16.08
sun
sun
Day
72°F
NW 13 mph
Precip.
63%
63%
Night
73°F
N 15 mph
Precip.
74%
74%
17.08
mon
mon
Day
77°F
SE 2 mph
Precip.
36%
36%
Night
75°F
SE 6 mph
Precip.
11%
11%
18.08
tue
tue
Day
77°F
SE 9 mph
Precip.
6%
6%
Night
73°F
N 6 mph
Precip.
7%
7%
19.08
wed
wed
Day
77°F
NW 11 mph
Precip.
6%
6%
Night
77°F
N 15 mph
Precip.
47%
47%
20.08
thu
thu
Day
81°F
SE 7 mph
Precip.
9%
9%
Night
79°F
SE 6 mph
Precip.
11%
11%
21.08
fri
fri
Day
77°F
W 11 mph
Precip.
11%
11%
Night
75°F
N 8 mph
Precip.
31%
31%
22.08
sat
sat
Day
81°F
N 9 mph
Precip.
26%
26%
Night
73°F
E 15 mph
Precip.
62%
62%
23.08
sun
sun
Day
81°F
E 5 mph
Precip.
9%
9%
Night
75°F
SE 9 mph
Precip.
12%
12%
24.08
mon
mon
Day
75°F
SE 9 mph
Precip.
6%
6%
Night
73°F
E 6 mph
Precip.
7%
7%
25.08
tue
tue
Day
81°F
E 6 mph
Precip.
4%
4%
Night
75°F
NE 9 mph
Precip.
12%
12%
26.08
wed
wed
Day
79°F
W 3 mph
Precip.
23%
23%
Night
73°F
SW 14 mph
Precip.
23%
23%
27.08
thu
thu
Day
75°F
SW 11 mph
Precip.
16%
16%
Night
72°F
NW 6 mph
Precip.
16%
16%
28.08
fri
fri
Day
75°F
SE 14 mph
Precip.
5%
5%
Night
68°F
S 17 mph
Precip.
3%
3%
29.08
sat
sat
Day
66°F
NW 11 mph
Precip.
2%
2%
Night
70°F
NE 7 mph
Precip.
3%
3%
sea water
temperature
temperature
| Dewey Beach |
monthly
weather
weather
| Dewey Beach |
current
weather
weather
| Dewey Beach |
7 days
forecast
forecast
| Dewey Beach |
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
Dewey Beach on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Dewey Beach
Local time: 05:57
August 16, sunday
0600
75°F
NW
8 mph
8 mph
0900
75°F
NW
9 mph
9 mph
1200
72°F
NW
13 mph
13 mph
1500
70°F
NW
17 mph
17 mph
1800
70°F
NW
21 mph
21 mph
2100
72°F
N
22 mph
22 mph
August 17, monday
0000
73°F
N
15 mph
15 mph
0300
73°F
NE
3 mph
3 mph
