17.05
sun
sun
Day
63°F
N 7 mph
Precip.
0%
0%
Night
57°F
SE 6 mph
Precip.
0%
0%
18.05
mon
mon
Day
64°F
NE 9 mph
Precip.
0%
0%
Night
57°F
S 2 mph
Precip.
0%
0%
19.05
tue
tue
Day
68°F
NE 7 mph
Precip.
0%
0%
Night
61°F
SE 9 mph
Precip.
0%
0%
20.05
wed
wed
Day
70°F
E 9 mph
Precip.
0%
0%
Night
63°F
SE 7 mph
Precip.
0%
0%
21.05
thu
thu
Day
73°F
NE 7 mph
Precip.
0%
0%
Night
63°F
W 7 mph
Precip.
0%
0%
22.05
fri
fri
Day
73°F
N 7 mph
Precip.
0%
0%
Night
64°F
W 4 mph
Precip.
0%
0%
23.05
sat
sat
Day
73°F
NE 7 mph
Precip.
0%
0%
Night
64°F
NE 3 mph
Precip.
0%
0%
24.05
sun
sun
Day
73°F
NE 7 mph
Precip.
0%
0%
Night
64°F
SE 3 mph
Precip.
0%
0%
25.05
mon
mon
Day
73°F
NE 8 mph
Precip.
0%
0%
Night
64°F
SE 7 mph
Precip.
0%
0%
26.05
tue
tue
Day
72°F
N 9 mph
Precip.
0%
0%
Night
64°F
NW 4 mph
Precip.
0%
0%
27.05
wed
wed
Day
72°F
N 11 mph
Precip.
0%
0%
Night
64°F
SW 2 mph
Precip.
100%
100%
28.05
thu
thu
Day
72°F
E 8 mph
Precip.
100%
100%
Night
64°F
NE 1 mph
Precip.
0%
0%
29.05
fri
fri
Day
73°F
N 9 mph
Precip.
0%
0%
Night
66°F
SE 5 mph
Precip.
0%
0%
30.05
sat
sat
Day
75°F
NE 7 mph
Precip.
0%
0%
Night
68°F
E 4 mph
Precip.
0%
0%
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 64.9°F. The highest and lowest sea temperatures during the month were 66.4°F and 63.7°F.
Air temperature in Nettuno, °F
Precipitation total in Nettuno, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Nettuno
Nettuno on a weather map
Places in Italy:
Name
°F
24 Hours Forecast
Nettuno
Local time: 19:59
May 17, sunday
2100
59°F
SE
6 mph
6 mph
May 18, monday
0000
57°F
SE
6 mph
6 mph
0300
57°F
SE
6 mph
6 mph
0600
57°F
SE
6 mph
6 mph
0900
63°F
E
6 mph
6 mph
1200
64°F
NE
9 mph
9 mph
1500
64°F
NE
11 mph
11 mph
1800
64°F
NE
9 mph
9 mph
