Alghero Weather in September
September in Alghero typically sees daytime highs of 26°C (79°F) and nighttime lows of 20°C (68°F). Expect some rainfall during the month. It falls within the summer season.
Rainfall in Alghero in September
Climate statistics over the past 30 years suggest around 7 days of rain, with 39 mm (1.5 in) average for the month. Rain is scarce this month and when it does fall, it tends to be light. Unlikely to disrupt plans significantly.
Temperature in Alghero in September
Alghero in September is worth a visit. The temperature is perfect, with 26°C (79°F) during the day and 20°C (68°F) at night. September is typically considered a summer month. Overall, the month follows a fairly predictable daily temperature pattern. With lows of 20°C (68°F), the nights are warm and generally comfortable.
Sunshine in Alghero in September
Enjoy a sunny month with about 247 hours of sunshine, the clear skies make Alghero even more beautiful.
Average water temperature in September
At 23°C (73°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Sardinia, check out our Alghero's climate page.
Alghero Temperature in September
Min Temperature
20°C (68°F)
Max Temperature
26°C (79°F)
Water Temperature
23°C (73°F)
Chance of Rain
23%
Precipitation
39 mm (1.5 in)
Rainy days
7 days
Humidity
72%
Sunshine
247 hours
Percentage Sunshine
65%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Alghero typically stay consistent throughout September, with daily highs averaging around 26°C (79°F). Nights are pleasant, with lows typically ranging from 15°C (59°F) to 18°C (64°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Alghero in September
Browse day-by-day weather records for Alghero spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Alghero historical weather extremes in September
According to our 49 years of weather records for Alghero, the following extremes were recorded between 1976 and 2025.
- The warmest day in September was on September 2, 2011, with a maximum of 38°C (100°F).
- The coldest September day was on September 27, 2007, with a maximum of 18°C (64°F).
- The lowest overnight temperature recorded in September was 6°C (43°F) (September 4, 2014).
Best Places in Sardinia in September
Find out more about the weather in Sardinia and which places have the best travel conditions in this month. See all of Sardinia in September →
perfect weather
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tolerable
unpleasant
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What to Wear in Alghero in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Pack a light rain jacket or compact umbrella for occasional showers. The water temperature sits at about 23°C (73°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Alghero in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Sardinia, check out our Alghero's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Alghero climate overview or explore weather in Sardinia.
