South Bethany Weather: September
 |
Average Day Temperature: | 77.5°F |
|
Average Night Temperature: | 69.2°F |
|
Sea Water Temperature: | 76.0°F |
|
Number of Sunny Days: | 12 days |
| Sunshine Hours: | 11.8 - 13.0 hours | |
|
Number of Rainy Days: | 2 days |
| Precipitation Totals: | 1.1 in | |
| detailed information | ||
forecast
| South Bethany |
Temperature
| South Bethany |
Air Temperature in September, °F
The highest day temperature in September 2026 was 86°F. The lowest night temperature was 60°F. The average values for day and night temperatures during September were 75.2°F и 73.2°F respectivly.
South Bethany Water Sea Temperature in September, °F
The average sea surface temperature in September 2026 for South Bethany was 77.0°F. The maximum and minimum values were 67.2°F and 81.6°F respectively.
You can expect various weather conditions during September. Be ready for sunny, cloudy or even gloomy days.
Precipitation Totals in September, in
Precipitation total in September for South Bethany is 1.1 in.
The average wind speed in September is 10.5 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 7.0 hours.
South Bethany on the Weather Map
| Boston |  |
+58 |
| Chicago | |
+62 |
| Hawaii |  |
+82 |
| Houston |  |
+86 |
| Las Vegas |  |
+92 |
| Los Angeles | |
+100 |
| Maui | |
+74 |
| Miami | |
+88 |
| Myrtle Beach | |
+70 |
| New York | |
+62 |
| San Diego | |
+84 |
| San Francisco | |
+66 |
| Santa Monica | |
+94 |
| Sarasota | |
+84 |
| Washington | |
+64 |
| 2100 |  |
66°F | SE 12 mph |
| 0000 | |
66°F | S 18 mph |
| 0300 | |
62°F | S 20 mph |
| 0600 | |
60°F | S 19 mph |
| 0900 |  |
58°F | S 16 mph |
| 1200 | |
58°F | S 14 mph |
| 1500 | |
60°F | S 11 mph |
| 1800 | |
60°F | S 8 mph |