Current sea water temperature:
+62.1°F
| Minimum sea water temperature in December: | 65.3°F |
| Maximum sea water temperature in December: | 59.0°F |
| Average sea water temperature in December: | 62.1°F |
| more information | |
14 days
forecast
forecast
| Ostia |
monthly
weather
weather
| Ostia |
Sea water temperature for the last 10 days:
| December 18 | 62.1°F | December 13 | 62.1°F |
| December 17 | 62.2°F | December 12 | 62.4°F |
| December 16 | 61.7°F | December 11 | 62.2°F |
| December 15 | 61.9°F | December 10 | 62.1°F |
| December 14 | 61.7°F | December 9 | 62.6°F |
Monthly sea water temperature, °F
When is the warmest sea in Ostia?
Based on the data about daily sea water temperature for the last three years the warmest sea in Ostia was noticed in August, July and September.
Monthly Sea Temperatures in Ostia, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 77.9°F. The highest and lowest sea temperatures during the month were 80.2°F and 73.8°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 78.7°F. The highest and lowest sea temperatures during the month were 83.1°F and 74.5°F.
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.
current
weather
weather
| Ostia |
weather in
December
December
| Ostia |
Best time for vacation in Ostia
Ostia on a weather map
Places in Italy:
Name
°F
24 Hours Forecast
Ostia
Local time: 02:59
December 19, friday
0300
57°F
W
6 mph
6 mph
0600
55°F
W
6 mph
6 mph
0900
57°F
W
4 mph
4 mph
1200
61°F
W
2 mph
2 mph
1500
63°F
N
1 mph
1 mph
1800
59°F
S
4 mph
4 mph
2100
57°F
S
4 mph
4 mph
December 20, saturday
0000
55°F
SW
7 mph
7 mph
