Naples or Nice: which climate?
Naples (Italy) has a hot-summer mediterranean climate, whereas Nice (France) has a warm-summer mediterranean climate, according to the Köppen-Geiger classification.
The values compared here are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme. The same method and the same period apply to Naples and to Nice.
Naples is warmer than Nice by 3.6 °C in annual average: 16.9 °C against 13.3 °C.
Naples gets more rain than Nice: 1,099 mm per year against 859 mm.
Nice has warmed by +2.3 °C between 1940 and 2025, against +1.4 °C in Naples. Nice is therefore warming faster than Naples. Both trends are statistically significant.
Naples averages 0 hot days (≥ 30 °C) and 0 frost days per year; Nice averages 1 and 11.
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
| Indicator | Naples | Nice | Difference |
|---|---|---|---|
| Mean daily temperature | 16.9 °C | 13.3 °C | -3.6 °C |
| Average daily high | 18.2 °C | 16.7 °C | -1.5 °C |
| Average daily low | 15.6 °C | 10.0 °C | -5.6 °C |
| Annual rainfall | 1,099 mm | 859 mm | -240 mm |
| Sunshine / day | 10.2 h | 10.2 h | negligible |
| Hot days (≥ 30 °C) | 0 d/yr | 1 d/yr | negligible |
| Frost days (< 0 °C) | 0 d/yr | 11 d/yr | +11 d/yr |
| Rainy days (≥ 1 mm) | 108 d/yr | 109 d/yr | negligible |
| Mean relative humidity | 76 % | 76 % | negligible |
| Average peak wind | 21.5 km/h | 11.1 km/h | -10.4 km/h |
A difference is only reported when it exceeds the resolution of the data. ERA5 is a reanalysis on a grid of about 31 km: two nearby cities often fall in the same cell, and below half a degree you are reading the grid, not the climate.