Weather in Cagliari in August 2025
- August is usually the hottest month of the year in Cagliari;
Average weather
Average temperature in Cagliari in August
The temperature in August is +30°C on average, with a range between a maximum of +35°C during the day and a minimum of +18°C at night.
The average maximum temperature goes down 24% by the end of the month, compared with the beginning of the month, from +33°C to +29°C.
Is Cagliari warm or cold in August?
Cagliari is typically warm in August.
Maximum temperatures go up compared to the previous month from +30°C to +30°C. The minimum temperature also goes up from +21°C to +21°C.
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 +23°C to +27°C, with an average of +25°C. The air temperature averaging +30°C is higher than the water temperature.
The water temperature in August is one of the warmest of the entire year:
Can you swim in Cagliari in August?
Climate in Cagliari in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +30°C | +30°C | +27°C | ||||
| Min. temperature | ||||||
| +12°C | +13°C | +11°C | ||||
| Max. temperature | ||||||
| +42°C | +40°C | +36°C | ||||
| Rainfall | ||||||
| 1 mm | 6 mm | 25 mm | ||||
| Wind | ||||||
| 4 m/s | 3 m/s | 3 m/s | ||||
| Avg. water temperature | ||||||
| +24°C | +25°C | +24°C | ||||
| Humidity | ||||||
| 64% | 66% | 72% | ||||
| Air pressure | ||||||
| 1014 HPa | 1013 HPa | 1014 HPa | ||||
| Sunny days | ||||||
| 26 | 25 | 16 | ||||
| Cloudy days | ||||||
| 2 | 3 | 4 | ||||
| Rainy days | ||||||
| 1 | 1 | 4 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August weather is still as great as in July. The temperature levels stay the same in the area of +30°C 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
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
How was the weather last August in Cagliari?
Climate Change over Years
The climate in Cagliari in August has not changed much over the last 43 years.
The average temperature was the lowest in 1984 (+19°C) and the highest in 2022 (+24°C). The driest year was 1989 with only 134 mm of rainfall, and the wettest year was 2020 with 1145 mm.
FAQ
Is August a good time to visit Cagliari?
Can you sunbathe in Cagliari in August?
Can you swim in Cagliari in August?
Is Cagliari rainy in August?
Is it sunny in Cagliari in August?
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.