World Resorts Italy Ostia Weather

Ostia sea water temperature

Current sea water temperature:
+58.8°F
Minimum sea water temperature in March: 61.2°F
Maximum sea water temperature in March: 55.4°F
Average sea water temperature in March: 57.5°F

Sea water temperature for the last 10 days:

March 16 58.8°F March 11 57.7°F
March 15 59.2°F March 10 58.6°F
March 14 59.0°F March 9 58.8°F
March 13 58.5°F March 8 58.3°F
March 12 58.8°F March 7 58.3°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.

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
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
+55°F
W 6 mph
Feels like: +55°F
Precip.: 0%
Places in Italy:
Name
°F
+52°F
+52°F
+52°F
+52°F
+57°F
+57°F
+54°F
+55°F
+57°F
+52°F
+54°F
+52°F
+55°F
24 Hours Forecast
Ostia
Local time: 08:03
March 17, tuesday
0900
55°F
W
6 mph
1200
59°F
NE
6 mph
1500
59°F
E
11 mph
1800
57°F
E
12 mph
2100
55°F
SE
6 mph
March 18, wednesday
0000
50°F
SW
11 mph
0300
52°F
NW
14 mph
0600
50°F
NW
9 mph
Units of measurement: °C / °F