Do you need to know, when is the best time to go to Sardinia? Then you should take a look here, what weather you can expect there during the year.
Sardinia is part of Italy. The climate of Italy is very varied, but it is mostly Mediterranean. In the far north the climate is alpine, in south you can expect hot and dry weather. You can expect clearly noticeable difference in temperature between the north and south, in winter the difference can be even 20 grades Celsius (36 grades Fahrenheit).
When speaking about the usual weather in this area, the information is relevant for example for these popular places: Alghero, Arbus, Barbagia, Bosa, Budoni, Cabras, Cagliari, Cala Gonone, Castelsardo, Costa Smeralda, Costa Verde, Isili, Isola dei Gabbiani, Maddalena archipelago, Nuoro, Ogliastra, Olbia, Oristano, Porto Pino, Porto Torres, San Teodoro, Santa Teresa Gallura, Sassari, Sud Sardegna, Tempio Pausania.
Let's look now what weather you can expect in the area around Cagliari and in many other cities. The warmest month here is August, the average maximum temperature is 31.7 ℃ (89.06 ℉). The average minimum temperature in this month is 19.9 ℃ (67.82 ℉). The coldest month here is January, the average maximum temperature is 14.4 ℃ (57.92 ℉). The average minimum temperature in this month is 5.7 ℃ (42.26 ℉). The most rainy month here is November, the average number of rainy days is 7.6. The least rainy month here is July, the average number of rainy days is 0.8. 
When travelling around Sardinia, always consider the altitude of the the place as well. We should remind you, that the highest point in Italy is Mont Blanc (Monte Bianco) de Courmayeur (4748 m) and the lowest point is Mediterranean Sea (0 m). So there are huge differences in altitudes in this country and the weather is very different in them therefore. Keep in mind, that the temperature usually decreases by 1.2 - 1.9 ℃ (2.2 - 3.5 ℉) per 200 m (656 ft), depending on the other conditions. (And we should add, that in the very special condition named thermal inversion even the temperature may be higher in higher altitudes.)
Typical (usual) weather in Sardinia in January is this: The average highest temperature in Sardinia in January is 14.4 ℃ (57.92 ℉). The average lowest temperature is 5.7 ℃ (42.26 ℉). At the beginning of January you can expect higher temperatures, the average highest temperature is around 15 ℃ (59 ℉). At the end of January you can expect higher temperatures, the average highest temperature is around 14.6 ℃ (58.28 ℉). The average number of rainy days in January is 6.8. The average rainfall is 50.9 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 9:27 (hours and minutes), in the middle of the month 9:42 and at the end of the month 10:09.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Sardinia in February is this: The average highest temperature in Sardinia in February is 14.8 ℃ (58.64 ℉). The average lowest temperature is 6.1 ℃ (42.98 ℉). At the beginning of February you can expect lower temperatures, the average highest temperature is around 14.6 ℃ (58.28 ℉). At the end of February you can expect higher temperatures, the average highest temperature is around 15.6 ℃ (60.08 ℉). The average number of rainy days in February is 6.9. The average rainfall is 53.8 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 10:09 (hours and minutes), in the middle of the month 10:42 and at the end of the month 11:19.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Sardinia in March is this: The average highest temperature in Sardinia in March is 16.4 ℃ (61.52 ℉). The average lowest temperature is 7.5 ℃ (45.5 ℉). At the beginning of March you can expect lower temperatures, the average highest temperature is around 15.6 ℃ (60.08 ℉). At the end of March you can expect higher temperatures, the average highest temperature is around 17.7 ℃ (63.86 ℉). The average number of rainy days in March is 6.8. The average rainfall is 39.7 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:19 (hours and minutes), in the middle of the month 11:57 and at the end of the month 12:36.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Sardinia in April is this: The average highest temperature in Sardinia in April is 19 ℃ (66.2 ℉). The average lowest temperature is 8.9 ℃ (48.02 ℉). At the beginning of April you can expect lower temperatures, the average highest temperature is around 17.7 ℃ (63.86 ℉). At the end of April you can expect higher temperatures, the average highest temperature is around 21.2 ℃ (70.16 ℉). The average number of rainy days in April is 7.2. The average rainfall is 40.7 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:36 (hours and minutes), in the middle of the month 13:14 and at the end of the month 13:49.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.
Typical (usual) weather in Sardinia in May is this: The average highest temperature in Sardinia in May is 23.4 ℃ (74.12 ℉). The average lowest temperature is 12.7 ℃ (54.86 ℉). At the beginning of May you can expect lower temperatures, the average highest temperature is around 21.2 ℃ (70.16 ℉). At the end of May you can expect higher temperatures, the average highest temperature is around 25.15 ℃ (77.27 ℉). The average number of rainy days in May is 4.5. The average rainfall is 26.5 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 13:49 (hours and minutes), in the middle of the month 14:19 and at the end of the month 14:42.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Sardinia in June is this: The average highest temperature in Sardinia in June is 26.9 ℃ (80.42 ℉). The average lowest temperature is 16.2 ℃ (61.16 ℉). At the beginning of June you can expect lower temperatures, the average highest temperature is around 25.15 ℃ (77.27 ℉). At the end of June you can expect higher temperatures, the average highest temperature is around 28.75 ℃ (83.75 ℉). The average number of rainy days in June is 2. The average rainfall is 11.7 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 14:42 (hours and minutes), in the middle of the month 14:54 and at the end of the month 14:54.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.
Typical (usual) weather in Sardinia in July is this: The average highest temperature in Sardinia in July is 30.6 ℃ (87.08 ℉). The average lowest temperature is 19.2 ℃ (66.56 ℉). At the beginning of July you can expect lower temperatures, the average highest temperature is around 28.75 ℃ (83.75 ℉). At the end of July you can expect higher temperatures, the average highest temperature is around 31.15 ℃ (88.07 ℉). The average number of rainy days in July is 0.8. The average rainfall is 4 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 14:54 (hours and minutes), in the middle of the month 14:41 and at the end of the month 14:18.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Sardinia in August is this: The average highest temperature in Sardinia in August is 31.7 ℃ (89.06 ℉). The average lowest temperature is 19.9 ℃ (67.82 ℉). At the beginning of August you can expect lower temperatures, the average highest temperature is around 31.15 ℃ (88.07 ℉). At the end of August you can expect lower temperatures, the average highest temperature is around 29.5 ℃ (85.1 ℉). The average number of rainy days in August is 1.3. The average rainfall is 7.7 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 14:18 (hours and minutes), in the middle of the month 13:47 and at the end of the month 13:12.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Sardinia in September is this: The average highest temperature in Sardinia in September is 27.3 ℃ (81.14 ℉). The average lowest temperature is 17.3 ℃ (63.14 ℉). At the beginning of September you can expect higher temperatures, the average highest temperature is around 29.5 ℃ (85.1 ℉). At the end of September you can expect lower temperatures, the average highest temperature is around 25.6 ℃ (78.08 ℉). The average number of rainy days in September is 4.2. The average rainfall is 35.5 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 13:12 (hours and minutes), in the middle of the month 12:35 and at the end of the month 11:57.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Sardinia in October is this: The average highest temperature in Sardinia in October is 23.9 ℃ (75.02 ℉). The average lowest temperature is 14 ℃ (57.2 ℉). At the beginning of October you can expect higher temperatures, the average highest temperature is around 25.6 ℃ (78.08 ℉). At the end of October you can expect lower temperatures, the average highest temperature is around 21.35 ℃ (70.43 ℉). The average number of rainy days in October is 6.4. The average rainfall is 52.4 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:57 (hours and minutes), in the middle of the month 11:19 and at the end of the month 10:43.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Sardinia in November is this: The average highest temperature in Sardinia in November is 18.8 ℃ (65.84 ℉). The average lowest temperature is 9.5 ℃ (49.1 ℉). At the beginning of November you can expect higher temperatures, the average highest temperature is around 21.35 ℃ (70.43 ℉). At the end of November you can expect lower temperatures, the average highest temperature is around 17.2 ℃ (62.96 ℉). The average number of rainy days in November is 7.6. The average rainfall is 58.7 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 10:43 (hours and minutes), in the middle of the month 10:10 and at the end of the month 9:43.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Sardinia in December is this: The average highest temperature in Sardinia in December is 15.6 ℃ (60.08 ℉). The average lowest temperature is 6.9 ℃ (44.42 ℉). At the beginning of December you can expect higher temperatures, the average highest temperature is around 17.2 ℃ (62.96 ℉). At the end of December you can expect lower temperatures, the average highest temperature is around 15 ℃ (59 ℉). The average number of rainy days in December is 7.3. The average rainfall is 49.4 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 9:43 (hours and minutes), in the middle of the month 9:27 and at the end of the month 9:24.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.| Cagliari | temperature: - | highest temperature: 15.6 ℃ (60.08 ℉) | lowest temperature: 6.9 ℃ (44.42 ℉) | rainfall: 49.4mm | rainy days: 7.3 |
| Alghero | temperature: - | highest temperature: 14.6 ℃ (58.28 ℉) | lowest temperature: 6.9 ℃ (44.42 ℉) | rainfall: 63.8mm | rainy days: 7.4 |