The highest day temperature in September 2023 was 101°F. The lowest night temperature was 58°F. The average values for day and night temperatures during September were 80.5°F и 67.6°F respectivly.

The average sea surface temperature in September 2023 for South Bethany was 76.2°F. The maximum and minimum values were 70.6°F and 80.6°F respectively.

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

Precipitation total in September for South Bethany is 1.5 in. It makes september one of the most rainy months of the year.

The average wind speed in September is 8.3 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 South Bethany in September is 7.7 hours.