Is Naples hot in January?
Days are typically cool at 13.1°C, while nights average 3.1°C.
Italy · 1991–2020 normal
Typical January weather in Naples: 13.1°C by day, 3.1°C at night, 99 mm of rain over 9.3 wet days. These are measured 1991–2020 station normals, not a forecast.
In the year-round weather comparison, January scores 28 out of 100 (May leads the year at 88). Daylight is calculated as 9 h 32 from latitude 40.85°. Open-water sea temperature is 15.0°C (9 km from the place centre).
January at a glance
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Days are typically cool at 13.1°C, while nights average 3.1°C.
The measured monthly average is 99 mm across about 9 wet days.
There are about 9 h 32 between sunrise and sunset at mid-month, calculated from the place latitude.
January ranks 12 of 12 in our weather comparison; May ranks first.
The evidence behind this page
Next step
The weather comparison for Naples is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
How travel partnerships will work