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Live forecasts update automatically; written guidance last reviewed 13 June 2026 by the Insight Britain weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
For a holiday in Cagliari, southern Sardinia’s capital, expect hot, dry summers and mild, wetter winters. The live forecast above shows current conditions for Cagliari, giving you a reliable snapshot before you travel. This guide explains what the weather does month by month, so you can pick the best time for your trip.
What does the live forecast above show for Cagliari today?
The live conditions above are updated automatically from the most recent weather data for Cagliari. They show current temperature, wind speed, humidity and a short-term outlook, so you can check exactly what to expect when you arrive or for your next few days. For a longer view, our 10-day forecast page provides a detailed Sardinia outlook.
What is the climate of Sardinia month by month?
Sardinia has a classic Mediterranean climate. Summers are long, hot and sunny; winters are short and mild with most rain falling between October and March. The sea stays warm enough for swimming from June well into November. Below we break down the year by season, paying close attention to the months readers most often ask about: spring (April, May), summer (June, August), autumn (September, October, November) and early winter (December).
Spring (March to May) – mild and increasingly warm
Spring in Sardinia is a lovely shoulder season. In April, daytime highs in Cagliari reach about 18°C, with sea temperatures around 15°C – still cool for swimming, but pleasant for sightseeing. Rainfall is moderate, with around six wet days. By May, the weather warms to 23°C, sunshine hours increase to nine per day, and the sea begins to warm to 18°C. This is an excellent month for hiking, cycling and exploring the coast without the summer crowds.
Summer (June to August) – hot, dry and busy
June sees Cagliari temperatures climb to 27°C, sea temperatures reach 21°C, and rainfall is very low – perfect for beach holidays. July and August are the hottest months, with August averaging 31°C in Cagliari and sea temperatures peaking at 25°C. The Crete weather guide shows a similar summer pattern, though Sardinia tends to be slightly less humid. Expect wall-to-wall sunshine and very little rain; pack light clothing, sun protection and plenty of water.
Autumn (September to November) – lingering warmth and changing skies
September is often considered one of the best months: Cagliari still reaches 27°C, the sea is 23°C, and rainfall remains low – only about four wet days. October brings a gradual shift: temperatures drop to 22°C, sea temperatures stay at a comfortable 21°C, but rain starts to increase to about seven wet days. In November, Cagliari sees highs of 17°C, sea temperatures around 18°C, and more frequent rainy periods – about ten wet days. The Malta weather guide offers a similar autumn profile, though Malta is slightly warmer in October.
Winter (December to February) – mild, wet and quiet
December in Cagliari is cool but not cold, with highs around 14°C and sea temperatures at 16°C. Rainfall is at its highest – about nine wet days – and sunshine is limited to roughly four hours per day. January and February are similar. This is the low season for tourism; if you visit, bring a waterproof jacket and layers. For a broader perspective on Mediterranean winter weather, see our Cyprus weather page, which has a slightly sunnier winter.
What should I pack for a Sardinia holiday?
Your packing list depends on the season. For summer (June to August): light cotton clothes, swimwear, a sun hat, sunglasses, high-factor sunscreen and a light jacket for cooler evenings. For spring and autumn (April, May, September, October): pack layers – T-shirts, a thin jumper or cardigan, a waterproof jacket for possible showers, and comfortable walking shoes. In October, the sea is still warm enough for swimming, so include swimwear. For winter (November to March): a warm coat, jumpers, waterproof footwear, and an umbrella. The live conditions above can help you fine-tune your packing for the exact week you are travelling.
Frequently asked questions about Sardinia weather
How hot is Sardinia in August?
August is the hottest month. In Cagliari, daytime highs average 31°C, but temperatures can occasionally reach 35°C. The sea is at its warmest – around 25°C – making it ideal for swimming. Humidity is lower than in many coastal areas, so the heat feels manageable.
Is Sardinia weather good in October?
October is a popular shoulder month. Cagliari averages 22°C, sea temperatures stay around 21°C, and there are about seven wet days. The weather is still warm enough for beach trips early in the month, though you may need a jumper in the evenings. It is a great time for sightseeing and hiking.
What is Sardinia weather like in September?
September is very pleasant, with Cagliari reaching 27°C and sea temperatures of 23°C. Rainfall remains low – only about four wet days. The summer crowds have thinned, and the weather is still ideal for swimming, sunbathing and outdoor activities.
Is Sardinia cold in November?
November is mild but wet. Daytime highs in Cagliari are around 17°C, and sea temperatures cool to 18°C – still swimmable for hardy visitors. Expect about ten rainy days, so pack waterproofs. It is a quiet, affordable time to visit, especially for culture and food.