Genoa weather in September
September in Genoa: warm, a little rain, with clean air — an excellent time to visit.
#3 of 12 months in Genoa · #196 of 604 destinations to visit in September · comfort 85/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Genoa climate normals — September
| Daytime high | 25°C / 77°F | 🌤 warm |
|---|---|---|
| Nighttime low | 18°C / 64°F | |
| Feels like (high) | 27°C / 81°F | |
| Rainfall | 77 mm / 3 in | 🌦 some rain |
| Rainy days | 10 days | |
| Humidity | 77% | 💦 very humid |
| Dew point | 17°C / 62°F | |
| Sunshine | 10 h/day | |
| Daylight | 12.5 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 48 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Genoa in September — FAQ
- Is September a good time to visit Genoa?
- September in Genoa: warm, a little rain, with clean air — an excellent time to visit. It ranks #3 of 12 months for Genoa on SeasonMap's comfort score (85/100).
- What is the weather like in Genoa in September?
- In September, Genoa averages a daily high of 24.8°C and a low of 17.7°C, with about 76.7 mm of rain over roughly 10.2 rainy days.
- What is the air quality in Genoa in September?
- Genoa has a mean US Air Quality Index of about 48 in September.