The highest day temperature in September 2025 was 82°F. The lowest night temperature was 65°F. The average values for day and night temperatures during September were 78.3°F и 71.7°F respectivly.

The average sea surface temperature in September 2025 for Santa Marinella was 79.6°F. The maximum and minimum values were 77.2°F and 81.6°F respectively.

Most of the days in September are sunny but you can also expect cloudy and gloomy days.

Precipitation total in September for Santa Marinella is 1.0 in.

The average wind speed in September is 8.4 mph.

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 Santa Marinella in September is 9.0 hours.