Current Sea Water Temperature:
+84.6°F
| Maximum Sea Water Temperature in September: | 87.2°F |
| Minimum Sea Water Temperature in September: | 73.6°F |
| Average water temperature in September: | 79.1°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| September 11 | 84.6°F | September 06 | 84.0°F |
| September 10 | 85.0°F | September 05 | 84.2°F |
| September 09 | 85.2°F | September 04 | 85.0°F |
| September 08 | 84.8°F | September 03 | 85.0°F |
| September 07 | 84.4°F | September 02 | 86.2°F |
When is the Warmest Sea for Ostia?
According to our data for the last three years for Ostia the highest average sea water temperature was in August, July and September.
Average Water Temperature by Month, °F
Sea Water Temperature in August
The average sea surface temperature in August 2026 for Ostia was 87.9°F. The maximum and minimum values were 86.8°F and 89.2°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2026 for Ostia was 85.1°F. The maximum and minimum values were 79.4°F and 89.0°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2025 for Ostia was 79.8°F. The maximum and minimum values were 77.4°F and 81.0°F respectively.
Italy Resorts:
NAME
F°
| Baia Domizia |  |
+78 |
| Bari |  |
+82 |
| Bibione | |
+58 |
| Florence | |
+68 |
| Genoa | |
+62 |
| Lido di Jesolo | |
+64 |
| Naples | |
+80 |
| Ostia |  |
+78 |
| Palermo | |
+74 |
| Rimini | |
+68 |
| Rome | |
+72 |
| Scalea |  |
+70 |
| Sicily | |
+78 |
| Tropea | |
+78 |
| Venice | |
+64 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Ostia
Local time: 03:17
12 sep, saturday
| 0600 |  |
78°F | E 4 mph |
| 0900 |  |
78°F | SW 4 mph |
| 1200 | |
80°F | NE 6 mph |
| 1500 | |
84°F | N 9 mph |
| 1800 | |
82°F | NE 4 mph |
| 2100 | |
80°F | SE 8 mph |
13 sep, sunday
| 0000 | |
80°F | SE 4 mph |
| 0300 | |
76°F | SW 7 mph |