Sardinia weather in September
Averages for 3 places in Sardinia in September, from 30 years of weather data.
Holiday weather in September
Excellent
Best time to visit: June – September
Places in Sardinia in September
Sorted by holiday weather score. Each place links to its own page for September.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 99 | 95 | 63 |
| Day | 30° | 26° | 22° |
| Night | 22° | 19° | 16° |
| Sea | 25° | 24° | 21° |
| Sun | 11 h | 9 h | 6 h |
| Rain days | 2 | 5 | 7 |
Sardinia in September: quick answers
Is it warm in Sardinia in September?
Yes, it is warm. Daytime highs average 26 °C (25–28 °C by place) and nights 19 °C.
Can you swim in Sardinia in September?
Yes. The sea is 23–25 °C, 24 °C on average.
Where is it warmest in Sardinia in September?
The warmest are Cagliari (28 °C), Alghero (26 °C) and Olbia (25 °C).
Does it rain much in Sardinia in September?
Now and then: 5 rainy days on average. Plus 9 hours of sunshine a day.
Is September a good time to visit Sardinia?
Yes, September is one of the best months, with a holiday weather score of 95 out of 100. Best time overall: June – September.
Sardinia month by month
Sardinia: weather by monthWhere to go in SeptemberSea temperature in September
More islands & regions
Italy: all destinationsAll islands & regions
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)