Weather in Naples in October

How October compares

October is the 6th warmest month of the year in Naples and ranks 96th of 134 destinations we compare for October - see where else is hot in October. Within Italy it is 3rd of 16 (Italy in October). Against London's average high of 14.6°C in October, Naples is 6.6°C warmer by day and 6.0°C warmer at night.

Daytime and night-time in October

The typical October day in Naples peaks at 21.2°C, but that is an average: the warmest 10% of days reach 24.4°C or more. Roughly 1 in 16 days top 25°C. Nights average 14.4°C; one night in ten drops to 10.9°C or lower, so pack a layer for evenings - it is genuinely cool after dark. Between 1991 and 2020 the hottest October day here reached 28.4°C (2000-10-14) and the coldest night 6.4°C (1997-10-29).

Rain in October

Wet (more than 8 rainy days): about 11 days with 1 mm or more, 134 mm in total. Year to year it varies a lot - the wettest October was 2015 with 283 mm, the driest 1995 with 8 mm. Humidity averages 78%.

Sea temperature in October

The sea averages 21.9°C - bracing (18-22°c). Depending on the year it ranges from 21.2°C to 22.7°C. For the warmest sea here, come in August (26.4°C).

Sunshine and daylight

Around 5.5 hours of sunshine a day (estimated from cloud cover), 10.9 hours of daylight: the sun rises about 07:14 and sets about 18:23 local time in mid-October. Average cloud cover is 50%.

Is October a good time to visit Naples?

October is not the strongest month here: warm days and frequent rain. The best months for Naples on our scoring are July, August, June; months averaging 25°C or more: Jun, Jul, Aug, Sep.

Warm afternoons without dependable summer heat

The daytime warmth suits travellers who prefer walking around without intense heat. A light top may be enough when the sun is out, with an extra layer ready for shade or later in the day. Only 6% of days reach 25°C, so October is not the month to choose if hot afternoons are essential. Warmer days can still reach 24.4°C or more, making lighter clothing useful at midday. Evenings need a different approach: the average night low is 14.4°C, while colder nights can fall to 10.9°C or below. Bring a jacket rather than relying on daytime warmth to last after dark.

Rain is the main compromise

Rain is a meaningful part of an October visit, not something to dismiss as an occasional inconvenience. About 11 days receive measurable rain, so pack a waterproof jacket and shoes you can comfortably wear on wet pavements. Keep outdoor plans movable rather than depending on every day staying dry. There is still useful sunshine: about 5.5 hours a day within 10.9 hours of daylight. That leaves scope for time outside, but does not promise clear skies throughout the day. October suits you better if you are happy to change plans around the weather; it is a weaker choice if uninterrupted sunshine is the priority.

Treat swimming as an option, not the main reason to go

The sea averages 21.9°C, which puts it on the bracing side rather than comfortably warm. If you enjoy cooler water, swimming may still appeal, especially when the air feels warm, but do not assume summer-like conditions. The October sea temperature ranges from 21°C to 23°C between years, so your tolerance for cool water matters more than the average alone. Pack swimwear if you would use it, alongside something warm to put on afterwards. For a trip centred on city time with a possible swim, that is a reasonable balance. For a holiday built around warm-water swimming, October is a less convincing fit.