The highest day temperature in September 2026 was 92°F. The lowest night temperature was 67°F. The average values for day and night temperatures during September were 85.4°F и 72.1°F respectivly.

The average sea surface temperature in September 2026 for Alghero was 81.2°F. The maximum and minimum values were 78.6°F and 84.2°F respectively.

Most of the days in September are sunny but you can also expect cloudy and gloomy days.

Precipitation total in September for Alghero is 1.0 in. It makes september one of the least rainy months of the year.

The average wind speed in September is 8.3 mph. It makes September one of the most windless months of the year for Alghero.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Alghero in September is 10.0 hours.