Naples weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Fair
Best time to visit: May – July, September
What is the weather like in Naples in December?
In December, Naples is cool: daytime highs average 13 °C, and nights cool down to about 8 °C. The sea averages 17.0 °C – bracing, so a wetsuit helps for longer swims. Expect around 5 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 146 mm in total. All in all, December is a so-so month for a holiday in Naples.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 61 | 45 | 41 |
| Day | 17° | 13° | 12° |
| Night | 11° | 8° | 6° |
| Sea | 20° | 17° | 15° |
| Sun | 5 h | 5 h | 5 h |
| Rain days | 14 | 13 | 12 |
More details for December
- Daylight
- 9 h 16 min07:20 – 16:36
- UV index
- 1 · lowclear sky, noon (estimate)
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 19 km/haverage daily peak
- Cloud cover
- 53 %on average
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+1Europe/Rome
How the score comes together
- Temperatureweight 50 %52 %
- Sunshineweight 20 %38 %
- Few rainy daysweight 30 %39 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in December
- A jumper for the evenings
- Rain jacket or umbrella
Naples in December: quick answers
Is Naples hot in December?
No. In December, Naples is cool: daytime highs average 13 °C and nights drop to about 8 °C.
Can you swim in Naples in December?
Only if you don't mind cold water: in December the sea averages just 17.0 °C. Comfortable swimming is possible from June to October.
Does it rain much in Naples in December?
Rain is frequent, with about 13 rainy days and 146 mm in total.
Naples month by month
The whole year in NaplesAll destinations: Italy
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)