18.09
fri
fri
Day
75°F
N 7 mph
Precip.
36%
36%
Night
77°F
E 1 mph
Precip.
16%
16%
19.09
sat
sat
Day
77°F
NE 6 mph
Precip.
7%
7%
Night
79°F
S 2 mph
Precip.
17%
17%
20.09
sun
sun
Day
79°F
NE 5 mph
Precip.
2%
2%
Night
79°F
SE 4 mph
Precip.
5%
5%
21.09
mon
mon
Day
77°F
NE 6 mph
Precip.
8%
8%
Night
77°F
E 6 mph
Precip.
6%
6%
22.09
tue
tue
Day
79°F
E 3 mph
Precip.
2%
2%
Night
73°F
SW 12 mph
Precip.
3%
3%
23.09
wed
wed
Day
75°F
SW 9 mph
Precip.
1%
1%
Night
73°F
SW 12 mph
Precip.
1%
1%
24.09
thu
thu
Day
75°F
W 10 mph
Precip.
1%
1%
Night
75°F
NE 8 mph
Precip.
2%
2%
25.09
fri
fri
Day
73°F
N 5 mph
Precip.
3%
3%
Night
73°F
SE 3 mph
Precip.
3%
3%
26.09
sat
sat
Day
73°F
N 6 mph
Precip.
15%
15%
Night
66°F
SW 16 mph
Precip.
4%
4%
27.09
sun
sun
Day
64°F
SW 13 mph
Precip.
7%
7%
Night
63°F
SW 12 mph
Precip.
3%
3%
28.09
mon
mon
Day
66°F
NW 4 mph
Precip.
9%
9%
Night
66°F
SW 10 mph
Precip.
9%
9%
29.09
tue
tue
Day
68°F
SW 7 mph
Precip.
10%
10%
Night
63°F
SW 12 mph
Precip.
32%
32%
30.09
wed
wed
Day
63°F
SW 17 mph
Precip.
87%
87%
Night
73°F
N 22 mph
Precip.
77%
77%
01.10
thu
thu
Day
73°F
N 11 mph
Precip.
70%
70%
Night
75°F
W 9 mph
Precip.
32%
32%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 83.6°F. The highest and lowest sea temperatures during the month were 85.3°F and 80.4°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 70.3°F. The highest and lowest sea temperatures during the month were 75.6°F and 68.0°F.
Air temperature in Naples, °F
Precipitation total in Naples, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Naples
Naples on a weather map
Places in Italy:
Name
°F
24 Hours Forecast
Naples
Local time: 03:14
September 18, friday
0600
75°F
NW
5 mph
5 mph
0900
75°F
NW
7 mph
7 mph
1200
75°F
N
7 mph
7 mph
1500
77°F
N
6 mph
6 mph
1800
77°F
N
5 mph
5 mph
2100
77°F
E
2 mph
2 mph
September 19, saturday
0000
77°F
E
1 mph
1 mph
0300
77°F
NE
2 mph
2 mph
