World Resorts USA Dewey Beach Weather

Dewey Beach 14 Days Forecast

09.09
wed
Day
79°F
N 12 mph
Precip.
15%
Night
75°F
NE 24 mph
Precip.
8%
10.09
thu
Day
81°F
E 11 mph
Precip.
15%
Night
77°F
SE 7 mph
Precip.
72%
11.09
fri
Day
75°F
SW 11 mph
Precip.
14%
Night
75°F
E 2 mph
Precip.
5%
12.09
sat
Day
73°F
N 13 mph
Precip.
52%
Night
77°F
NW 19 mph
Precip.
55%
13.09
sun
Day
79°F
N 11 mph
Precip.
43%
Night
75°F
SE 4 mph
Precip.
29%
14.09
mon
Day
77°F
SW 7 mph
Precip.
24%
Night
77°F
NW 7 mph
Precip.
25%
15.09
tue
Day
77°F
NW 8 mph
Precip.
23%
Night
77°F
N 11 mph
Precip.
19%
16.09
wed
Day
79°F
SE 7 mph
Precip.
23%
Night
77°F
S 11 mph
Precip.
16%
17.09
thu
Day
72°F
SW 11 mph
Precip.
24%
Night
72°F
W 9 mph
Precip.
20%
18.09
fri
Day
72°F
SW 7 mph
Precip.
5%
Night
72°F
NE 6 mph
Precip.
5%
19.09
sat
Day
72°F
N 6 mph
Precip.
11%
Night
72°F
N 13 mph
Precip.
74%
20.09
sun
Day
73°F
NW 9 mph
Precip.
23%
Night
75°F
N 8 mph
Precip.
15%
21.09
mon
Day
77°F
N 14 mph
Precip.
44%
Night
75°F
N 9 mph
Precip.
15%
22.09
tue
Day
77°F
W 6 mph
Precip.
19%
Night
77°F
N 19 mph
Precip.
23%

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 72.6°F. The highest and lowest sea temperatures during the month were 74.8°F and 70.9°F.

Air temperature in Dewey Beach, °F

Precipitation total in Dewey Beach, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Dewey Beach

Sunniest months:
November 18 days
October 16 days
June 15 days
Warmest months:
July 80.7 °F
August 78.4 °F
June 74.9 °F
Warmest sea temp:
July 75.5 °F
August 75.3 °F
September 73.1 °F
Coldest months:
January 40.5 °F
February 42.6 °F
December 45.6 °F
Rainiest months:
August 4 days
February 3 days
March 3 days
Windiest months:
March 13.4 mph
January 13.1 mph
February 12.7 mph

Dewey Beach on a weather map

Current weather
18:46
Dewey Beach
+77°F
N 22 mph
Feels like: +81°F
Precip.: 19%
Places in USA:
Name
°F
Boston
+73°F
Washington
+90°F
Hawaii
+82°F
Las Vegas
+97°F
Los Angeles
+97°F
Miami
+88°F
Maui
+70°F
Myrtle Beach
+82°F
New York
+86°F
San Diego
+81°F
San Francisco
+77°F
Santa Monica
+91°F
Sarasota
+86°F
Houston
+88°F
Chicago
+75°F
all places
24 Hours Forecast
Dewey Beach
Local time: 18:46
September 09, wednesday
2100
75°F
N
24 mph
September 10, thursday
0000
75°F
NE
24 mph
0300
75°F
NE
22 mph
0600
75°F
NE
22 mph
0900
77°F
NE
19 mph
1200
81°F
E
11 mph
1500
81°F
SE
9 mph
1800
79°F
SW
6 mph
Units of measurement: °C / °F