Dewey Beach Weather: September
 |
Average Day Temperature: | 76.4°F |
|
Average Night Temperature: | 70.7°F |
|
Sea Water Temperature: | 75.8°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 | ||
14 day weather
forecast
forecast
| Dewey Beach |
Sea Water
Temperature
Temperature
| Dewey Beach |
Air Temperature in September, °F
The highest day temperature in September 2026 was 87°F. The lowest night temperature was 60°F. The average values for day and night temperatures during September were 75.4°F и 72.9°F respectivly.
Dewey Beach Water Sea Temperature in September, °F
The average sea surface temperature in September 2026 for Dewey Beach was 76.9°F. The maximum and minimum values were 68.0°F and 82.0°F respectively.
Sunny, Cloudy and Gloomy days
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 Dewey Beach is 1.1 in.
Wind Speed in September, mph
The average wind speed in September is 11.7 mph.
Average Sunny Hours Per Day
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 Dewey Beach in September is 6.9 hours.
Dewey Beach on the Weather Map
USA Resorts:
NAME
F°
| Boston |  |
+58 |
| Chicago | |
+60 |
| Hawaii |  |
+82 |
| Houston |  |
+84 |
| Las Vegas |  |
+92 |
| Los Angeles | |
+102 |
| Maui |  |
+74 |
| Miami | |
+88 |
| Myrtle Beach | |
+70 |
| New York | |
+62 |
| San Diego | |
+84 |
| San Francisco | |
+66 |
| Santa Monica | |
+94 |
| Sarasota | |
+84 |
| Washington | |
+64 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Dewey Beach
Local time: 20:55
05 oct, monday
| 2100 |  |
68°F | SE 16 mph |
06 oct, tuesday
| 0000 | |
64°F | S 22 mph |
| 0300 | |
62°F | S 19 mph |
| 0600 | |
58°F | S 19 mph |
| 0900 |  |
56°F | S 17 mph |
| 1200 | |
56°F | S 13 mph |
| 1500 | |
58°F | SE 11 mph |
| 1800 | |
62°F | S 8 mph |