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
Lipari 64.8°F 64.5°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
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
Catania 63.6°F 64.4°F
Cefalu 63.5°F 64.5°F
Taormina 63.5°F 64.3°F
Paestum 63.5°F 64.5°F
Giardini Naxos 63.5°F 64.3°F
Messina 63.4°F 64.0°F
Sicily 63.3°F 64.3°F
Naples 63.3°F 64.5°F
Salerno 63.3°F 64.1°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 55.9 °F
December 57.3 °F
Rainiest months:
November 6 days
December 4 days
January 4 days
Windiest months:
February 9.8 mph
November 9.7 mph
January 9.7 mph

Ostia on a weather map

Ostia
+63°F
E 5 mph
Feels like: +63°F
Precip.: 0%
Places in Italy:
Name
°F
+63°F
+63°F
+63°F
+59°F
+63°F
+63°F
+63°F
+61°F
+66°F
+61°F
+63°F
+57°F
+64°F
24 Hours Forecast
Ostia
Local time: 18:31
April 06, monday
2100
57°F
SE
6 mph
April 07, tuesday
0000
57°F
SE
4 mph
0300
55°F
S
4 mph
0600
54°F
SW
4 mph
0900
57°F
W
3 mph
1200
63°F
NE
6 mph
1500
63°F
NE
7 mph
1800
63°F
NE
6 mph
Units of measurement: °C / °F