Naples in September
San Gennaro and warm sea
By Daan · Last reviewed October 2026
The short answer
September is the best month to visit Naples.
September keeps the summer sea, and the Feast of San Gennaro on September 19 is the city's big day.
September in detail
What September actually feels like
- Weather
- 18–27°C
- Warm, around 27°C, with the first storms.
- Crowds
- Moderate-High
- Busy early, calmer later.
- Prices
- €€€
- Rates ease after mid-month.
+Warm sea and festival day.
–Busy early in the month.
My tip for September
Go to the Duomo early on September 19.
- San Gennaro
- Swimming
How September compares
Against the other eleven months
1st of 12 overall in Naples, 2nd for weather, 7th for space, 7th for value. The emptiest month is January; the best value is January.
See all twelve months for NaplesPlan around
What’s on in Naples in September
- Day trip crowds
- Pompeii and Capri are busiest late morning. Go at opening time.
April–October
Also good in September
Weather
Weather in Naples in September
In September Naples averages a high of 27°C (81°F) and a low of 18°C (64°F), with about 89 mm of rain or snow over 6 wet days. The warmest month is August (around 31°C) and the coolest is January (around 13°C); the wettest month is November.
- Average high
- 27°C
- 81°F
- Average low
- 18°C
- 64°F
- Precipitation
- 89 mm
- Wet days
- 6
Climate data: ISPRA (Naples Capodichino Airport, 1991–2020). Temperatures are averages of daily highs and lows.
Quick answers
Naples in September: the questions people ask
- Is September a good time to visit Naples?
- September is the best month to visit Naples. It ranks 1 of 12 months in Naples overall (2 for weather, 7 for space, 7 for value). The main upside: Warm sea and festival day. The main downside: Busy early in the month.
- What is the weather like in Naples in September?
- Average highs are around 27°C and lows around 18°C. Expect about 89 mm of rain or snow over roughly 6 wet days. Warm, around 27°C, with the first storms. For comparison, the warmest month is August (around 31°C) and the coolest is January (around 13°C).
- Is Naples crowded in September?
- Crowds are moderate-high. Busy early, calmer later. The quietest month is January.
- How expensive is Naples in September?
- Prices are at level 3 of 5 (€€€). Rates ease after mid-month. The best-value month is January.
- When is the best time to visit Naples?
- In the CrowdFreeViews month scores, May is the best month overall (this month). The quietest month is January and the best value is January.