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Climate - Sardinia (Italy)


Average weather, temperature, rainfall, sunshine hours

Flag - Italy

Position of Sardinia in Italy, map


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Index


  • Introduction
  • Coast and plain - Alghero
  • Inland areas - Fonni
  • Best Time

Introduction



In Sardinia, an island of Southern Italy, the climate is Mediterranean, with mild, fairly rainy winters and hot, sunny summers, a bit sultry but tempered by sea breezes. At sea level, the daily average temperature ranges from about 9,5 °C (49 °F) in January and February to about 25 °C (77 °F) in July and August.
Rainfall is not abundant, in fact, it typically ranges from 400 to 550 millimeters (15.5 to 21.5 inches) per year on the coast (but it can locally drop even below, for instance, in the southeastern tip of the island) and follows the Mediterranean pattern, that is, it is more common in autumn and winter, it gradually decreases during spring, and hits a low in summer, when it almost never rains. In inland areas, rainfall locally exceeds 700 millimeters (27.5 inches) per year in hilly areas and 1,000 mm (40 in) in the mountains.
However, sometimes there may be more abundant rains than normal, which can persist in the same areas for several hours and cause flooding, and this happens more easily in autumn and on the eastern side, as happened in November 2013 in the Olbia area and in the November 2020 in the Nuoro area.
Sardinia is a windy island, especially from October to April. This happens because of the Maestrale, the northwest wind, which blows from France (where it is called Mistral) and affects particularly the western part and the Strait of Bonifacio, but also because of the "Ponente", which blows from the west. In summer, sea breezes blow, but they are welcome because they make the heat more bearable.
On other occasions, the Sirocco can blow from the south-east, bringing heat waves from Africa, which are felt especially in inland plains and valleys, with peaks of 40 °C (104 °F) and more.
The island is quite sheltered from cold waves; along the coasts and in the plains, snowfall is quite rare, but it can occur in the coldest winters (as happened in January 1985 and February 2012), more easily in the north of the island. An exception is represented by the Costa Smeralda ("Emerald Coast", see Olbia), in the northeast, where snowfalls, though usually not abundant, are a bit more frequent.
Night frosts in the plains are rare, and when they occur, they are light: generally the temperature does not drop below -2/-3 °C (27/28 °F). On the other hand, in inland areas, already at an altitude of a few hundred meters (see Nuoro, Macomer, Tempio Pausania), snow is relatively more frequent and abundant.

Coast and plain


Alghero

In Alghero, located on the coast, in the north-west of the island, the average temperature ranges from 9.5 °C (49.5 °F) in January and February to 25 °C (77 °F) in August. Here are the average temperatures.
Alghero - Average temperatures (1991-2020)
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January5149.6415849.3
February5149.6405849.2
March61711.4436252.5
April81913.8476756.8
May122417.6537563.7
June152821.7608371.1
July183124.5648876.1
August183224.9658976.8
September162721.6608170.9
October132418.3557564.9
November91914496657.2
December61510.9436051.5
Year1122.116.551.871.761.5

In Alghero, rainfall amounts to 570 mm (22.5 in) per year, with a maximum in October and November, and rare rains in the summer (in Cagliari, the largest city and the capital of the region, situated on the coast, in the southern part of the island, rainfall is lower, and amounts to 425 mm or 16.5 in per year). Here is the average rainfall in Alghero.
Alghero - Average precipitation
MonthMillimetersInchesDays
January702.88
February552.28
March602.47
April5027
May2514
June150.62
July50.21
August2512
September401.64
October803.17
November803.18
December652.67
Year57022.465

The amount of sunshine in Sardinia is very good in summer, especially along the coast, when clear skies prevail, while it's not so high from November to February. However, some sunny periods can also occur in winter.
Here are the average daily sunshine hours in Alghero.
Alghero - Sunshine hours
MonthAverageTotal
January4125
February5140
March6185
April7215
May8.5270
June10300
July11.5350
August10315
September8.5250
October6.5200
November4.5140
December3.5115
Year7.12605

In inland plains (which in any case are not extensive), the climate is slightly more continental. Here, for example, are the average temperatures of Decimomannu, about 20 kilometers (12 miles) north-west of Cagliari.
Decimomannu - Average temperatures (1991-2020)
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January5159.9415849.8
February51510415950
March71812.2446453.9
April92014.7486958.5
May132518.7557765.6
June173023.2628573.7
July203326.2679179.2
August203326.7689280.1
September172922.9638473.2
October142519.2577666.6
November101914.4506657.9
December61611446051.8
Year11.923.117.453.373.563.5

Caprera

The temperature of the sea is fairly uniform on the island, and just lower in the western part. The sea is warm enough for swimming from July to September; in contrast, it's a bit cool in June and October. Here, for example, is the sea temperature near Porto Cervo, on the Costa Smeralda.
Porto Cervo - Sea temperature
MonthCelsius (°C)Fahrenheit (°F)
January1457
February13.556
March1457
April1559
May17.564
June2170
July2475
August2577
September23.574
October2170
November1865
December15.560
Year18.665.4

Inland areas



In the interior, where hills and mountains are found, the climate becomes gradually colder with increasing altitude, and as mentioned, the rains in some areas are more abundant as well, so much so that thick forests are found. The highest peak, 1,834 meters (6,017 feet) high, is located in the Gennargentu Massif, where snowfalls are quite frequent in winter.

Gennargentu

Fonni

In Fonni, located north of Gennargentu, at 1,000 meters (3,300 feet) of altitude, winter is cold, while summer is generally warm but without excess. Here, the temperature dropped to -9.4 °C (15 °F) in February 1956, to -8 °C (17.5 °F) in January 1963, and to -10 °C (14 °F) in January 1981. In the summer, it reached 36 °C (97 °F) in July 1982 and 1983. Here are the average temperatures.
Fonni - Average temperatures
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January274.5364540.1
February274.5364540.1
March3106.5375043.7
April5128.5415447.3
May91713486355.4
June132217.5557263.5
July162621617969.8
August172621.5637970.7
September132217.5557263.5
October101613506155.4
November6118.5435247.3
December396374842.8
Year8.315.511.8546.959.853.5

Fonni receives 750 mm (29.5 in) of rain or snow per year. Here is the average precipitation.
Fonni - Average precipitation
MonthMillimetersInchesDays
January853.39
February803.110
March702.89
April853.311
May602.47
June301.24
July120.52
August150.62
September5026
October7539
November953.711
December903.58
Year75029.588

Best Time


The best time to visit Sardinia for a beach holiday is the summer, from June to August. The sea temperature is comfortable enough from July to September, although in September, which in any case is still a good month (especially in the first half), the first periods of bad weather can occur. In June, as mentioned, the sea is still a bit cool, while it's even cold in May, when the air can sometimes be a little cold for sunbathing as well.
April and May are advisable months for hiking and for visiting cities, while in summer, it can sometimes be too hot to get around with ease. In October, temperatures are mild or pleasantly warm, but the days are shorter and the weather can be rainy and windy.

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