Naples Weather in September 2026: what to expect (8.3/10)

The month in detail

What to expect in September

Autumn in Naples is often underrated: 27.0°C, golden light and declining crowds. An interesting window. Expect rain on 33.0% of days — a light raincoat in the bag is recommended. A good balance between weather and crowds, even if June (8.9/10) remains theoretically better.

September ranks 2 out of 12 months in Naples. Compared to August: −4°C daytime, 12 pts more rainy days, −1.7h of sun per day.

This month's conditions

What it's like in September

UV index

6 · moderate

protect during midday hours

Feels like

muggy at times

16°

Sea

25°C

pleasant for swimming

Daylight

12.3h of daylight

Air quality

good

AQI 29

Compare

Is September the right month?

The best month in Naples is June (8.9/10), 0.6 pt higher than September.

See June →See all 12 months →

Context

Our verdict

Naples is Italy's densest, most chaotic, most alive city. June is my favourite month (9.4/10): 18-27°C, 18% rain, terraces on the Lungomare, ice cream at Gelateria della Scimmia.

Read Gilles' full review →

Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

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Stay

Hotels & rentals · Naples

Expedia →

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Activities

Tours, tickets, experiences

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Flights

Multi-airline comparator

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🎟️ Activities & tours · Naples

GetYourGuide selection · free cancellation

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Affiliate link · GetYourGuide

Practical info

What you need to know before you go

Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach holiday.

Country · Italy

🗣️LanguageItalian

💶CurrencyEuro (€)

🚗DrivingRight-hand

🛡️Safety ⓘVery safe · 1/5

💰Cost of living ⓘModerate · 3/5

🌡️ Climate

🌍Climate typeTemperate oceanic

📈Climate trend ⓘ+1.42°C/decade

🔥Hottest monthAugust · 31°C

❄️Coolest monthJanuary · 13°C

🌧️Rainiest month ⓘNovember · 53%

🏖️ Beach holiday

📅Peak seasonJuin → Sept

🏖️Swell (Sept–Mar) ⓘModérée

🛂VisaSchengen · 90 days

Explore

Other destinations in September

If September doesn't convince you for this destination, compare with others.

Similar climate

Nearby

Other top picks

🗺️ See all 754 destinations on the map

Location

Where is Naples ?

Global position + regional geographic context.

🌍 World

🔍 Geographic context

Italy

Temperate oceanic climate with a 8.9 → 4.1 gap between best and worst month. 10 years of ERA5 data to choose by project.

40.85°N · 14.27°E

Questions

Frequently asked questions

What is the best time to visit Naples?

June is the best month with 27.0°C highs, 18.0°C lows, 9.3h of sunshine and 18.0% rainy days. The months of June & September offer comparable conditions.

How many hours of sunshine does Naples get in June?

Naples averages 9.3 sunshine hours per day in June. It is the sunniest month with a climate score of 8.5/10.

What is the rainiest month in Naples?

January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.

What are the temperatures at night in Naples in June?

In June, overnight lows reach 18.0°C, while afternoon highs average 27.0°C.

Is Naples good in winter?

In winter (December-February), Naples scores 4.0/10 on average — Difficult period — prefer the peak season.. The best month overall remains June with a score of 8.5/10.

When should you avoid Naples?

January is the most difficult month to visit Naples, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.

Can you swim in Naples in September?

In September, the sea averages 25°C in Naples: pleasant for swimming. Swimming is pleasant without a wetsuit.

Do you need sun protection in Naples in September?

The average UV index reaches 6 in September in Naples (moderate), with about 12.3h of daylight. Protect during midday hours.