The highest day temperature in September 2026 was 92°F. The lowest night temperature was 64°F. The average values for day and night temperatures during September were 83.0°F и 72.8°F respectivly.

The average sea surface temperature in September 2026 for Orbetello was 82.1°F. The maximum and minimum values were 77.6°F and 86.2°F respectively.

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

Precipitation total in September for Orbetello is 1.8 in. It makes september one of the most rainy months of the year.

The average wind speed in September is 8.9 mph. It makes September one of the most windless months of the year for Orbetello.

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 Orbetello in September is 10.0 hours.