Alghero, Sardinia weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Excellent
Best time to visit: June – September
What is the weather like in Alghero, Sardinia in September?
In September, Alghero, Sardinia is warm: daytime highs average 26 °C, and nights cool down to about 20 °C. The sea averages 23.4 °C – pleasant for swimming. With around 9 hours of sunshine a day, there is plenty of sun. Rain falls on about 6 days, adding up to 45 mm. All in all, September is an excellent month for a holiday in Alghero, Sardinia.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 100 | 95 | 63 |
| Day | 29° | 26° | 22° |
| Night | 22° | 20° | 17° |
| Sea | 25° | 23° | 21° |
| Sun | 11 h | 9 h | 7 h |
| Rain days | 2 | 6 | 8 |
More details for September
- Daylight
- 12 h 32 min07:06 – 19:38
- UV index
- 6 · highclear sky, noon (estimate)
- Muggy days
- 10 daysdew point 18 °C or more
- Wind
- 20 km/haverage daily peak
- Cloud cover
- 40 %on average
- Hot days
- 2 days30 °C or more
- Time zone
- UTC+2Europe/Rome
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %91 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 20 %87 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in September
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
Alghero, Sardinia in September: quick answers
Is Alghero, Sardinia hot in September?
Warm rather than hot: in September, daytime highs in Alghero, Sardinia average 26 °C and nights cool to about 20 °C. On about 2 days the thermometer climbs to 30 °C or more.
Can you swim in Alghero, Sardinia in September?
Yes. In September the sea averages 23.4 °C – pleasant for swimming.
Does it rain much in Alghero, Sardinia in September?
Rain falls on about 6 days, adding up to 45 mm.
Alghero, Sardinia month by month
The whole year in Alghero, SardiniaAll destinations: Italy
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)