Ajaccio weather in September
September in Ajaccio: warm, a little rain, with clean air — an excellent time to visit.
#4 of 12 months in Ajaccio · #271 of 897 destinations to visit in September · comfort 87/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Ajaccio in September
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Ajaccio climate normals — September
| Daytime high | 26°C / 78°F | 🌤 warm |
|---|---|---|
| Nighttime low | 20°C / 67°F | |
| Rainfall | 57 mm / 2.2 in | 🌦 some rain |
| Rainy days | 6 days | |
| Humidity | 72% | 💧 humid |
| Dew point | 17°C / 63°F | |
| Sunshine | 10.5 h/day | |
| Daylight | 12.5 h | |
| Wind | 16 km/h / 10 mph | |
| Air quality (US AQI) | 44 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Ajaccio in September — FAQ
- Is September a good time to visit Ajaccio?
- September in Ajaccio: warm, a little rain, with clean air — an excellent time to visit. It ranks #4 of 12 months for Ajaccio on SeasonMap's comfort score (87/100).
- What is the weather like in Ajaccio in September?
- In September, Ajaccio averages a daily high of 25.6°C and a low of 19.6°C, with about 57.1 mm of rain over roughly 6.4 rainy days.
- What is the air quality in Ajaccio in September?
- Ajaccio has a mean US Air Quality Index of about 44 in September.