Naples weather in September
September in Naples: hot, rainy — a great time to visit.
#6 of 12 months in Naples · #344 of 604 destinations to visit in September · comfort 78/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Naples climate normals — September
| Daytime high | 27°C / 80°F | 🥵 hot |
|---|---|---|
| Nighttime low | 19°C / 67°F | |
| Feels like (high) | 29°C / 84°F | |
| Rainfall | 133 mm / 5.2 in | 🌧 rainy |
| Rainy days | 8 days | |
| Humidity | 71% | 💧 humid |
| Dew point | 17°C / 62°F | |
| Sunshine | 10.4 h/day | |
| Daylight | 12.5 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 56 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Naples in September — FAQ
- Is September a good time to visit Naples?
- September in Naples: hot, rainy — a great time to visit. It ranks #6 of 12 months for Naples on SeasonMap's comfort score (78/100).
- What is the weather like in Naples in September?
- In September, Naples averages a daily high of 26.9°C and a low of 19.4°C, with about 132.6 mm of rain over roughly 8.2 rainy days.
- What is the air quality in Naples in September?
- Naples has a mean US Air Quality Index of about 56 in September.