17.05
sun
sun
Day
63°F
N 8 mph
Precip.
0%
0%
Night
59°F
SE 5 mph
Precip.
0%
0%
18.05
mon
mon
Day
64°F
NE 7 mph
Precip.
0%
0%
Night
59°F
S 4 mph
Precip.
0%
0%
19.05
tue
tue
Day
66°F
NE 6 mph
Precip.
0%
0%
Night
63°F
S 5 mph
Precip.
0%
0%
20.05
wed
wed
Day
68°F
E 9 mph
Precip.
0%
0%
Night
63°F
SE 7 mph
Precip.
0%
0%
21.05
thu
thu
Day
72°F
NE 3 mph
Precip.
0%
0%
Night
64°F
SW 7 mph
Precip.
0%
0%
22.05
fri
fri
Day
75°F
NW 6 mph
Precip.
0%
0%
Night
66°F
W 7 mph
Precip.
0%
0%
23.05
sat
sat
Day
75°F
SE 6 mph
Precip.
0%
0%
Night
66°F
NE 6 mph
Precip.
0%
0%
24.05
sun
sun
Day
72°F
NE 6 mph
Precip.
0%
0%
Night
66°F
SW 2 mph
Precip.
100%
100%
25.05
mon
mon
Day
70°F
N 11 mph
Precip.
0%
0%
Night
64°F
SW 5 mph
Precip.
57%
57%
26.05
tue
tue
Day
73°F
SE 7 mph
Precip.
0%
0%
Night
64°F
NE 5 mph
Precip.
100%
100%
27.05
wed
wed
Day
72°F
E 7 mph
Precip.
0%
0%
Night
66°F
SE 6 mph
Precip.
0%
0%
28.05
thu
thu
Day
72°F
E 6 mph
Precip.
0%
0%
Night
66°F
SE 4 mph
Precip.
24%
24%
29.05
fri
fri
Day
73°F
E 5 mph
Precip.
0%
0%
Night
66°F
S 5 mph
Precip.
0%
0%
30.05
sat
sat
Day
72°F
E 7 mph
Precip.
28%
28%
Night
70°F
SE 7 mph
Precip.
84%
84%
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 64.5°F. The highest and lowest sea temperatures during the month were 65.8°F and 63.3°F.
Air temperature in Ostia, °F
Precipitation total in Ostia, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Ostia
Ostia on a weather map
Places in Italy:
Name
°F
24 Hours Forecast
Ostia
Local time: 03:09
May 17, sunday
0600
52°F
SW
9 mph
9 mph
0900
59°F
NW
4 mph
4 mph
1200
63°F
N
8 mph
8 mph
1500
64°F
NE
8 mph
8 mph
1800
64°F
E
6 mph
6 mph
2100
61°F
E
4 mph
4 mph
May 18, monday
0000
59°F
SE
5 mph
5 mph
0300
55°F
S
3 mph
3 mph
