Click on a day for an hourly weather forecast
The weather in Naples in September is very hot. The average temperatures are between 26°C and 31°C, drinking water regularly is advisable.
There’s going to be many days of rain during the month of September in Naples.
Naples should expect an average of 15 to 22 days of rain, so be sure to bring along a waterproof jacket to stay dry this month!
Our weather forecast can give you a great sense of what weather to expect in Naples in September 2025.
If you’re planning to visit Naples in the near future, we highly recommend that you review the 14 day weather forecast for Naples before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 22° / 16° | 2 | 29 | 0 | 44 mm | Good | Naples in January |
| February | 23° / 17° | 2 | 26 | 0 | 33 mm | Perfect | Naples in February |
| March | 25° / 18° | 2 | 29 | 0 | 38 mm | Perfect | Naples in March |
| April | 27° / 21° | 3 | 27 | 0 | 46 mm | Perfect | Naples in April |
| May | 29° / 23° | 7 | 24 | 0 | 117 mm | Ok | Naples in May |
| June | 31° / 26° | 13 | 17 | 0 | 211 mm | Ok | Naples in June |
| July | 31° / 27° | 16 | 15 | 0 | 248 mm | Ok | Naples in July |
| August | 32° / 27° | 18 | 13 | 0 | 272 mm | Ok | Naples in August |
| September | 31° / 26° | 15 | 15 | 0 | 228 mm | Ok | Naples in September |
| October | 29° / 24° | 6 | 25 | 0 | 103 mm | Good | Naples in October |
| November | 26° / 20° | 2 | 28 | 0 | 49 mm | Perfect | Naples in November |
| December | 24° / 18° | 2 | 29 | 0 | 45 mm | Perfect | Naples in December |