Dewey Beach Weather: September
 |
Average Day Temperature: | 76.6°F |
|
Average Night Temperature: | 70.4°F |
|
Sea Water Temperature: | 75.7°F |
|
Number of Sunny Days: | 13 days |
| Sunshine Hours: | 11.8 - 13.0 hours | |
|
Number of Rainy Days: | 2 days |
| Precipitation Totals: | 1.2 in | |
| detailed information | ||
14 day weather
forecast
forecast
| Dewey Beach |
Sea Water
Temperature
Temperature
| Dewey Beach |
Air Temperature in September, °F
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
14
28
42
56
70
84
98
112
| Day Temperature | Night Temperature |
The highest day temperature in September 2024 was 83°F. The lowest night temperature was 62°F. The average values for day and night temperatures during September were 74.6°F и 70.0°F respectivly.
Dewey Beach Water Sea Temperature in September, °F
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
66
69
72
75
78
81
84
The average sea surface temperature in September 2024 for Dewey Beach was 74.0°F. The maximum and minimum values were 71.8°F and 76.8°F respectively.
Sunny, Cloudy and Gloomy days
| Sunny days | |
| Cloudy days | |
| Gloomy days |
43%
27%
30%
Most of the days in September are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in September, in
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
0.3
0.7
1.0
1.4
1.7
2.0
2.4
Precipitation total in September for Dewey Beach is 1.2 in.
Wind Speed in September, mph
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
2.3
4.6
6.9
9.1
11.4
13.7
16.0
The average wind speed in September is 11.1 mph.
Average Sunny Hours Per Day
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
1.6
3.2
4.8
6.3
7.9
9.5
11.1
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 7.3 hours.
Dewey Beach on the Weather Map
USA Resorts:
NAME
F°
| Boston |  |
+48 |
| Chicago |  |
+56 |
| Hawaii |  |
+76 |
| Honolulu | |
+76 |
| Houston | |
+72 |
| Las Vegas |  |
+50 |
| Los Angeles | |
+52 |
| Miami | |
+76 |
| New York |  |
+54 |
| Orlando | |
+74 |
| San Diego | |
+58 |
| San Francisco | |
+52 |
| Sarasota | |
+72 |
| Tampa | |
+72 |
| Washington | |
+56 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Dewey Beach
Local time: 07:48
18 apr, friday
| 0900 |  |
54°F | N 12 mph |
| 1200 |  |
64°F | N 17 mph |
| 1500 |  |
62°F | N 20 mph |
| 1800 | |
62°F | N 19 mph |
| 2100 |  |
58°F | N 20 mph |
19 apr, saturday
| 0000 |  |
60°F | NE 19 mph |
| 0300 | |
60°F | NE 21 mph |
| 0600 | |
60°F | NE 21 mph |