30.12
tue
tue
Day
32°F
E 28 mph
Precip.
0%
0%
Night
30°F
E 18 mph
Precip.
0%
0%
31.12
wed
wed
Day
39°F
E 16 mph
Precip.
0%
0%
Night
34°F
E 15 mph
Precip.
0%
0%
01.01
thu
thu
Day
34°F
SE 20 mph
Precip.
0%
0%
Night
30°F
E 6 mph
Precip.
0%
0%
02.01
fri
fri
Day
34°F
SE 5 mph
Precip.
0%
0%
Night
36°F
E 5 mph
Precip.
0%
0%
03.01
sat
sat
Day
36°F
SW 8 mph
Precip.
0%
0%
Night
37°F
SW 11 mph
Precip.
45%
45%
04.01
sun
sun
Day
36°F
S 14 mph
Precip.
0%
0%
Night
36°F
SW 9 mph
Precip.
0%
0%
05.01
mon
mon
Day
41°F
W 5 mph
Precip.
0%
0%
Night
41°F
N 12 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 December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 44.2°F. The highest and lowest sea temperatures during the month were 50.5°F and 41.2°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 38.4°F. The highest and lowest sea temperatures during the month were 45.1°F and 34.2°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: 15:50
December 30, tuesday
1800
36°F
E
25 mph
25 mph
2100
30°F
E
21 mph
21 mph
December 31, wednesday
0000
30°F
E
18 mph
18 mph
0300
28°F
E
17 mph
17 mph
0600
30°F
NE
14 mph
14 mph
0900
32°F
NE
14 mph
14 mph
1200
39°F
E
16 mph
16 mph
1500
41°F
E
17 mph
17 mph
