Average sea water temperature in September:
+76.3°F
| Minimum sea water temperature in September: | 83.5°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 2026 | September 2025 |
|---|---|---|
| Cefalu | 84.9°F | 79.9°F |
| Sicily | 84.8°F | 79.6°F |
| Mondello | 84.2°F | 80.1°F |
| Scalea | 84.2°F | 79.3°F |
| Ischia | 84.2°F | 78.5°F |
| Naples | 84.1°F | 78.6°F |
| Capri | 84.1°F | 78.5°F |
| Marina di Zambrone | 84.1°F | 79.3°F |
| Tropea | 84.1°F | 79.4°F |
| Taranto | 84.0°F | 79.0°F |
| Sorrento | 83.9°F | 78.3°F |
| San Vito Lo Capo | 83.9°F | 79.0°F |
| Capo Vaticano | 83.9°F | 79.2°F |
| Santa Maria al Bagno | 83.8°F | 78.3°F |
| Sirakuzy | 83.8°F | 79.7°F |
| Catania | 83.8°F | 79.5°F |
| Gallipoli | 83.7°F | 78.3°F |
| Santa Maria di Leuca | 83.7°F | 78.2°F |
| Pizzo | 83.7°F | 79.0°F |
| Vibo Marina | 83.6°F | 79.1°F |
Best time for vacation in Ostia
Ostia on a weather map
Places in Italy:
Name
°F
24 Hours Forecast
Ostia
Local time: 23:08
September 15, tuesday
0000
77°F
S
7 mph
7 mph
0300
73°F
SW
7 mph
7 mph
0600
72°F
SW
9 mph
9 mph
0900
73°F
SW
7 mph
7 mph
1200
79°F
N
4 mph
4 mph
1500
79°F
NE
8 mph
8 mph
1800
79°F
E
11 mph
11 mph
2100
77°F
SE
10 mph
10 mph
