Ostia Weather: September
 |
Average Day Temperature: | 82.8°F |
|
Average Night Temperature: | 72.6°F |
|
Sea Water Temperature: | 79.0°F |
|
Number of Sunny Days: | 22 days |
| Sunshine Hours: | 11.8 - 13.1 hours | |
|
Number of Rainy Days: | 4 days |
| Precipitation Totals: | 2.1 in | |
| detailed information | ||
forecast
| Ostia |
Temperature
| Ostia |
Air Temperature in September, °F
The highest day temperature in September 2025 was 84°F. The lowest night temperature was 65°F. The average values for day and night temperatures during September were 79.8°F и 72.1°F respectivly.
Ostia Water Sea Temperature in September, °F
The average sea surface temperature in September 2025 for Ostia was 79.8°F. The maximum and minimum values were 77.4°F and 81.0°F respectively.
Most of the days in September are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in September, in
Precipitation total in September for Ostia is 2.1 in.
The average wind speed in September is 8.2 mph. This value is relatively stable throughout the year.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Ostia in September is 9.9 hours.
Ostia on the Weather Map
| Amalfi |  |
+50 |
| Bari | |
+56 |
| Cagliari |  |
+52 |
| Catania |  |
+56 |
| Florence | |
+50 |
| Genoa | |
+48 |
| Naples |  |
+56 |
| Palermo | |
+54 |
| Pisa | |
+50 |
| Rimini | |
+50 |
| Rome | |
+52 |
| Scalea | |
+44 |
| Sicily | |
+50 |
| Tropea | |
+56 |
| Venice | |
+48 |
| 1200 |  |
58°F | SW 8 mph |
| 1500 | |
58°F | S 7 mph |
| 1800 |  |
56°F | S 7 mph |
| 2100 | |
54°F | S 7 mph |
| 0000 | |
52°F | S 7 mph |
| 0300 | |
50°F | S 7 mph |
| 0600 |  |
50°F | S 7 mph |
| 0900 |  |
50°F | S 7 mph |