Weather in Ajaccio in September 2025
Average weather
Average temperature in Ajaccio in September
The temperature in September is +25°C on average, with a range between a maximum of +29°C during the day and a minimum of +19°C at night.
The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +23°C to +23°C.
Is Ajaccio warm or cold in September?
Ajaccio is typically warm in September.
Maximum temperatures go down compared to the previous month from +26°C to +23°C. The minimum temperature also goes down from +23°C to +20°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
September is one of the warmest months in Ajaccio, here is the comparison with other months:
Climate in Ajaccio in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +26°C | +23°C | +20°C | ||||
| Min. temperature | ||||||
| +17°C | +13°C | +9°C | ||||
| Max. temperature | ||||||
| +33°C | +29°C | +27°C | ||||
| Rainfall | ||||||
| 16 mm | 46 mm | 92 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 74% | 76% | 78% | ||||
| Air pressure | ||||||
| 1014 HPa | 1015 HPa | 1015 HPa | ||||
| Sunny days | ||||||
| 19 | 10 | 7 | ||||
| Cloudy days | ||||||
| 6 | 8 | 9 | ||||
| Rainy days | ||||||
| 6 | 10 | 14 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September typically has worse weather conditions compared to August. It’s getting colder in September. From +26°C in the day, the average maximum temperature lowers to +23°C. Prepare for more rain. Average rainfall goes from 16 mm to 46 mm. Humidity rises from 74% to 76%. The average wind speed doesn’t change much during September, staying around 2 m/s. The days becoming less sunny, going from 19 sunny days in August to 10 in September.
Next month (October) brings a further decline in the weather.
Wind
The average wind speed is 2 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Ajaccio is gradually increasing during September, going from 1 m/s to 1 m/s over the course of the month.
Rain
How was the weather last September in Ajaccio?
Climate Change over Years
The climate in Ajaccio in September has not changed much over the last 43 years.
The average temperature was the lowest in 1980 (+17°C) and the highest in 2022 (+20°C). The driest year was 2011 with only 547 mm of rainfall, and the wettest year was 2018 with 1175 mm.
FAQ
Is September a good time to visit Ajaccio?
Can you sunbathe in Ajaccio in September?
Is Ajaccio rainy in September?
Is it sunny in Ajaccio in September?
Other cities in France
Monthly weather in Ajaccio
Source of the data
For this page, we’ve looked at the typical weather in Ajaccio, 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.