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Alghero in September: Weather, Average temperature and Climate

Take a look at past year’s weather for Alghero in September and see if it is worth visiting.
Check flight prices to Alghero on Avionero:
September

Weather in Alghero in September 2025

Great Weather
Warm
☀️
Sunny
🌊
Comfortable water
For those searching for an ideal September holiday with excellent weather, Alghero is a perfect choice. Average maximum temperatures are +79°F. Expect about 17 sunny days, making it the perfect place to enjoy the sunshine. It's worth noting that there may be some rainfall, with an average of 32 mm of precipitation over 5 rainy days. So, take your sunglasses, a beach towel, and great walking shoes, as it looks like amazing weather. Search flights in one click on Avionero.

Average weather

☀️
+79°F
Avg. max. temperature
+48°F
Min.
+93°F
Max.
32 mm
Total precipitation
74%
Avg. humidity
3 m/s
Avg. wind
17 ☀️
Sunny Days
4 ⛅️
Cloudy
5 🌦
Rainy
Our opinion: Alghero has great weather in September.

Average temperature in Alghero in September

Here are the expected maximum, average and minimum temperatures in Alghero for September based on the historical data.
Last Year
Historical Data

The temperature in September is +81°F on average, with a range between a maximum of +91°F during the day and a minimum of +64°F at night.

The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +77°F to +77°F.

Is Alghero warm or cold in September?

Alghero is typically warm in September.

Maximum temperatures go down compared to the previous month from +84°F to +79°F. The minimum temperature also goes down from +72°F to +66°F.

It’s generally warm, but pack a long-sleeve shirt for evenings.

September is one of the warmest months in Alghero, here is the comparison with other months:

Water temperature in Alghero in September

Water in Alghero in September is Comfortable. It varies from +69°F to +79°F, with an average of +74°F. This is almost similar to the air temperature, which averages +79°F.

The water temperature in September is one of the warmest of the entire year:

The warmest water temperatures in Alghero are reached in August, when the average sea temperature rises to +75°F. The coldest water temperatures are in February, with an average of +56°F.

Can you swim in Alghero in September?

The water in Alghero in September is pretty comfortable (+74°F in average). Ideal for swimming, especially in outdoor pools and open water. Suitable for recreational and casual swimmers.
🦭
Cold
Below +61°F
🏄‍♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
Don’t forget a large beach towel or two for drying off.

Climate in Alghero in September

Alghero weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+84°F+79°F+72°F
Min. temperature
+54°F+48°F+45°F
Max. temperature
+106°F+93°F+90°F
Rainfall
8 mm32 mm63 mm
Wind
2 m/s3 m/s3 m/s
Avg. water temperature
+75°F+74°F+70°F
Humidity
71%74%77%
Air pressure
1014 HPa1015 HPa1016 HPa
Sunny days
241712
Cloudy days
346
Rainy days
359
Snowy days
000

September weather is still as great as in August. It’s getting colder in September. From +84°F in the day, the average maximum temperature lowers to +79°F. Prepare for more rain. Average rainfall goes from 8 mm to 32 mm. Humidity rises from 71% to 74%. Winds are stronger in comparison to August, going up from 2 m/s to 3 m/s on average. The days becoming less sunny, going from 24 sunny days in August to 17 in September.

Next month (October) brings a further decline in the weather.

Wind

Wind speed in Alghero in September based on historical data.
Last Year
Historical Data

The average wind speed is 2 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in Alghero is gradually increasing during September, going from 2 m/s to 2 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in Alghero based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in September stands at 10%, leading to total precipitation of around 5 mm. The maximum amount of rainfall per day is around 2 mm, which is considered light rain. Alghero is amazing in September with as little as 3 rainy days on average, so plan adventures in the great outdoors.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Alghero wettest month is November, where a typical day has a 40% chance of precipitation and 93 mm of rainfall per day. July, on the other hand, is the driest month with a mere 6% chance of precipitation and 4 mm of rainfall per day.

How was the weather last September in Alghero?

This is the weather in Alghero in September 2023:
1 September
☀️
+78°F
2 September
☁️
+84°F
3 September
☀️
+85°F
4 September
☀️
+87°F
5 September
☀️
+82°F
6 September
☀️
+81°F
7 September
☀️
+81°F
8 September
☀️
+81°F
9 September
☀️
+81°F
10 September
☀️
+82°F
11 September
☀️
+81°F
12 September
☀️
+84°F
13 September
☁️
+83°F
14 September
☀️
+79°F
15 September
☀️
+83°F
16 September
☀️
+86°F
17 September
☀️
+91°F
18 September
☀️
+86°F
19 September
☀️
+81°F
20 September
☁️
+84°F
21 September
☀️
+80°F
22 September
🌧️
+78°F
23 September
☀️
+73°F
24 September
☀️
+74°F
25 September
☀️
+75°F
26 September
☀️
+77°F
27 September
☀️
+78°F
28 September
☁️
+77°F
29 September
☀️
+78°F
30 September
☀️
+78°F
In September 2023 Alghero had 25 sunny days, 4 cloudy days, and 1 rainy days. The average maximum temperature was +81°F, with an absolute maximum of +91°F and a minimum of +73°F. The average humidity was 76%, with a maximum of 100% and a minimum of 45%. The average wind speed was 2 m/s, with a maximum of 9 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change Over the Years

This is how Alghero climate has changed over the last 43 years.

The climate in Alghero in September has not changed that much over the last 43 years.

The average temperature was the lowest in 1980 (+65°F) and the highest in 2017 (+72°F). The driest year was 2017 with only 311 mm of rainfall, and the wettest year was 2010 with 759 mm.

FAQ

Frequently asked questions about the weather in Alghero in September:

Is September a good time to visit Alghero?

Yes, September is a great time to go to Alghero, the weather couldn’t be better. Be ready to get outside, explore and enjoy. Check what other months that are a good time to visit Alghero.

Can you sunbathe in Alghero in September?

September is warm in Alghero. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Can you swim in Alghero in September?

Yes, the water temperature in Alghero in September is considered moderate and enjoyable for most people, averaging around +74°F.

Is Alghero rainy in September?

Alghero is usually dry in September. Plan your packing around outdoor activities and exploring.

Is it sunny in Alghero in September?

The amount of sunny days in Alghero during September varies; prepare for a mix of clouds and sun.

Other cities in Italy

Check out the weather for other cities in Italy.

Monthly weather in Alghero

Source of the data

For this page, we’ve looked at the typical weather in Alghero, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.