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Cagliari in August: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Cagliari in August will be like? Take a look at our weather guide for Cagliari, based on historical data.
Check flight prices to Cagliari on Avionero:
August

Weather in Cagliari in August 2025

Great Weather
Warm
☀️
Sunny
🌊
Comfortable water
August is an ideal time to visit Cagliari if you're seeking a destination with brilliant weather. Anticipate average maximum temperatures of +86°F and about 25 sunny days, ensuring you'll have ample opportunities to soak up the sunshine. It's worth noting, though, that there may be some rainfall, with approximately 6 mm of precipitation over an average of 1 rainy days. So, prepare your sunglasses, a beach towel, and great walking shoes, as it's most likely going to be amazing weather. Search flights in one click on Avionero.
Good to know:
  • August is usually the hottest month of the year in Cagliari;

Average weather

☀️
+86°F
Avg. max. temperature
+55°F
Min.
+104°F
Max.
6 mm
Total precipitation
66%
Avg. humidity
3 m/s
Avg. wind
25 ☀️
Sunny Days
3 ⛅️
Cloudy
1 🌦
Rainy
Our opinion: Cagliari has great weather in August.

Average temperature in Cagliari in August

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

Going from a maximum of +95°F during the day to a minimum of +64°F during the night, the temperature in August averages around +86°F.

The average maximum temperature goes down 24% by the end of the month, compared with the beginning of the month, from +91°F to +84°F.

Is Cagliari warm or cold in August?

Cagliari is typically warm in August.

Maximum temperatures go up compared to the previous month from +86°F to +86°F. The minimum temperature also goes up from +70°F to +70°F.

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

August is the hottest month in Cagliari, here is the comparison with other months:

Water temperature in Cagliari in August

Water in Cagliari in August is Comfortable. It varies from +73°F to +81°F, with an average of +77°F. The air temperature averaging +86°F is higher than the water temperature.

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

The warmest water temperatures in Cagliari are reached in August, when the average sea temperature rises to +77°F. The coldest water temperatures are in February, with an average of +56°F.

Can you swim in Cagliari in August?

The water in Cagliari in August is pretty comfortable (+77°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 Cagliari in August

Cagliari weather looks like this, on average, in August and the surrounding months.
JulyAugustSeptember
Avg. temperature
+86°F+86°F+81°F
Min. temperature
+54°F+55°F+52°F
Max. temperature
+108°F+104°F+97°F
Rainfall
1 mm6 mm25 mm
Wind
4 m/s3 m/s3 m/s
Avg. water temperature
+76°F+77°F+75°F
Humidity
64%66%72%
Air pressure
1014 HPa1013 HPa1014 HPa
Sunny days
262516
Cloudy days
234
Rainy days
114
Snowy days
000

August weather is still as great as in July. The temperature levels stay the same in the area of +86°F for average maximum temperature during the day. Prepare for more rain. Average rainfall goes from 1 mm to 6 mm. Humidity rises from 64% to 66%. Winds are calmer in comparison to July, going down from 4 m/s to 3 m/s on average. The days becoming less sunny, going from 26 sunny days in July to 25 in August.

September brings much the same weather, it remains great.

Wind

Wind speed in Cagliari in August based on historical data.
Last Year
Historical Data

The average wind speed is 4 m/s getting up to 10 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Cagliari is gradually decreasing during August, going from 6 m/s to 4 m/s over the course of the month.

Rain

Amount of rainfall in mm during August in Cagliari based on historical data.
Last Year
Historical Data
Typically, there is a 3% chance of rain on an average day in August, with total rainfall of approximately 6 mm. The maximum amount of rainfall per day is around 6 mm, which is considered light rain. Cagliari is amazing in August with as little as 1 rainy days on average, so plan adventures in the great outdoors.
Here’s how August is compared with other months in the amount of precipitation, total mm:
Cagliari wettest month is November, where a typical day has a 33% chance of precipitation and 57 mm of rainfall per day. July, on the other hand, is the driest month with a mere 3% chance of precipitation and 1 mm of rainfall per day.

How was the weather last August in Cagliari?

This is the weather in Cagliari in August 2023:
1 August
☀️
+91°F
2 August
☀️
+94°F
3 August
☀️
+89°F
4 August
☀️
+84°F
5 August
☀️
+79°F
6 August
☀️
+83°F
7 August
☀️
+81°F
8 August
☀️
+81°F
9 August
☀️
+87°F
10 August
☀️
+88°F
11 August
☀️
+84°F
12 August
☀️
+85°F
13 August
☀️
+88°F
14 August
☀️
+85°F
15 August
☀️
+85°F
16 August
☀️
+86°F
17 August
☀️
+88°F
18 August
☀️
+87°F
19 August
☀️
+86°F
20 August
☀️
+93°F
21 August
☀️
+90°F
22 August
☀️
+96°F
23 August
☀️
+92°F
24 August
☀️
+90°F
25 August
☀️
+93°F
26 August
☀️
+93°F
27 August
☀️
+89°F
28 August
🌧️
+79°F
29 August
☀️
+80°F
30 August
☀️
+82°F
31 August
☀️
+84°F
In August 2023 Cagliari had 30 sunny days, 0 cloudy days, and 1 rainy days. The average maximum temperature was +86°F, with an absolute maximum of +95°F and a minimum of +79°F. The average humidity was 64%, with a maximum of 93% and a minimum of 33%. The average wind speed was 4 m/s, with a maximum of 14 m/s and a minimum of 0 m/s.
Are you planning a trip in August?

Climate Change Over the Years

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

The climate in Cagliari in August has not changed that much over the last 43 years.

The average temperature was the lowest in 1984 (+66°F) and the highest in 2022 (+74°F). The driest year was 1989 with only 134 mm of rainfall, and the wettest year was 2020 with 1145 mm.

FAQ

Frequently asked questions about the weather in Cagliari in August:

Is August a good time to visit Cagliari?

Yes, August is a great time to go to Cagliari, 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 Cagliari.

Can you sunbathe in Cagliari in August?

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

Can you swim in Cagliari in August?

Yes, the water temperature in Cagliari in August is considered moderate and enjoyable for most people, averaging around +77°F.

Is Cagliari rainy in August?

Cagliari is usually dry in August. Plan your packing around outdoor activities and exploring.

Is it sunny in Cagliari in August?

Yes, Cagliari is sunny in August. Prepare for lots of rays. Don’t forget to pack your sunglasses and sunscreen, and maybe pick up a wide-brimmed hat when you arrive.

Other cities in Italy

Check out the weather for other cities in Italy.

Monthly weather in Cagliari

Source of the data

For this page, we’ve looked at the typical weather in Cagliari, 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.