Average sea water temperature in September:
+76.1°F
| Minimum sea water temperature in September: | 81.9°F |
| Maximum sea water temperature in September: | 71.2°F |
Daily sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 76.8°F. The highest and lowest sea temperatures during the month were 77.9°F and 74.7°F.
Monthly sea water temperature in Ostia, °F
Which Italy resorts have warmest sea in September?
| Place name | September 2025 | September 2024 |
|---|---|---|
| Lampedusa | 80.8°F | 81.5°F |
| Mondello | 80.1°F | 79.6°F |
| Lipari | 80.1°F | 79.8°F |
| Cefalu | 79.9°F | 80.0°F |
| Sirakuzy | 79.7°F | 80.1°F |
| Sicily | 79.6°F | 79.7°F |
| Catania | 79.5°F | 80.3°F |
| Palermo | 79.5°F | 79.0°F |
| Tropea | 79.4°F | 79.8°F |
| Scalea | 79.3°F | 79.6°F |
| Capo Vaticano | 79.2°F | 79.5°F |
| Giardini Naxos | 79.1°F | 80.3°F |
| Taormina | 79.1°F | 80.3°F |
| Taranto | 79.0°F | 80.0°F |
| San Vito Lo Capo | 79.0°F | 79.5°F |
| Catanzaro | 78.9°F | 80.4°F |
| Crotone | 78.7°F | 80.5°F |
| Naples | 78.6°F | 78.4°F |
| Ischia | 78.5°F | 78.2°F |
| Capri | 78.5°F | 78.3°F |
Best time for vacation in Ostia
Ostia on a weather map
Places in Italy:
Name
°F
24 Hours Forecast
Ostia
Local time: 08:08
February 25, wednesday
0900
55°F
SW
7 mph
7 mph
1200
61°F
NW
3 mph
3 mph
1500
61°F
N
6 mph
6 mph
1800
57°F
NE
3 mph
3 mph
2100
55°F
SE
2 mph
2 mph
February 26, thursday
0000
55°F
S
2 mph
2 mph
0300
52°F
S
4 mph
4 mph
0600
52°F
SW
4 mph
4 mph
