23.12
tue
tue
Day
43°F
NE 17 mph
Precip.
100%
100%
Night
43°F
E 12 mph
Precip.
0%
0%
24.12
wed
wed
Day
41°F
SE 22 mph
Precip.
0%
0%
Night
39°F
S 10 mph
Precip.
0%
0%
25.12
thu
thu
Day
39°F
NE 16 mph
Precip.
0%
0%
Night
41°F
S 13 mph
Precip.
0%
0%
26.12
fri
fri
Day
43°F
W 16 mph
Precip.
100%
100%
Night
43°F
NW 16 mph
Precip.
100%
100%
27.12
sat
sat
Day
39°F
SW 22 mph
Precip.
72%
72%
Night
41°F
W 10 mph
Precip.
52%
52%
28.12
sun
sun
Day
45°F
N 17 mph
Precip.
100%
100%
Night
39°F
SE 23 mph
Precip.
0%
0%
29.12
mon
mon
Day
32°F
SE 23 mph
Precip.
59%
59%
Night
28°F
SE 23 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 44.9°F. The highest and lowest sea temperatures during the month were 50.5°F and 41.4°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: 18:18
December 23, tuesday
2100
43°F
NE
12 mph
12 mph
December 24, wednesday
0000
43°F
E
12 mph
12 mph
0300
41°F
E
15 mph
15 mph
0600
39°F
SE
20 mph
20 mph
0900
39°F
SE
22 mph
22 mph
1200
41°F
SE
22 mph
22 mph
1500
41°F
SE
20 mph
20 mph
1800
41°F
SE
14 mph
14 mph
