Measurements:
°C
°F
Ostia
64°F
SW 3 mph
Feels like: 64°F
Precip: 7%
World Resorts Italy Ostia Weather

Ostia Sea Water Temperature

Current Sea Water Temperature:
+69.6°F
Maximum Sea Water Temperature in November: 74.2°F
Minimum Sea Water Temperature in November: 63.8°F
Average water temperature in November: 68.7°F

Sea Water Temperature for the Last 10 Days:

November 14 69.6°F November 09 68.6°F
November 13 69.8°F November 08 69.4°F
November 12 68.6°F November 07 68.8°F
November 11 68.8°F November 06 68.8°F
November 10 68.8°F November 05 69.8°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

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Ostia was 87.9°F. The maximum and minimum values were 86.8°F and 89.2°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

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

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Ostia was 83.2°F. The maximum and minimum values were 80.4°F and 87.2°F respectively.

Best Time to Visit Ostia
The most sunny months:
July 29 days
August 28 days
June 26 days
The most warm months:
August 90.2 °F
July 89.4 °F
June 83.1 °F
Warmest sea temperature:
August 82.7 °F
July 81.2 °F
September 79.3 °F
The most cold months:
January 55.2 °F
February 56.5 °F
December 58.1 °F
The most rainy months:
November 6 days
December 4 days
January 4 days
The most windy months:
February 9 mph
November 9 mph
January 9 mph

Ostia on the Weather Map

Italy Resorts:
NAME
F°
Bari +62
Bibione +52
Catania +78
Florence +56
Genoa +52
Lido di Jesolo +50
Naples +68
Ostia +64
Palermo +74
Rimini +54
Rome +64
Scalea +64
Sicily +72
Tropea +68
Venice +50
24 Hours Weather Forecast
Ostia
Local time: 12:10
14 nov, saturday
1500 64°F
W
2 mph
1800 56°F
SW
3 mph
2100 54°F
W
4 mph
15 nov, sunday
0000 54°F
W
6 mph
0300 56°F
NW
7 mph
0600 58°F
NW
9 mph
0900 62°F
NW
7 mph
1200 64°F
NE
6 mph