SeasonMapAlghero weather in September
Italy
September in Alghero: hot, a little rain, with clean air — an excellent time to visit.
#4 of 12 months in Alghero · #241 of 1383 destinations to visit in September · comfort 89/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Alghero in September
Other months in Alghero
Alghero's forum calls late July hot and reliably sunny, nudging into the 30s°C with wall-to-wall sun — regulars say you'd be genuinely unlucky to see any rain or even much cloud. Typical Mediterranean pattern here: scorching summers, with any real rain not showing up again until November or December.
Add your own note from Alghero's card on the map.
Alghero climate normals — September
| Daytime high | 28°C / 83°F | 🥵 hot |
|---|---|---|
| Nighttime low | 17°C / 62°F | |
| Feels like (high) | 30°C / 86°F | |
| Sea temperature | 24°C / 75°F | 🙂 pleasant |
| Rainfall | 59 mm / 2.3 in | 🌦 some rain |
| Rainy days | 6 days | |
| Humidity | 72% | 💧 humid |
| Dew point | 17°C / 62°F | |
| Sunshine | 10.6 h/day | |
| Daylight | 12.5 h | |
| Wind | 19 km/h / 12 mph | |
| Air quality (US AQI) | 48 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Alghero in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusySummer holidays in Italy, school holidays in 2 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Alghero's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherAlghero's weather peaks June–August, best around July.
Best weatherFair weatherToughest weather
What's on in Alghero in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Hazard
Sardinian fire season
1 Jun – 15 OctSmoke seasonThe regional fire campaign runs all summer and the worst days are the ones when the maestrale is up. Scrub roads and some coastal paths shut at short notice. Source ↗
- Season
Sea warm enough to swim
20 Jun – 5 Oct · usuallyThe bay holds its heat into early October, and the beaches north towards Fertilia are usable a fortnight after the Italian season has officially ended.
- Nature
Vermentino harvest
20 Aug – 5 Oct · usuallyThe vineyards on the plain behind the town bring in vermentino and cannonau from late August, and the cellars at Santa Maria La Palma open for it.
Nearby, and something's on
Within 300 km of Alghero — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Alghero?
Alghero in September — FAQ
- Is September a good time to visit Alghero?
- September in Alghero: hot, a little rain, with clean air — an excellent time to visit. It ranks #4 of 12 months for Alghero on SeasonMap's comfort score (89/100).
- What is the weather like in Alghero in September?
- In September, Alghero averages a daily high of 28.4°C and a low of 16.6°C, with about 58.9 mm of rain over roughly 5.9 rainy days.
- What is the air quality in Alghero in September?
- Alghero has a mean US Air Quality Index of about 48 in September.
Other months in Alghero
Compare Alghero in September
Warmer or cooler than Alghero in September
Similar destinations in Southern Europe — September
Within 300 km: Bonifacio's Lavezzi boat season around 15 Apr – 31 Oct, and Ajaccio's Sea warm enough to swim around 15 Jun – 10 Oct.