October a good time to visit Sardinia?
Yes, October is a good month for travelers who want culture, wine and a still-warm sea in one trip.
Compared with November, it keeps the lighter jackets and the swimming, and has three fewer rainy days.
If swimming is the priority, aim for early in the month or move to September. For sites like Su Nuraxi, Tharros and the Asinara trails, October’s mild afternoons work well. Families can use Asinara’s free admission.
The 2026 festival fell in the first full week of October, so wine lovers should plan the first half of the month.
Sources
- ncei.noaa.gov (https://www.ncei.noaa.gov/products/wmo-climate-normals), checked 2026-10-30
- italia.it (https://www.italia.it/fr/sardaigne/que-faire/la-sardaigne-au-dela-des-plages-laconi–sadali-et-isili), checked 2026-10-30
- fondazionebarumini.it (https://www.fondazionebarumini.it/biglietti-e-orari/), checked 2026-10-30
- fondazionebarumini.it (https://www.fondazionebarumini.it/fr/home-2/), checked 2026-10-30
- sardegnaturismo.it (https://www.sardegnaturismo.it/en/explore/asinara-national-park), checked 2026-10-30
- cultura.gov.it (https://cultura.gov.it/luogo/area-archeologica-di-tharros), checked 2026-10-30
- informacitta.comune.olbia.ot.it (https://informacitta.comune.olbia.ot.it/eventi/benvenuto-vermentino), checked 2026-10-30
- sardegnaturismo.it (https://sardegnaturismo.it/fr/itineraries/les-jardins-historiques-de-la-sardaigne), checked 2026-10-30