18.03
wed
wed
Day
34°F
W 3 mph
Precip.
0%
0%
Night
36°F
NW 9 mph
Precip.
0%
0%
19.03
thu
thu
Day
45°F
NW 9 mph
Precip.
0%
0%
Night
41°F
N 9 mph
Precip.
0%
0%
20.03
fri
fri
Day
52°F
N 11 mph
Precip.
0%
0%
Night
46°F
N 21 mph
Precip.
0%
0%
21.03
sat
sat
Day
61°F
SE 16 mph
Precip.
0%
0%
Night
46°F
W 8 mph
Precip.
0%
0%
22.03
sun
sun
Day
52°F
N 9 mph
Precip.
0%
0%
Night
50°F
N 15 mph
Precip.
0%
0%
23.03
mon
mon
Day
57°F
E 17 mph
Precip.
100%
100%
Night
39°F
S 22 mph
Precip.
0%
0%
24.03
tue
tue
Day
39°F
SE 19 mph
Precip.
0%
0%
Night
39°F
NW 7 mph
Precip.
0%
0%
sea water
temperature
temperature
| Dewey Beach |
monthly
weather
weather
| Dewey Beach |
current
weather
weather
| Dewey Beach |
14 days
forecast
forecast
| Dewey Beach |
Sea water temperature in March, °F
Show year:
2026
2025
2024
The average sea water temperature in March of 2026 was 39.1°F. The highest and lowest sea temperatures during the month were 42.3°F and 35.6°F.
Sea water temperature in April, °F
Show year:
2025
2024
2023
The average sea water temperature in April of 2025 was 51.2°F. The highest and lowest sea temperatures during the month were 56.3°F and 47.8°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: 17:32
March 18, wednesday
1800
37°F
NW
9 mph
9 mph
2100
36°F
NW
9 mph
9 mph
March 19, thursday
0000
36°F
NW
9 mph
9 mph
0300
36°F
NW
8 mph
8 mph
0600
36°F
NW
7 mph
7 mph
0900
39°F
NW
7 mph
7 mph
1200
45°F
NW
9 mph
9 mph
1500
45°F
NW
12 mph
12 mph
