Sardinia Weather
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Live forecasts update automatically; written guidance last reviewed 14 June 2026 by the Pressorbit weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Unlike the UK’s maritime climate where conditions change hour by hour, Sardinia’s Mediterranean weather offers reliably warm, dry summers and mild winters. The live forecast above shows current conditions for Cagliari, the island’s southern capital — a useful starting point for planning your trip.
What does the live forecast mean for your Sardinia trip?
The conditions you see above give a real-time snapshot for Cagliari, but remember that Sardinia’s weather varies across the island. Olbia, in the northeast, tends to be slightly cooler and windier than the south, while the interior mountains can be noticeably cooler at night. The 7‑day outlook shown in the live widget reflects the typical Mediterranean pattern: stable highs during summer, with occasional Atlantic fronts bringing rain from autumn through early spring.
Weather month by month – temperatures, sunshine and rainfall
Spring (April and May)
April sees average highs of 18–20°C in Cagliari, with lows around 10°C. Sea temperatures hover near 15°C, so swimming is for the hardy. Rainfall is moderate – about 40–50mm over the month – but sunshine hours climb to around 7 per day. By May, highs reach 23–25°C, sea temperatures rise to 18°C, and rainfall drops to 30mm. This is a lovely time for hiking and sightseeing without the peak summer crowds.
Summer (June, July and August)
June brings average highs of 28°C, with sea temperatures around 21°C – ideal for first swims. July and August are the hottest months: Cagliari regularly sees 32–34°C, and Olbia a degree cooler. Night temperatures stay above 20°C. Sea water peaks at 25–26°C. Rainfall is negligible – typically less than 10mm per month – and sunshine exceeds 12 hours a day. The live forecast above will often show clear skies and light easterly breezes. August, though scorching, is the busiest month; if you prefer quieter beaches, aim for June or September.
Autumn (September, October and November)
September remains very warm: Cagliari averages 29°C highs, sea temperatures of 24°C, and about 8 hours of daily sunshine. October cools to 23°C highs, with sea around 21°C – still pleasant for swimming in early October. Rainfall increases sharply in October to around 65mm, and November sees 80mm with highs of 17°C. November is the month when many hotels close for the winter, and storms can interrupt ferries. For the best balance of warmth and dryness, September is the outstanding choice for a Sardinia break. The sardinia weather october is often still good during the first two weeks, but later in the month becomes more unpredictable.
Winter (December to February)
December sees Cagliari highs of 15°C and lows of 8°C. Sea temperatures drop to 16°C. Rainfall is at its peak – around 70–80mm per month – and storms are common, though the island rarely gets frost at sea level. January and February are similar, with occasional snow on the Gennargentu mountains. If you’re visiting for winter hiking or city breaks, the live forecast will be essential for planning wet-weather activities.
Best months to visit Sardinia
For sunbathing and swimming without the extreme heat of August, the best months are June and September. June offers highs around 28°C, sea temperatures of 21°C, and very little rain – ideal for beach holidays. September is equally warm (29°C) with sea still at 24°C, and far fewer tourists. May is excellent for active holidays – cycling, hiking, exploring archaeological sites – with comfortable daytime temperatures and plenty of daylight. If you prefer cooler weather for city trips, April and October (first half) provide pleasant conditions with fewer crowds. Avoid August if you dislike intense heat and packed beaches.
What to pack for a Sardinia holiday
In summer (June–September): lightweight cotton clothing, a hat, sunglasses, high‑factor sunscreen, and swimwear are essential. A light jacket or pashmina helps against evening breezes. For spring and autumn (April, May, October): pack layers – T‑shirts, a fleece or light sweater, a waterproof jacket, and comfortable walking shoes. November to March requires warm layers, a thick coat, and an umbrella. Don’t forget insect repellent, especially in coastal areas after sunset. If you plan to visit the mountainous interior, bring sturdier footwear even in summer.
Rainy season and quiet season in Sardinia
The rainy season runs from October to March, with peak rainfall in November and December. Many beach resorts close from late October until Easter, so if you visit outside those months, check accommodation and ferry schedules. The quiet season (November–April) sees far fewer tourists, lower prices, and a more local atmosphere. Cagliari and Olbia remain open year‑round, with flights from the UK continuing, though less frequently. The live forecast above is especially valuable during the quiet season to track Atlantic fronts.
Frequently asked questions about Sardinia weather
How hot is Sardinia in September?
September is one of the warmest months for swimming: midday highs in Cagliari reach 29°C, and the sea averages 24°C. You can expect around 8 hours of sunshine daily, with only occasional showers – typically less than three rainy days per week. Evening temperatures drop to a pleasant 19°C.
What is the weather like in October in Sardinia?
October brings average highs of 23°C in Cagliari and 21°C in Olbia. Sea temperature is still a warm 21°C during the first half, so swimming is possible. Rainfall increases through the month, with about 65mm spread over 8–10 wet days. Sunshine averages 6 hours per day.
Is Sardinia warm in April?
April is mild rather than hot: daytime highs in Cagliari reach about 18–20°C, and nights are cool at 10°C. Sea temperatures are around 15°C, so swimming is not comfortable without a wetsuit. There’s moderate rainfall (40–50mm) but also 7‑hour sunshine days – good for exploring outdoors.
How cold is Sardinia in December?
December is the coolest month, with Cagliari highs of 15°C and lows of 8°C. Olbia is a degree colder. Sea temperature drops to 16°C. Rain falls on about 12 days, and strong winds are common. Snow is very rare near the coast but can fall on higher ground.
Does Sardinia have a wet season?
Yes, the wet season runs from October to March. November and December are the wettest, with around 80mm of rain per month in Cagliari. Summers are almost completely dry – June, July and August each see less than 10mm of rain. The shoulder months (April, May, September) have moderate rainfall.
For more comparisons with other Mediterranean destinations, see our Crete Weather and Malta Weather guides. If the live forecast above shows unsettled conditions, check the 10‑day forecast for a broader picture, or monitor UK weather warnings before departure if you’re transiting through British airports.
