World Resorts Italy Ostia Weather

Ostia Sea Temperature in December

Average sea water temperature in December:
+62.1°F
Minimum sea water temperature in December: 65.3°F
Maximum sea water temperature in December: 59.0°F

Daily sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 62.1°F. The highest and lowest sea temperatures during the month were 63.3°F and 60.6°F.

Monthly sea water temperature in Ostia, °F

Which Italy resorts have warmest sea in December?

Place name December 2025 December 2024
Lampedusa 66.2°F 67.2°F
Capo Vaticano 64.5°F 65.1°F
Tropea 64.4°F 65.1°F
Sirakuzy 64.2°F 64.7°F
Capri 64.0°F 65.0°F
Scalea 63.9°F 64.9°F
Maiori 63.8°F 64.6°F
Amalfi 63.8°F 64.6°F
Positano 63.8°F 64.8°F
Ischia 63.8°F 64.8°F
Sorrento 63.7°F 64.8°F
Pizzo 63.7°F 64.6°F
Catania 63.6°F 64.4°F
Marina di Ragusa 63.6°F 64.5°F
Taormina 63.5°F 64.3°F
Cefalu 63.5°F 64.5°F
Letojanni 63.5°F 64.3°F
Giardini Naxos 63.5°F 64.3°F
Paestum 63.5°F 64.5°F
Messina 63.4°F 64.0°F

Best time for vacation in Ostia

Sunniest months:
July 29 days
August 28 days
June 26 days
Warmest months:
August 86.2 °F
July 85.5 °F
June 79.8 °F
Warmest sea temp:
August 79.1 °F
July 77.9 °F
September 76.1 °F
Coldest months:
January 54.7 °F
February 55.8 °F
December 57.3 °F
Rainiest months:
November 6 days
March 5 days
December 4 days
Windiest months:
February 9.8 mph
November 9.7 mph
January 9.7 mph

Ostia on a weather map

Ostia
+54°F
NW 15 mph
Feels like: +50°F
Precip.: 70%
Places in Italy:
Name
°F
+50°F
+52°F
+39°F
+46°F
+57°F
+54°F
+52°F
+55°F
+50°F
+52°F
+46°F
+52°F
+43°F
+45°F
24 Hours Forecast
Ostia
Local time: 11:14
January 13, tuesday
1200
54°F
NW
15 mph
1500
54°F
NW
15 mph
1800
52°F
NW
12 mph
2100
52°F
NW
11 mph
January 14, wednesday
0000
52°F
NW
10 mph
0300
52°F
NW
8 mph
0600
52°F
NW
8 mph
0900
54°F
NW
8 mph
Units of measurement: °C / °F