21.09
mon
mon
Day
77°F
NE 6 mph
Precip.
15%
15%
Night
73°F
SE 9 mph
Precip.
6%
6%
22.09
tue
tue
Day
75°F
N 7 mph
Precip.
21%
21%
Night
72°F
W 13 mph
Precip.
14%
14%
23.09
wed
wed
Day
72°F
NW 4 mph
Precip.
4%
4%
Night
70°F
S 6 mph
Precip.
4%
4%
24.09
thu
thu
Day
72°F
W 11 mph
Precip.
12%
12%
Night
72°F
SW 6 mph
Precip.
39%
39%
25.09
fri
fri
Day
75°F
NW 6 mph
Precip.
3%
3%
Night
66°F
SE 9 mph
Precip.
69%
69%
26.09
sat
sat
Day
68°F
E 4 mph
Precip.
6%
6%
Night
70°F
SW 4 mph
Precip.
6%
6%
27.09
sun
sun
Day
72°F
N 4 mph
Precip.
5%
5%
Night
70°F
SW 5 mph
Precip.
6%
6%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 82.0°F. The highest and lowest sea temperatures during the month were 84.6°F and 79.0°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 71.4°F. The highest and lowest sea temperatures during the month were 75.9°F and 68.4°F.
Air temperature in Formia, °F
Precipitation total in Formia, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Formia
Formia on a weather map
Places in Italy:
Name
°F
24 Hours Forecast
Formia
Local time: 21:52
September 22, tuesday
0000
73°F
SE
9 mph
9 mph
0300
72°F
S
3 mph
3 mph
0600
72°F
W
4 mph
4 mph
0900
73°F
W
3 mph
3 mph
1200
75°F
N
7 mph
7 mph
1500
77°F
NE
5 mph
5 mph
1800
77°F
N
3 mph
3 mph
2100
72°F
W
11 mph
11 mph
