Current Sea Water Temperature:
+88.0°F
| Maximum Sea Water Temperature in August: | 89.2°F |
| Minimum Sea Water Temperature in August: | 76.4°F |
| Average water temperature in August: | 82.5°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| August 22 | 88.0°F | August 17 | 88.0°F |
| August 21 | 88.2°F | August 16 | 87.0°F |
| August 20 | 88.2°F | August 15 | 87.2°F |
| August 19 | 88.0°F | August 14 | 87.2°F |
| August 18 | 87.8°F | August 13 | 87.6°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 88.0°F. The maximum and minimum values were 87.0°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 |  |
+96 |
| Bari | |
+88 |
| Bibione |  |
+80 |
| Florence |  |
+88 |
| Genoa |  |
+78 |
| Lido di Jesolo | |
+86 |
| Naples | |
+88 |
| Palermo | |
+100 |
| Rimini | |
+96 |
| Rome | |
+98 |
| Sanremo | |
+80 |
| Scalea | |
+84 |
| Sicily | |
+100 |
| Tropea | |
+84 |
| Venice | |
+86 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Ostia
Local time: 16:11
22 aug, saturday
| 1800 |  |
86°F | NE 10 mph |
| 2100 |  |
84°F | E 4 mph |
23 aug, sunday
| 0000 | |
82°F | S 4 mph |
| 0300 | |
78°F | SW 6 mph |
| 0600 | |
78°F | SW 6 mph |
| 0900 | |
82°F | SW 8 mph |
| 1200 | |
88°F | E 9 mph |
| 1500 | |
86°F | E 12 mph |