The highest day temperature in September 2023 was 85°F. The lowest night temperature was 72°F. The average values for day and night temperatures during September were 78.7°F и 79.1°F respectivly.

The average sea surface temperature in September 2023 for Stromboli was 80.9°F. The maximum and minimum values were 78.4°F and 82.8°F respectively.

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

Precipitation total in September for Stromboli is 0.4 in.

The average wind speed in September is 7.3 mph. It makes September one of the most windless months of the year for Stromboli.

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 Stromboli in September is 9.0 hours.