Naples weather in January
Temperature, sea and sunshine in January: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in January
Fair
Best time to visit: May – July, September
What is the weather like in Naples in January?
In January, Naples is cool: daytime highs average 12 °C, and nights cool down to about 6 °C. The sea averages 15.2 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 125 mm in total. All in all, January is a so-so month for a holiday in Naples.
January compared
How the weather changes from December to February. Tap a month to open it.
| DecemberDec | JanuaryJan | FebruaryFeb | |
|---|---|---|---|
| Score | 44 | 40 | 48 |
| Day | 13° | 12° | 13° |
| Night | 8° | 6° | 6° |
| Sea | 17° | 15° | 14° |
| Sun | 5 h | 5 h | 6 h |
| Rain days | 13 | 12 | 11 |
More details for January
- Daylight
- 9 h 33 min07:25 – 16:58
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 19 km/haverage daily peak
- Cloud cover
- 55 %on average
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+1Europe/Rome
How the score comes together
- Temperatureweight 50 %41 %
- Sunshineweight 20 %35 %
- Few rainy daysweight 30 %43 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in January
- A jumper for the evenings
- Rain jacket or umbrella
Naples in January: quick answers
Is Naples hot in January?
No. In January, Naples is cool: daytime highs average 12 °C and nights drop to about 6 °C.
Can you swim in Naples in January?
Only if you don't mind cold water: in January the sea averages just 15.2 °C. Comfortable swimming is possible from June to October.
Does it rain much in Naples in January?
Rain is frequent, with about 12 rainy days and 125 mm in total.
Naples month by month
The whole year in NaplesAll destinations: ItalyWhere to go in JanuarySea temperature in January
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)