World Resorts USA Dewey Beach Weather

Dewey Beach 7 Days Forecast

16.08
sun
Day
72°F
NW 13 mph
Precip.
63%
Night
73°F
N 15 mph
Precip.
74%
17.08
mon
Day
77°F
SE 2 mph
Precip.
36%
Night
75°F
SE 6 mph
Precip.
11%
18.08
tue
Day
77°F
SE 9 mph
Precip.
6%
Night
73°F
N 6 mph
Precip.
7%
19.08
wed
Day
77°F
NW 11 mph
Precip.
6%
Night
77°F
N 15 mph
Precip.
47%
20.08
thu
Day
81°F
SE 7 mph
Precip.
9%
Night
79°F
SE 6 mph
Precip.
11%
21.08
fri
Day
77°F
W 11 mph
Precip.
11%
Night
75°F
N 8 mph
Precip.
31%
22.08
sat
Day
81°F
N 9 mph
Precip.
26%
Night
73°F
E 15 mph
Precip.
62%

Sea water temperature in August, °F

Show year:
2026
2025
2024

The average sea water temperature in August of 2026 was 77.9°F. The highest and lowest sea temperatures during the month were 81.0°F and 74.5°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 74.9 °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
05:56
Dewey Beach
+75°F
NW 8 mph
Feels like: +77°F
Precip.: 13%
Places in USA:
Name
°F
Boston
+59°F
Washington
+73°F
Hawaii
+79°F
Las Vegas
+81°F
Los Angeles
+72°F
Miami
+84°F
Maui
+73°F
Myrtle Beach
+81°F
New York
+73°F
San Diego
+72°F
San Francisco
+57°F
Santa Monica
+72°F
Sarasota
+81°F
Houston
+77°F
Chicago
+72°F
all places
24 Hours Forecast
Dewey Beach
Local time: 05:56
August 16, sunday
0600
75°F
NW
8 mph
0900
75°F
NW
9 mph
1200
72°F
NW
13 mph
1500
70°F
NW
17 mph
1800
70°F
NW
21 mph
2100
72°F
N
22 mph
August 17, monday
0000
73°F
N
15 mph
0300
73°F
NE
3 mph
Units of measurement: °C / °F